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• XNA - Keyboard text input

  - by Sekhat

  Okay, so basically I want to be able to retrieve keyboard text. Like entering text into a text field or something. I'm only writing my game for windows. I've disregarded using Guide.BeginShowKeyboardInput because it breaks the feel of a self contained game, and the fact that the Guide always shows XBOX buttons doesn't seem right to me either. Yes it's the easiest way, but I don't like it. Next I tried using System.Windows.Forms.NativeWindow. I created a class that inherited from it, and passed it the Games window handle, implemented the WndProc function to catch WM_CHAR (or WM_KEYDOWN) though the WndProc got called for other messages, WM_CHAR and WM_KEYDOWN never did. So I had to abandon that idea, and besides, I was also referencing the whole of Windows forms, which meant unnecessary memory footprint bloat. So my last idea was to create a Thread level, low level keyboard hook. This has been the most successful so far. I get WM_KEYDOWN message, (not tried WM_CHAR yet) translate the virtual keycode with Win32 funcation MapVirtualKey to a char. And I get my text! (I'm just printing with Debug.Write at the moment) A couple problems though. It's as if I have caps lock on, and an unresponsive shift key. (Of course it's not however, it's just that there is only one Virtual Key Code per key, so translating it only has one output) and it adds overhead as it attaches itself to the Windows Hook List and isn't as fast as I'd like it to be, but the slowness could be more due to Debug.Write. Has anyone else approached this and solved it, without having to resort to an on screen keyboard? or does anyone have further ideas for me to try? thanks in advance. note: This is cross posted from the XNA Creators Forums, so if I get an answer there I'll post it here and Vice-Versa Question asked by Jimmy Maybe I'm not understanding the question, but why can't you use the XNA Keyboard and KeyboardState classes? My comment: It's because though you can read keystates, you can't get access to typed text as and how it is typed by the user. So let me further clarify. I want to implement being able to read text input from the user as if they are typing into textbox is windows. The keyboard and KeyboardState class get states of all keys, but I'd have to map each key and combination to it's character representation. This falls over when the user doesn't use the same keyboard language as I do especially with symbols (my double quotes is shift + 2, while american keyboards have theirs somewhere near the return key).

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• WPF Beginner - A simple XAML layout not working as expected

  - by OrWhen

  Hi, I've just started learning WPF, and followed a book to make this sample calculator application in XAML. The XAML code is attached below. I don't have any UI specific code in the xaml.cs file. However, I'm seeing a difference between design time and runtime. As you can see in the attached screenshot, the upper left button of the calculator is bigger than the rest. Even more confusingly, the designer when I edit the XAML shows the button correctly. I've tried to determine why is that, and I'm stumped. Can anyone help? I'm using VS2008, targeting framework 3.5, if it's any help. Here's the XAML: <TextBlock Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="4" FontSize="24" Name="Header" VerticalAlignment="Center" HorizontalAlignment="Center">Calculator</TextBlock> <TextBox Grid.ColumnSpan="4" Grid.Column="0" Grid.Row="1" Name="Display" HorizontalContentAlignment="Left" Margin="5" /> <Button Grid.Row="2" Grid.Column="0" Click="Button_Click">7</Button> <Button Grid.Row="2" Grid.Column="1" Click="Button_Click">8</Button> <Button Grid.Row="2" Grid.Column="2" Click="Button_Click">9</Button> <Button Grid.Row="3" Grid.Column="0" Click="Button_Click">4</Button> <Button Grid.Row="3" Grid.Column="1" Click="Button_Click">5</Button> <Button Grid.Column="2" Grid.Row="3" Click="Button_Click">6</Button> <Button Grid.Row="4" Grid.Column="0" Click="Button_Click">1</Button> <Button Grid.Row="4" Grid.Column="1" Click="Button_Click">2</Button> <Button Grid.Row="4" Grid.Column="2" Click="Button_Click">3</Button> <Button Grid.Row="5" Grid.Column="0" Click="Button_Click">0</Button> <Button Grid.Row="5" Grid.Column="3" Tag="{x:Static local:Operation.PLUS}" Click="Op_Click">+</Button> <Button Grid.Row="4" Grid.Column="3" Tag="{x:Static local:Operation.MINUS}" Click="Op_Click">-</Button> <Button Grid.Row="3" Grid.Column="3" Tag="{x:Static local:Operation.TIMES}" Click="Op_Click">*</Button> <Button Grid.Row="2" Grid.Column="3" Tag="{x:Static local:Operation.DIVIDE}" Click="Op_Click">/</Button> <Button Grid.Row="5" Grid.Column="1" >.</Button> <Button Grid.Row="5" Grid.Column="2" Tag="{x:Static local:Operation.EQUALS}" Click="Op_Click">=</Button> </Grid>

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• jQueryMobile: how to work with slider events?

  - by balexandre

  I'm testing the slider events in jQueryMobile and I must been missing something. page code is: <div data-role="fieldcontain"> <label for="slider">Input slider:</label> <input type="range" name="slider" id="slider" value="0" min="0" max="100" /> </div> and if I do: $("#slider").data("events"); I get blur, focus, keyup, remove What I want to do is to get the value once user release the slider handle and having a hook to the keyup event as $("#slider").bind("keyup", function() { alert('here'); } ); does absolutely nothing :( I must say that I wrongly assumed that jQueryMobile used jQueryUI controls as it was my first thought, but now working deep in the events I can see this is not the case, only in terms of CSS Design. What can I do? jQuery Mobile Slider source code can be found on Git if it helps anyone as well a test page can be found at JSBin As I understand, the #slider is the textbox with the value, so I would need to hook into the slider handle as the generated code for this slider is: <div data-role="fieldcontain" class="ui-field-contain ui-body ui-br"> <label for="slider" class="ui-input-text ui-slider" id="slider-label">Input slider:</label> <input data-type="range" max="100" min="0" value="0" id="slider" name="slider" class="ui-input-text ui-body-null ui-corner-all ui-shadow-inset ui-body-c ui-slider-input" /> <div role="application" class="ui-slider ui-btn-down-c ui-btn-corner-all"> <a class="ui-slider-handle ui-btn ui-btn-corner-all ui-shadow ui-btn-up-c" href="#" data-theme="c" role="slider" aria-valuemin="0" aria-valuemax="100" aria-valuenow="54" aria-valuetext="54" title="54" aria-labelledby="slider-label" style="left: 54%;"> <span class="ui-btn-inner ui-btn-corner-all"> <span class="ui-btn-text"></span> </span> </a> </div> </div> and checking the events in the handler anchor I get only the click event $("#slider").next().find("a").data("events");

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• How to check if a checkbox in a checkbox array is checked with jquery

  - by eddy

  Hello everyone. I have a html table with a column of text boxes (mileage), all of them are disabled when the page loads, and I need that when user clicks on a check box, the text box for that column should be enabled and become a required field, and then if the user unchecks the checkbox, the textbox on that row must be disabled and the required class removed. I already have the function to enable and disable the text boxes (column mileage) when the user clicks on the corresponding checkbox, but it is written in javascript.However, for some reason it only works in IE). Here is the html code <tbody> <c:forEach items="${list}" var="item"> <tr> <td align="center"> <input type="checkbox" name="selectItems" value="<c:out value="${item.numberPlate}"/>" onchange="enableTextField(this)" /> </td> <td align="left"><c:out value="${item.numberPlate}"/></td> <td align="left"><c:out value="${item.driver.fullName}"/></td> <td align="left"><input type="text" name="mileage_<c:out value="${item.numberPlate}"/>" value="" disabled="true"/></td> </tr> </c:forEach> </tbody> And the javascript code: function enableTextField(r) { var node = r.parentNode; while( node && node.tagName !== 'TR' ) { node = node.parentNode; } var i=node.rowIndex; if(document.form1.selectItems[i-1].checked) { document.getElementById('mileage_' + document.form1.selectItems[i-1].value).disabled=false; } else { document.getElementById('mileage_' + document.form1.selectItems[i-1].value).value=""; document.getElementById('mileage_' + document.form1.selectItems[i-1].value).disabled=true; } } Now, I know that in order to add or remove dynamically validation rules I have to use: addClass('required'); o removeClass('required') ,but I don't know how to detect whether a check box is selected or not, and based on that ,enable or disable the text box for that row. I really hope you can help me out with this.

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• Conflict between Jquery Validate and Asp.net MVC

  - by chobo2

  Hi I am using asp.net mvc 2.0 and jquery validate 1.7 (http://bassistance.de/jquery-plugins/jquery-plugin-validation/) What happens is this. A user can click on a link to edit a product. When a user clicks on which product they want to edit a jquery dialog box appears with a form of textboxes and dropdown lists. These html controls have information filled in them. Say if the user chooses to edit the Ipad product a dialog will appear and one of the form textboxes will have "Ipad" in it. Now this form gets rendered on the server side(the form is in a partial view). When loading the dialog box a ajax request is made to get that partial view and in the response part of the ajax call I do something like $('#EditDialog).html(ajaxresponse).dialog({...}); So I would have something like this rendered in my dialog box <form id="EditProduct"> Product Name: <input type="text" value="IPad" name="ProductName" /> </form> Now my jquery validate would be something like this. $("#EditProduct").validate( { errorContainer: "#Errorbox", errorLabelContainer: "#Errorbox ul", wrapper: "li", rules: { ProductName: "required" } }); So I know this works because I use the same validate for add product and if you try to leave ProductName blank it will show a validation error. Now it does not work with the edit one though and I think I know the reason why but not how to fix it. The value for the textbox is "IPad" this is how the Html.TextBoxFor() renders it. However if a user goes and changes the product name to "Iphone" or blank the value never changes. It is always "Ipad" in the html. So I think when the validate goes and looks it goes oh there is a value already in it. It is valid even though in reality it might be blank. When I post to the server through ajax it gets the right value and the server side validation stops it but my entire clientside validation is rendered useless because of this problem as it will never change the html.

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• Retrieving Encrypted Rich Text file and showing it in a RichTextBox C#

  - by Ranhiru

  OK, my need here is to save whatever typed in the rich text box to a file, encrypted, and also retrieve the text from the file again and show it back on the rich textbox. Here is my save code. private void cmdSave_Click(object sender, EventArgs e) { FileStream fs = new FileStream(filePath, FileMode.Create, FileAccess.Write); AesCryptoServiceProvider aes = new AesCryptoServiceProvider(); aes.GenerateIV(); aes.GenerateKey(); aes.Mode = CipherMode.CBC; TextWriter twKey = new StreamWriter("key"); twKey.Write(ASCIIEncoding.ASCII.GetString(aes.Key)); twKey.Close(); TextWriter twIV = new StreamWriter("IV"); twIV.Write(ASCIIEncoding.ASCII.GetString(aes.IV)); twIV.Close(); ICryptoTransform aesEncrypt = aes.CreateEncryptor(); CryptoStream cryptoStream = new CryptoStream(fs, aesEncrypt, CryptoStreamMode.Write); richTextBox1.SaveFile(cryptoStream, RichTextBoxStreamType.RichText); } I know the security consequences of saving the key and iv in a file but this just for testing :) Well, the saving part works fine which means no exceptions... The file is created in filePath and the key and IV files are created fine too... OK now for retrieving part where I am stuck :S private void cmdOpen_Click(object sender, EventArgs e) { OpenFileDialog openFile = new OpenFileDialog(); openFile.ShowDialog(); FileStream openRTF = new FileStream(openFile.FileName, FileMode.Open, FileAccess.Read); AesCryptoServiceProvider aes = new AesCryptoServiceProvider(); TextReader trKey = new StreamReader("key"); byte[] AesKey = ASCIIEncoding.ASCII.GetBytes(trKey.ReadLine()); TextReader trIV = new StreamReader("IV"); byte[] AesIV = ASCIIEncoding.ASCII.GetBytes(trIV.ReadLine()); aes.Key = AesKey; aes.IV = AesIV; ICryptoTransform aesDecrypt = aes.CreateDecryptor(); CryptoStream cryptoStream = new CryptoStream(openRTF, aesDecrypt, CryptoStreamMode.Read); StreamReader fx = new StreamReader(cryptoStream); richTextBox1.Rtf = fx.ReadToEnd(); //richTextBox1.LoadFile(fx.BaseStream, RichTextBoxStreamType.RichText); } But the richTextBox1.Rtf = fx.ReadToEnd(); throws an cryptographic exception "Padding is invalid and cannot be removed." while richTextBox1.LoadFile(fx.BaseStream, RichTextBoxStreamType.RichText); throws an NotSupportedException "Stream does not support seeking." Any suggestions on what i can do to load the data from the encrypted file and show it in the rich text box?

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• How to honor/inherit user's language settings in WinForm app

  - by msorens

  I have worked with globalization settings in the past but not within the .NET environment, which is the topic of this question. What I am seeing is most certainly due to knowledge I have yet to learn so I would appreciate illumination on the following. Setup: My default language setting is English (en-us specifically). I added a second language (Danish) on my development system (WinXP) and then opened the language bar so I could select either at will. I selected Danish on the language bar then opened Notepad and found the language reverted to English on the language bar. I understand that the language setting is per application, so it seemed that Notepad set the default back to English. (I found that strange since Windows and thus Notepad is used all over the world.) Closing Notepad returned the setting on the language bar to Danish. I then launched my open custom WinForm application--which I know does not set the language--and it also reverted from English to Danish when opened, then back to Danish when terminated! Question #1A: How do I get my WinForm application upon launch to inherit the current setting of the language bar? My experiment seems to indicate that each application starts with the system default and requires the user to manually change it once the app is running--this would seem to be a major inconvenience for anyone that wants to work with more than one language! Question #1B: If one must, in fact, set the language manually in a multi-language scenario, how do I change my default system language (e.g. to Danish) so I can test my app's launch in another language? I added a display of the current language in my application for this next experiment. Specifically I set a MouseEnter handler on a label that set its tooltip to CultureInfo.CurrentCulture.Name so each time I mouse over I thought I should see the current language setting. Since setting the language before I launch my app did not work, I launched it then set the language to Danish. I found that some things (like typing in a TextBox) did honor this Danish setting. But mousing over the instrumented label still showed en-us! Question #2A: Why does CultureInfo.CurrentCulture.Name not reflect the change from my language bar while other parts of my app seem to recognize the change? (Trying CultureInfo.CurrentUICulture.Name produced the same result.) Question #2B: Is there an event that fires upon changes on the language bar so I could recognize within my app when the language setting changes?

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• Prism Commands - binding error when binding to list element ?

  - by Maciek

  I've got a ItemsControl (to be replaced by listbox) which has it's ItemsSource bound to an ObservableCollection<User> which is located in the view model. The View Model contains some DelegateCommand<T> delegates for handling commands (for instance UpdateUserCommand and RemoveUserCommand). All works fine if the buttons linked to those commands are placed outside of the DataTemplate of the control which is presenting the items. <ItemsControl ItemsSource="{Binding Users, Mode=TwoWay}" HorizontalContentAlignment="Stretch"> <ItemsControl.ItemTemplate> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="0.2*"/> <ColumnDefinition Width="0.2*"/> <ColumnDefinition Width="0.2*"/> <ColumnDefinition Width="0.2*"/> <ColumnDefinition Width="0.2*"/> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Text="{Binding UserName}"/> <PasswordBox Grid.Column="1" Password="{Binding UserPass}"/> <TextBox Grid.Column="2" Text="{Binding UserTypeId}"/> <Button Grid.Column="3" Content="Update" cal:Click.Command="{Binding UpdateUserCommand}" cal:Click.CommandParameter="{Binding}"/> <Button Grid.Column="4" Content="Remove" cal:Click.Command="{Binding RemoveUserCommand}" cal:Click.CommandParameter="{Binding}"/> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> What I'm trying to achieve, is : Have each row - generated by the ListView/ItemsControl - contain buttons to manage the item represented that particular row. During the runtime, the VS's output panel generated the following messages for each listbox element System.Windows.Data Error: BindingExpression path error: 'UpdateUserCommand' property not found on 'ModuleAdmin.Services.User' 'ModuleAdmin.Services.User' (HashCode=35912612). BindingExpression: Path='UpdateUserCommand' DataItem='ModuleAdmin.Services.User' (HashCode=35912612); target element is 'System.Windows.Controls.Button' (Name=''); target property is 'Command' (type 'System.Windows.Input.ICommand').. System.Windows.Data Error: BindingExpression path error: 'RemoveUserCommand' property not found on 'ModuleAdmin.Services.User' 'ModuleAdmin.Services.User' (HashCode=35912612). BindingExpression: Path='RemoveUserCommand' DataItem='ModuleAdmin.Services.User' (HashCode=35912612); target element is 'System.Windows.Controls.Button' (Name=''); target property is 'Command' (type 'System.Windows.Input.ICommand').. Which would imply that there are binding errors present. Is there any way to make this right? or is this not the way?

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• Android App to call a number on button click

  - by FosterZ

  hey guys this is my 1st android app(learning), so i want to call a number given in the textbox but i'm getting error as "The application 'xyz'(process com.adroid) has stoped unexpectedly".. following the code i have done so far... where m doing wrong ?? EditText txtPhn; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button callButton = (Button)findViewById(R.id.btnCall); txtPhn = (EditText)findViewById(R.id.txtPhnNumber); callButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { try { Intent callIntent = new Intent(Intent.ACTION_CALL); callIntent.setData(Uri.parse("tel:"+txtPhn.getText().toString())); startActivity(callIntent); } catch (ActivityNotFoundException activityException) { Log.e("Calling a Phone Number", "Call failed", activityException); } } }); } EDITED LogCat 03-09 11:23:25.874: ERROR/AndroidRuntime(370): FATAL EXCEPTION: main 03-09 11:23:25.874: ERROR/AndroidRuntime(370): java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.CALL dat=tel:xxx-xxx-xxxx flg=0x10000000 cmp=com.android.phone/.OutgoingCallBroadcaster } from ProcessRecord{40738d70 370:org.krish.android/10034} (pid=370, uid=10034) requires android.permission.CALL_PHONE 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Parcel.readException(Parcel.java:1322) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Parcel.readException(Parcel.java:1276) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1351) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1374) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.Activity.startActivityForResult(Activity.java:2827) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.Activity.startActivity(Activity.java:2933) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at org.krish.android.caller$1.onClick(caller.java:29) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.view.View.performClick(View.java:2485) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.view.View$PerformClick.run(View.java:9080) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Handler.handleCallback(Handler.java:587) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Handler.dispatchMessage(Handler.java:92) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Looper.loop(Looper.java:123) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.ActivityThread.main(ActivityThread.java:3683) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at java.lang.reflect.Method.invokeNative(Native Method) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at java.lang.reflect.Method.invoke(Method.java:507) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at dalvik.system.NativeStart.main(Native Method)

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• How to detect if Asp.Net form is valid

  - by Hasan Gürsoy

  Hi, I have a form which is in an updatePanel and I have a span with hidden loading image, which I want to show when user clicks to submit button but I first need to check if page is valid on client side. Also I'm making loading span visible with jQuery. Here is my code: <html> <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script> <script type="text/javascript"> function showLoading() { $('#loader').show(); } </script> </head> <body> <asp:ScriptManager ID="smMain" runat="server"></asp:ScriptManager> <asp:UpdatePanel ID="upForm" runat="server"> <ContentTemplate> <asp:MultiView ID="mvContact" runat="server" ActiveViewIndex="0"> <asp:View ID="vDefault" runat="server"> <asp:TextBox ID="tEMail" runat="server" CssClass="input" /> <asp:RequiredFieldValidator ID="rfvEMail" runat="server" ControlToValidate="tEMail" ErrorMessage="* required" Display="Dynamic" /> <asp:RegularExpressionValidator ID="revEMail" runat="server" ControlToValidate="tEMail" ErrorMessage="* invalid" Display="Dynamic" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" /> <asp:ImageButton ID="btnSubmit" runat="server" ImageUrl="~/Assets/Images/btnSubmit.png" ToolTip="Submit Form" style="margin:5px 5px 0 -5px" onclick="btnSubmit_Click" OnClientClick="showLoading();" /> <span id="loader"><img src="Assets/Images/loader.gif" title="Sending..." /></span> </asp:View> <asp:View ID="vResult" runat="server"> <div class="result"> <span id="lResult" runat="server">Your message is sent</span> </div> </asp:View> </asp:MultiView> </ContentTemplate> </asp:UpdatePanel> </body></html>

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• How to bind a WPF CustomControl to a ListBox

  - by VivyG

  I've just started to learn WPF this week so please accept my apologies if I am being stupid or missing fundamental points! Iam trying to build a very simple Contact browser. I have a Collection of Contact objects that displayed in a ListBox control which shows the FullName of the Contact and to the right I have a customControl called BasicContactCard. This is the XAML for the ContacWindow that displays the ListBox: <DockPanel Width="auto" Height="auto" Margin="8 8 8 8"> <Border Height="56" HorizontalAlignment="Stretch" VerticalAlignment="Top" BorderThickness="1" CornerRadius="8" DockPanel.Dock="Top" Background="Beige"> <TextBox Height="32" Margin="23,5,135,5" Text="Search for contact here" FontStyle="Italic" Foreground="#FFAD9595" FontSize="14" BorderBrush="LightGray"/> </Border> <ListBox x:Name="contactList" DockPanel.Dock="Left" Width="192" Height="auto" Margin="5 4 0 8" /> <Grid> <Grid.RowDefinitions> <RowDefinition Height="1*" /> <RowDefinition Height="0.125*" /> </Grid.RowDefinitions> <local:BasicContactCard Margin="8 8 8 8" /> <Button Grid.Row="1" x:Name="exit" Content="Exit" HorizontalAlignment="Right" Width="50" Height="25" Click="exit_Click" /> </Grid> </DockPanel> and this is the XAML for the CustomControl: <DockPanel Width="auto " Height="auto" Margin="8,8,8,8"> <Grid Width="auto" Height="auto" DockPanel.Dock="Top"> <Grid.RowDefinitions> <RowDefinition Height="1*" /> <RowDefinition Height="1*" /> <RowDefinition Height="1*" /> <RowDefinition Height="1*" /> </Grid.RowDefinitions> <TextBlock x:Name="companyField" Grid.Row="0" Width="auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="8,8,8,8" Text="Company"/> <TextBlock x:Name="contactField" Grid.Row="1" Width="auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="8,8,8,8" Text="Contact"/> <TextBlock x:Name="phoneField" Grid.Row="2" Width="auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="8,8,8,8" Text="Phone"/> <TextBlock x:Name="emailField" Grid.Row="3" Width="auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="8,8,8,8" Text="email"/> </Grid> </DockPanel> The problem I have is how do I bind the individual elements of the CustomControl to the object behind the SelectedItem in the ListBox?

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• ASP.NET FormView: "Object of type 'System.Int32' cannot be converted to type 'System.String"

  - by Vinzcent

  Hey I have a problem with my FromView. I would like to show some data from a Database Table in my FormView. But some data is from the tupe Int32, while this data should be in a TextBox, a string. How do you convert these Int32's. FormView and my ObjectDataSource <asp:FormView ID="fvDetailOrder" runat="server"> <ItemTemplate> Aantal:<br /> <asp:Label CssClass="txtBox" ID="Label15" runat="server" Text='<%# Eval("COUNT") %>' /><br /> Prijs:<br /> <asp:Label CssClass="txtBox" ID="Label16" runat="server" Text='<%# Eval("PRICE") %>' /><br /> Korting:<br /> <asp:Label CssClass="txtBox" ID="Label17" runat="server" Text='' /><br /> Totaal:<br /> <asp:Label CssClass="txtBox" ID="Label18" runat="server" Text='<%# Eval("AMOUNT") %>' /><br /> Betaald:<br /> <asp:Label CssClass="txtBox" ID="Label19" runat="server" Text='<%# Eval("PAID") %>' /><br /> Datum betaling:<br /> <asp:Label CssClass="txtBox" ID="Label20" runat="server" Text='<%# Eval("PDATE") %>' /><br /> </ItemTemplate> </asp:FormView> <asp:ObjectDataSource ID="objdsOrderID" runat="server" OnSelecting="objdsOrderID_Selecting" SelectMethod="getOrdersByID" TypeName="DAL.OrdersDAL"> <SelectParameters> <asp:Parameter Name="id" Type="Int32" /> </SelectParameters> </asp:ObjectDataSource> My Code behind protected void gvOrdersAdmin_SelectedIndexChanged(object sender, EventArgs e) { fvDetailOrder.DataSource = objdsOrderID; fvDetailOrder.DataBind(); // <-- HERE I GET THE ERROR } protected void objdsOrderID_Selecting(object sender, ObjectDataSourceSelectingEventArgs e) { e.InputParameters["id"] = gvOrdersAdmin.DataKeys[gvOrdersAdmin.SelectedRow.RowIndex].Values[0]; ; } My Data Acces Layer public static DataTable getOrdersByID(string id) { string sql = "SELECT 'AUTHOR' = tblAuthors.FIRSTNAME + ' ' + tblAuthors.LASTNAME, tblBooks.*, tblGenres.*, tblLanguages.*, tblOrders.* FROM tblAuthors INNER JOIN tblBooks ON tblAuthors.AUTHOR_ID = tblBooks.AUTHOR_ID INNER JOIN tblGenres ON tblBooks.GENRE_ID = tblGenres.GENRE_ID INNER JOIN tblLanguages ON tblBooks.LANG_ID = tblLanguages.LANG_ID INNER JOIN tblOrders ON tblBooks.BOOK_ID = tblOrders.BOOK_ID" + " WHERE tblOrders.ID = @id;"; SqlDataAdapter da = new SqlDataAdapter(sql, GetConnectionString()); da.SelectCommand.Parameters["id"].Value = id; DataSet ds = new DataSet(); da.Fill(ds, "Orders"); return ds.Tables["Orders"]; } Thanks a lot, Vincent

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• capture data from FORM using jquery/ajax/json

  - by nisardotnet

  i have few textbox on the form and when the user submit i want to capture the data and insert into db here is what my code looks like beforeSubmit: function(data) { // called just before the form is submitted var item = $("[id$='item']"); var category = $("[id$='category']"); var record = $("[id$='record']"); var json = "{'ItemName':'" + escape(item.val()) + "','CategoryID':'" + category.val() + "','RecordID':'" + record.val() + "'}"; var ajaxPage = "DataProcessor.aspx?Save=1"; //this page is where data is to be retrieved and processed var options = { type: "POST", url: ajaxPage, data: json, contentType: "application/json;charset=utf-8", dataType: "json", async: false, success: function(response) { alert("success: " + response); }, error: function(msg) { alert("failed: " + msg); } }; //execute the ajax call and get a response var returnText = $.ajax(options).responseText; if (returnText == 1) { record.html(returnText); $("#divMsg").html("<font color=blue>Record saved successfully.</font>"); } else { record.html(returnText); $("#divMsg").html("<font color=red>Record not saved successfully.</font>"); } // $("#data").html("<font color=blue>Data sent to the server :</font> <br />" + $.param(data)); }, here is what is the Data sent to the server: if i uncomment this line: // $("#data").html("Data sent to the server : " + $.param(data)); _VIEWSTATE=%2FwEPDwULLTE4ODM1ODM4NDFkZOFEQfA7cHuTisEwOQmIaj1nYR23&_EVENTVALIDATION=%2FwEWDwLuksaHBgLniKOABAKV8o75BgLlosbxAgKUjpHvCALf9YLVCgLCtfnhAQKyqcC9BQL357nNAQLW9%2FeuDQKvpuq2CALyveCRDwKgoPWXDAKhwImNCwKiwImNC1%2Fq%2BmUXqcSuJ0z0F%2FQXKM3pH070&firstname=Nisar&surname=Khan&day_fi=12&month_fi=12&year_fi=1234&lastFour_fi=777&countryPrefix_fi=1&areaCode_fi=555-555&phoneNumber_fi=5555&email_fi=nisardotnet%40gmail.com&username=nisarkhan&password=123456&retypePassword=123456 DataProcessor.aspx.cs: public partial class DataProcessor : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) ProcessAjaxRequest(); } private void ProcessAjaxRequest() { if (Request.ContentType.Contains("json") && Request.QueryString["Save"] != null) SaveMyData(); } private void SaveMyData() { //data passed in as JSON format System.IO.StreamReader sr = new System.IO.StreamReader(Request.InputStream); string line = ""; line = sr.ReadToEnd(); //This is all you need to parse JSON string into an JObject. //Require namespace Newtonsoft.Json.Linq; JObject jo = JObject.Parse(line); Console.WriteLine((string)jo["RecordID"]); Console.WriteLine(Server.UrlDecode((string)jo["ItemName"])); //use Server.UrlDecode to reverse the text that was escaped before it was passed in to its original state Response.Write((string)jo["CategoryID"]); //this send to responseText of .ajax(options).responseText } } the above code is not working and i need a way to capture the values before i insert into db. any help? Thanks.

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• WPF - How do I get an object that is bound to a ListBoxItem back

  - by JonBlumfeld

  Hi there here is what I would like to do. I get a List of objects from a database and bind this list to a ListBox Control. The ListBoxItems consist of a textbox and a button. Here is what I came up with. Up to this point it works as intended. The object has a number of Properties like ID, Name. If I click on the button in the ListBoxItem the Item should be erased from the ListBox and also from the database... <ListBox x:Name="taglistBox"> <ListBox.ItemContainerStyle> <Style TargetType="{x:Type ListBoxItem}"> <Setter Property="HorizontalAlignment" Value="Stretch"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="ListBoxItem"> <ContentPresenter HorizontalAlignment="Stretch"/> </ControlTemplate> </Setter.Value> </Setter> <Setter Property="Tag" Value="{Binding TagSelf}"></Setter> </Style> </ListBox.ItemContainerStyle> <ListBox.ItemTemplate> <DataTemplate> <Grid HorizontalAlignment="Stretch"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Button Grid.Column="0" Name="btTag" VerticalAlignment="Center" Click="btTag_Click" HorizontalAlignment="Left"> <Image Width="16" Height="16" Source="/WpfApplication1;component/Resources/104.png"/> </Button> <TextBlock Name="tbtagBoxTagItem" Margin="5" Grid.Column="1" Text="{Binding Name}" VerticalAlignment="Center" /> </Grid> </DataTemplate> </ListBox.ItemTemplate> </ListBox> The Textblock.Text is bound to object.Name and the ListBoxItem.Tag to object.TagSelf (which is just a copy of the object itself). Now my questions If I click the button in the listboxItem how do I get the listboxitem and the object bound to it back. In order to delete the object from the database I have to retrieve it somehow. I tried something like ListBoxItem lbi1 = (ListBoxItem)(taglistBox.ItemContainerGenerator.ContainerFromItem(taglistBox.Items.CurrentItem)); ObjectInQuestion t = (ObjectInQuestion) lbi1.Tag; Is there a way to automatically update the contents of the ListBox if the Itemssource changes? Right now I'm achieving that by taglistBox.ItemsSource = null; taglistBox.ItemsSource = ObjectInQuestion; I'd appreciate any help you can give :D Thanks in advance

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• WPF Open Combobox popup on Focus or GotFocus

  - by ashish.magroria

  Hi, I am trying to open the combobox popup when it is focused using Style/Event Trigger I used the following code in my Combobox control Template: <ControlTemplate x:Key="ComboBoxTemplate" TargetType="{x:Type ComboBox}"> <Grid > <ToggleButton Grid.Column="2" Template="{DynamicResource ComboBoxToggleButton}" x:Name="ToggleButton" Focusable="false" IsChecked="{Binding Path=IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" ClickMode="Press"/> <ContentPresenter HorizontalAlignment="Left" Margin="3,3,23,3" x:Name="ContentSite" VerticalAlignment="Center" Content="{TemplateBinding SelectionBoxItem}" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" IsHitTestVisible="False"/> <TextBox Visibility="Hidden" Template="{DynamicResource ComboBoxTextBox}" HorizontalAlignment="Left" Margin="3,3,23,3" x:Name="PART_EditableTextBox" Style="{x:Null}" VerticalAlignment="Center" Focusable="True" Background="Transparent" IsReadOnly="{TemplateBinding IsReadOnly}"/> <Popup IsOpen="{TemplateBinding IsDropDownOpen}" Placement="Bottom" x:Name="Popup" Focusable="False" AllowsTransparency="True" PopupAnimation="Slide"> <Grid MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{TemplateBinding ActualWidth}" x:Name="DropDown" SnapsToDevicePixels="True"> <Border x:Name="DropDownBorder" Background="{DynamicResource ShadeBrush}" BorderBrush="{DynamicResource SolidBorderBrush}" BorderThickness="1"/> <ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" CanContentScroll="True"> <StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained"/> </ScrollViewer> </Grid> </Popup> </Grid> <ControlTemplate.Triggers> **<Trigger Property="IsMouseOver" Value="True"> <Setter Property="IsOpen" Value="True" TargetName="Popup"/> </Trigger>** </ControlTemplate.Triggers> </ControlTemplate> But nothing happens with this code. So I trid the following Event trigger in ControlTemplate.Triggers <EventTrigger RoutedEvent="UIElement.GotFocus"> <BeginStoryboard> <Storyboard > <BooleanAnimationUsingKeyFrames Storyboard.TargetName="Popup" Storyboard.TargetProperty="IsOpen" FillBehavior="HoldEnd"> <DiscreteBooleanKeyFrame KeyTime="00:00:00" Value="True" /> </BooleanAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger> <EventTrigger RoutedEvent="UIElement.LostFocus"> <BeginStoryboard> <Storyboard > <BooleanAnimationUsingKeyFrames Storyboard.TargetName="Popup" Storyboard.TargetProperty="IsOpen" FillBehavior="HoldEnd"> <DiscreteBooleanKeyFrame KeyTime="00:00:00" Value="False" /> </BooleanAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger> Now this helps open the popup on focus, but when I select any item from dropdown the pop up doesnt disappear as usual; it stays open. it closes only after I click somewhere else in the window. Can someone please suggest the proper way to do this Thanks in advance

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• Design-time failure: WPF, Usercontrols and Namespaces

  - by Simon Woods

  Hi I have a very simple WPF project comprising a Window and Usercontrol. I'm very much in a learning phase. It works fine when I run it. However, I am unable to see the form in design time. The problem, I believe is something to do with namespaces, but I don't understand where. It may well be a simple error Main Window XML <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:views="clr-namespace:UserLogin" x:Class="UserLogin.MainView" x:Name="MainViewWindow" mc:Ignorable="d" Title="Login" Height="141" Width="347" > <Grid> <views:LoginView /> </Grid> </Window> Main Window CodeBehind Imports Microsoft.VisualBasic Imports System Imports System.Windows Imports UserLogin Namespace UserLogin Partial Public Class MainView Inherits System.Windows.Window Public Sub New() InitializeComponent() End Sub End Class End Namespace Usercontrol XAML <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" x:Class="UserLogin.LoginView" x:Name="LoginViewControl" mc:Ignorable="d" d:DesignHeight="96" d:DesignWidth="298"> <Grid Height="96" Width="298"> <Button Command="{Binding OKCommand}" Height="21" Margin="0,0,90,16" Name="btnOK" VerticalAlignment="Bottom" HorizontalAlignment="Right" Width="76">OK</Button> <Button Command="{Binding CancelCommand}" Height="21" HorizontalAlignment="Right" Margin="0,0,9,16" Name="btnCancel" VerticalAlignment="Bottom" Width="75">Cancel</Button> <Label Height="23" HorizontalAlignment="Left" Margin="10,5,0,0" Name="Label1" VerticalAlignment="Top" Width="85">Name:</Label> <Label HorizontalAlignment="Left" Margin="10,32,0,0" Name="Label2" Width="85" Height="29" VerticalAlignment="Top">Password:</Label> <TextBox Margin="0,31,6,0" Name="txtPassword" Height="22" VerticalAlignment="Top" HorizontalAlignment="Right" Width="182" /> <ComboBox Height="22" Margin="110,6,6,0" Name="cboNames" VerticalAlignment="Top" /> </Grid> </UserControl> Usercontrol CodeBehind Imports Microsoft.VisualBasic Imports System Imports UserLogin Namespace UserLogin Partial Public Class LoginView Inherits System.Windows.Controls.UserControl Public Sub New() InitializeComponent() End Sub End Class End Namespace I think I'm missing something this namespace xmlns:views="clr-namespace:UserLogin" since intellisense doesn't give me the usercontrol declared within it in the XAML designer but rather reports the error "Unable to load the metadata for the assembly ... etc etc" Thx for any suggestions Simon

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• Lucene: Wildcards are missing from index

  - by Eleasar

  Hi - i am building a search index that contains special names - containing ! and ? and & and + and ... I have to tread the following searches different: me & you me + you But whatever i do (did try with queryparser escaping before indexing, escaped it manually, tried different indexers...) - if i check the search index with Luke they do not show up (question marks and @-symbols and the like show up) The logic behind is that i am doing partial searches for a live suggestion (and the fields are not that large) so i split it up into "m" and "me" and "+" and "y" and "yo" and "you" and then index it (that way it is way faster than a wildcard query search (and the index size is not a big problem). So what i would need is to also have this special wildcard characters be inserted into the index. This is my code: using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using Lucene.Net.Analysis; using Lucene.Net.Util; namespace AnalyzerSpike { public class CustomAnalyzer : Analyzer { public override TokenStream TokenStream(string fieldName, TextReader reader) { return new ASCIIFoldingFilter(new LowerCaseFilter(new CustomCharTokenizer(reader))); } } public class CustomCharTokenizer : CharTokenizer { public CustomCharTokenizer(TextReader input) : base(input) { } public CustomCharTokenizer(AttributeSource source, TextReader input) : base(source, input) { } public CustomCharTokenizer(AttributeFactory factory, TextReader input) : base(factory, input) { } protected override bool IsTokenChar(char c) { return c != ' '; } } } The code to create the index: private void InitIndex(string path, Analyzer analyzer) { var writer = new IndexWriter(path, analyzer, true); //some multiline textbox that contains one item per line: var all = new List<string>(txtAllAvailable.Text.Replace("\r","").Split('\n')); foreach (var item in all) { writer.AddDocument(GetDocument(item)); } writer.Optimize(); writer.Close(); } private static Document GetDocument(string name) { var doc = new Document(); doc.Add(new Field( "name", DeNormalizeName(name), Field.Store.YES, Field.Index.ANALYZED)); doc.Add(new Field( "raw_name", name, Field.Store.YES, Field.Index.NOT_ANALYZED)); return doc; } (Code is with Lucene.net in version 1.9.x (EDIT: sorry - was 2.9.x) but is compatible with Lucene from Java) Thx

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• understanding logic of dijit css and styles

  - by Tom

  Hi, I am trying to use dijit.InlineEditBox. I have put the following code in my HTML, using the example in the dojo docs: <script type="text/javascript"> dojo.require("dijit.InlineEditBox"); dojo.require("dojo.parser"); dojo.require("dijit.form.TextBox"); function editableHeaderOnChange(id, arg){ alert("details changed with id " + id + " and arguments "+arg); } </script> ... <span id="myText" dojoType="dijit.InlineEditBox" onChange="editableHeaderOnChange(this.id,arguments[0])" autoSave="true" title="My Text">click to edit me</span> I am using tundra theme. It works, however it doesn't look so good. The widget has its own style, which doesn't fit my CSS. I used firebug to locate the source of the problem. The widget creates many nested div/span elements, each has it's own style (element style in firebug): <span id="dijit__InlineEditor_0" class="dijitReset dijitInline" style="margin: 0px; position: absolute; visibility: hidden; display: block; opacity: 0;" ...> <input type="text" autocomplete="off" class="dijit dijitReset dijitLeft dijitTextBox" id="dijit_form_TextBox_0" style="line-height: 20px; font-weight: 400; font-family: Trebuchet MS,Helvetica,Arial,Verdana; font-size: 14.5167px; font-style: normal; width: 100%;"> ...> </span></span> (showing only the relevant parts...) to get the visual that I want, which will not break to a newline, I need to change the width of dijit_form_TextBox_0** to 50%, and the positioning of dijit__InlineEditor_0 to display: inline**; or to change the positioning of everything (most of my layout is floated, so position: absolute doesn't fit) I cannot address those span elements in my css to change the properties, because the element.style has priority, of course. I don't understand the logic in this system... why is dijit generating the style directly inside the element? how can I change these properties? Thanks Tom

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• JQGrid and JQuery Autocomplete

  - by Neff

  When implementing JQGrid 4.3.0, Jquery 1.6.2, and JQuery UI 1.8.16 Ive come across an issue with the Inline edit. When the inline edit is activated, some of the elements get assigned an auto complete. When the inline edit is canceld or saved, the auto complete does not always go away (selecting text by double clicking it then hitting delete, then hitting escape to exit row edit). Leaving the auto complete controls in edit mode when the row is no longer considered in edit mode. Perhaps you can tell me if there is a problem with the initialization or if I you are aware of an event post-"afterrestorefunc" that the fields can be returned to their "original" state. Original state being displayed as data in the JQGrid row. I've tried removing the DOM after row close, .remove() and .empty(): ... "afterrestorefunc": function(){ $('.ui-autocomplete-input').remove(); } ... but that causes other issues, such as the jqgrid is not able to find the cell when serializing the row for data or edit, and requires a refresh of the page, not just jqgrid, to be able to once again see the data from that row. Auto complete functionality for the element is created on the double click of the row: function CreateCustomSearchElement(value, options, selectiontype) { ... var el; el = document.createElement("input"); ... $(el).autocomplete({ source: function (request, response) { $.ajax({ url: '<%=ResolveUrl("~/Services/AutoCompleteService.asmx/GetAutoCompleteResponse") %>', data: "{ 'prefixText': '" + request.term + "', 'contextKey': '" + options.name + "'}", dataType: "json", type: "POST", contentType: "application/json; charset=utf-8", success: function (data) { response($.map(data.d, function (item) { return { label: Trim(item), value: Trim(item), searchVal: Trim(item) } })) } }); }, select: function (e, item) { //Select is on the event of selection where the value and label have already been determined. }, minLength: 1, change: function (event, ui) { //if the active element was not the search button //... } }).keyup(function (e) { if (e.keyCode == 8 || e.keyCode == 46) { //If the user hits backspace or delete, check the value of the textbox before setting the searchValue //... } }).keydown(function (e) { //if keycode is enter key and there is a value, you need to validate the data through select or change(onblur) if (e.keyCode == '13' && ($(el).val())) { return false; } if (e.keyCode == '220') { return false } }); } Other Sources: http://www.trirand.com/jqgridwiki/doku.php?id=wiki:inline_editing http://api.jqueryui.com/autocomplete/ Update: I tried only creating the autocomplete when the element was focused, and removing it when onblur. That did not resolve the issue either. It seems to just need the autocomplete dropdown to be triggered.

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• .net ViewState in page lifecycle

  - by caltrop

  I have a page containing a control called PhoneInfo.ascx. PhoneInfo is dynamically created using LoadControl() and then the initControl() function is called passing in an initialization object to set some initial textbox values within PhoneInfo. The user then changes these values and hits a submit button on the page which is wired up to the "submit_click" event. This event invokes the GetPhone() function within PhoneInfo. The returned value has all of the new user entered values except that the phoneId value (stored in ViewState and NOT edited by the user) always comes back as null. I believe that the viewstate is responsible for keeping track of user entered data across a postback, so I can't understand how the user values are coming back but not the explicitly set ViewState["PhoneId"] value! If I set the ViewState["PhoneId"] value in PhoneInfo's page_load event, it retrieves it correctly after the postback, but this isn't an option because I can only initialize that value when the page is ready to provide it. I'm sure I am just messing up the page lifecycle somehow, any suggestion or questions would really help! I have included a much simplified version of the actual code below. Containing page's codebehind protected void Page_Load(object sender, EventArgs e) { Phone phone = controlToBind as Phone; PhoneInfo phoneInfo = (PhoneInfo)LoadControl("phoneInfo.ascx"); //Create phoneInfo control phoneInfo.InitControl(phone); //use controlToBind to initialize the new control Controls.Add(phoneInfo); } protected void submit_click(object sender, EventArgs e) { Phone phone = phoneInfo.GetPhone(); } PhoneInfo.ascx codebehind protected void Page_Load(object sender, EventArgs e) { } public void InitControl(Phone phone) { if (phone != null) { ViewState["PhoneId"] = phone.Id; txt_areaCode.Text = SafeConvert.ToString(phone.AreaCode); txt_number.Text = SafeConvert.ToString(phone.Number); ddl_type.SelectedValue = SafeConvert.ToString((int)phone.Type); } } public Phone GetPhone() { Phone phone = new Phone(); if ((int)ViewState["PhoneId"] >= 0) phone.Id = (int)ViewState["PhoneId"]; phone.AreaCode = SafeConvert.ToInt(txt_areaCode.Text); phone.Number = SafeConvert.ToInt(txt_number.Text); phone.Type = (PhoneType)Enum.ToObject(typeof(PhoneType), SafeConvert.ToInt(ddl_type.SelectedValue)); return phone; } }

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• How to code a keyboard button to switch between 2 modes?

  - by le.shep20

  Hi! i'm doing a project, i'm not going to details but i will simplify my idea, i'm using Morse Code ( dot and dash) and i have 2 methods: convert_MorseToChar() and Convert_MorseTonum() in the convert_MorseToChar() method there is swich to compare the input from a user which will be Morse codes and mapping it to characters: private String convert_MorseToChar(ref string Ch) { switch (Ch) { Case ".-": MorsetoChar = "a" break; Case "-...": MorsetoChar = "b" break; Case "-.-.": MorsetoChar = "c" break; Case "-..": MorsetoChar = "d" break; Case ".": MorsetoChar = "e" break; } } and the other method Convert_MorseToNum(), ues the SAME combinations of Morse codes but mapping them to numbers: private String Convert_MorseToNum(ref string Ch) { switch (Ch) { Case ".-": MorsetoChar = "1" break; Case "-...": MorsetoChar = "2" break; Case "-.-.": MorsetoChar = "3" break; Case "-..": MorsetoChar = "4" break; Case ".": MorsetoChar = "5" break; } } now the senario is: there are 2 Textbox, one the user will write Morse codes in it and the other is for the output. The user will write dot "." and dash "-" from the keyboard and press Enter then the program will go to ONE of the 2 methods to convert the Morse codes. Now what tells the program where to go to convert?? my question is: I want to create mode key to swich between 2 modes: MorseTochar and MorseToNum. i want the down arrow key to act like a mode, when a user press the down arrow then it the program will be in MorseToChar mode, when ever the user input the program directly use the method convert_MorseToChar to convert to characters. and when the user press the down arrow agian, the prohram will swich to MorseToNum mode here when ever the user input as morsecode, the program will directly use the method Convert_MorseToNum() to convert to numbers. HOW I CAN DO THAT Pleaaaas!!! help me! Please excuse my English, English is not my native language :)

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• Auto update the content in ASP.NET

  - by Zerotoinfinite

  I have to design a website where user can update their status, just like facebook and twitter and other social networking sites. Now my requirement is to refresh the feed with new user updates. Ex: when the new status comes facebook automatically add that on the top of the feed. on the other hand twitter shows the number of updates which is ready to be load. both ways are acceptable to me Now, I have to decide what is the best way to achieve this functionality. I am open to use ASP.NET. So I am confused that regular repeater control with timer and auto refresh or any other way? (I am wondering that if I set repeater for auto update and meanwhile if user is performing some action on any status it will lost). or do I need to change my framework from ASP.NET to ASP.NET MVC (I am little afraid with MVC as I have very less knowledge regarding it and I know it has a learning curve to master ajax/Jquery things) Any suggestion how I can I achieve it in a better and feasible way? EDIT1 I am not looking for a code but I want advice to achieve this. Supporting URL's would be appreciated. EDIT2 I am open to JQuery which can regularly check the database and fill the section. But my concern is this that if user is updating any comment and want to load/feed is automatically generated. his textbox text shouldn't be disappear (just like facebook, twitter or Linkedin) EDIT3 I have seen that on Stack overflow when any other user has modified the question/answer, I got notification like this question/answer is modified. and when I clicked on that notification only that section got reloaded. I am curious to know how to achieve this functionality. So that when user is commenting on a status/post and if meanwhile someone has updated the content then it would show the other user comment. Edit4 Could someone please recommend me an example of ASP.NET MVC 3+ which can do similar kind of activity (i.e. one input box and once user insert an text it will add the item in the list (with JQuery).

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• Enable PostBack for a ASP.NET User Control

  - by Steven

  When I click my "Query" the values for my user controls are reset. How do I enable PostBack for my user control? myDatePicker.ascx <%@ Control Language="vb" CodeBehind="myDatePicker.ascx.vb" Inherits="Website.myDate" AutoEventWireup="false" %> <%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %> <asp:TextBox ID="DateTxt" runat="server" ReadOnly="True" /> <asp:Image ID="DateImg" runat="server" ImageUrl="~/Calendar_scheduleHS.png" EnableViewState="True" EnableTheming="True" /> <asp:CalendarExtender ID="DateTxt_CalendarExtender" runat="server" Enabled="True" TargetControlID="DateTxt" PopupButtonID="DateImg" DefaultView="Days" Format="ddd MMM dd, yyyy" EnableViewState="True"/> myDatePicker.ascx Partial Public Class myDate Inherits System.Web.UI.UserControl Public Property SelectedDate() As Date? Get Dim o As Object = ViewState("SelectedDate") If o = Nothing Then Return Nothing End If Return Date.Parse(o) End Get Set(ByVal value As Date?) ViewState("SelectedDate") = value End Set End Property End Class Default.aspx <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="Website._Default" EnableEventValidation="false" EnableViewState="true" %> <%@ Register TagPrefix="my" TagName="DatePicker" Src="~/myDatePicker.ascx" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajax" %> <%@ Register Assembly="..." Namespace="System.Web.UI.WebControls" TagPrefix="asp" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> ... <body> <form id="form1" runat="server"> <div class="mainbox"> <div class="query"> Start Date<br /> <my:DatePicker ID="StartDate" runat="server" EnableViewState="True" /> End Date <br /> <my:DatePicker ID="EndDate" runat="server" EnableViewState="True" /> ... <div class="query_buttons"> <asp:Button ID="Button1" runat="server" Text="Query" /> </div> </div> <asp:GridView ID="GridView1" ... > </form> </body> </html> Default.aspx.vb Imports System.Web.Services Imports System.Web.Script.Services Imports AjaxControlToolkit Protected Sub Page_Load(ByVal sender As Object, _ ByVal e As EventArgs) Handles Me.Load End Sub Partial Public Class _Default Inherits System.Web.UI.Page Protected Sub Button1_Click(ByVal sender As Object, _ ByVal e As EventArgs) Handles Button1.Click GridView1.DataBind() End Sub End Class

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• ASP.NET Dynamically filtering data

  - by Jasper

  For a project I'm working on, we're looking for a way to dynamically add filters to a page which then control the dataoutput in, for instance, a grid. We want to add the filters dynamically because we want the customer to be able to change which properties can be filtered and what filtertype (textbox, dropdown, colourpicker, etc.) should be used. The filter should work as follows: - The customer links a filter to a certain property and specifies the filtertype (for this example: dropdown). - A user control which contains all the filter loads all filters specified - The filters load all values of the specified property as options. The first time the page loads; this would be the values of all items. - Now the user selects a value from one of the filters; the page reloads - Only items which have the specified filter value are retrieved, the user may specify one or more filters at the same time. - Once a user drills down by filtering, only filtervalues of the retrieved items should be used in the other filters. I have the following problems: - When I create the filters runtime, events are lost because the controls get recreated each postback. - I could place the filters in PreInit which should solve this, but then determining which controls should be loaded becomes a problem since loading all environment vars isn't finished yet - I don't know a good way of returning all the filter values to a central point from which I can make a good query. - The query has to be dynamic. I'm using linq which I want to make dynamic so I don't have to select everything everytime. How to make a dynamic select query based on a string stored in the database? - I have to select items based on the filtervalues and then adjust the rest of the filters to the already made selection. That kind of messes up the whole regular databinding sequence. Any help in one of the above would be great! PS: One thing I thought about was passing along filter values in the postback which would have to be recognizable. That way the server could use them for selection and then create the filters and autoselect the previously selected filtervalues. I'm not quite sure how to acheive this though...

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• Mindblowing jQuery Weirdness

  - by Jason

  ...at least to me. This code used to work fine. I'm pretty sure nothing has changed, but now all of the sudden it behaves oddly. Basically I'm trying to create inline editing functionality. When the user clicks on the link, it dynamically generates a textbox and a confirm and cancel link. I'm having problems with the cancel link not removing everything in the cell. HTML: ... <td class="bid"> <a href="javascript:" class="102093" title="Click to modify bid">$0.45</a> </td> ... Binding jQuery (in $(function())): $('.bid a').live('click', renderBidChange); .... $('.report_table .cancel').live('click', cancelUpdate); renderBidChange (this function creates the dynamic elements): function renderBidChange(){ var cpc = $(this); var value = cpc.text().replace('$', ''); var cell = cpc.parent('.bid'); cpc.hide(); var input = document.createElement('input'); $(input).attr({type:'text',class:'dynamic cpc-input'}).val(value); cell.append(input); var accept = document.createElement('a'); $(accept).addClass('accept').attr({'href':'javascript:', 'title':'Accept Changes'}).text('Accept Changes'); cell.append(accept); var cancel = document.createElement('a'); $(cancel).addClass('cancel').attr({'href':'javascript:', 'title':'Cancel Changes'}).text('Cancel Changes'); cell.append(cancel); $(input).focus(); input.select(); } cancelUpdate this function just removes everything visible (all the dynamic junk in this case) in the cell and shows what used to be there. function cancelUpdate(){ var cell = $(this).parent(); cell.find(':visible').remove(); cell.find(':hidden').show(); } However, for some reason, the cancel link remains after it is clicked! Everything else is removed except that. W T F Thanks for any insight you're able to provide! I'm sure it's just some stupid little detail I'm over[caffeinatedly]looking... UPDATE Immediately after posting this I epiphanied that it may be a CSS issue, but after double checking my code, it is not.

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