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• ASP.NET configure data source is not returning anything?

  - by Greg McNulty

  I'm selecting table data of the current user: SELECT [ConfidenceLevel], [LoveLevel], [HappinessLevel] FROM [UserData] WHERE ([UserProfileID] = @UserProfileID) I have set a control to the unique user ID and it is getting the correct value: HTML: <asp:Label ID="userID" runat="server" Text="Labeluser"></asp:Label> C#: userID.Text = Membership.GetUser().ProviderUserKey.ToString(); I then use it in the where clause using the Configure Data Source window unique ID = control then controlID userID (fills in .text for me) I compile and run but nothing shows up where the table should be. Any suggestions? Here is the code it has created: <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"> <Columns> <asp:BoundField DataField="ConfidenceLevel" HeaderText="ConfidenceLevel" SortExpression="ConfidenceLevel" /> <asp:BoundField DataField="LoveLevel" HeaderText="LoveLevel" SortExpression="LoveLevel" /> <asp:BoundField DataField="HappinessLevel" HeaderText="HappinessLevel" SortExpression="HappinessLevel" /> </Columns> </asp:GridView> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionStringToDB %>" SelectCommand="SELECT [ConfidenceLevel], [LoveLevel], [HappinessLevel] FROM [UserData] WHERE ([UserProfileID] = @UserProfileID)"> <SelectParameters> <asp:ControlParameter ControlID="userID" Name="UserProfileID" PropertyName="Text" Type="Object" /> </SelectParameters> </asp:SqlDataSource>

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• Android: Unable to make httprequest behind firewall

  - by Yang

  The standard getUrlContent works welll when there is no firewall. But I got exceptions when I try to do it behind a firewall. I've tried to set "http proxy server" in AVD manager, but it didn't work. Any idea how to correctly set it up? protected static synchronized String getUrlContent(String url) throws ApiException { if(url.equals("try")){ return "thanks"; } if (sUserAgent == null) { throw new ApiException("User-Agent string must be prepared"); } // Create client and set our specific user-agent string HttpClient client = new DefaultHttpClient(); HttpGet request = new HttpGet(url); request.setHeader("User-Agent", sUserAgent); try { HttpResponse response = client.execute(request); // Check if server response is valid StatusLine status = response.getStatusLine(); if (status.getStatusCode() != HTTP_STATUS_OK) { throw new ApiException("Invalid response from server: " + status.toString()); } // Pull content stream from response HttpEntity entity = response.getEntity(); InputStream inputStream = entity.getContent(); ByteArrayOutputStream content = new ByteArrayOutputStream(); // Read response into a buffered stream int readBytes = 0; while ((readBytes = inputStream.read(sBuffer)) != -1) { content.write(sBuffer, 0, readBytes); } // Return result from buffered stream return new String(content.toByteArray()); } catch (IOException e) { throw new ApiException("Problem communicating with API", e); } }

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• Serialize a C# class to xml. Store the XML as a string in SQL Server and then restore the class late

  - by BrianK

  I want to serialize a class to xml and store that in a field in a database. I can serialize with this: StringWriter sw = new StringWriter(); XmlSerializer xmlser = new XmlSerializer(typeof(MyClass)); xmlser.Serialize(sw, myClassVariable); string s = sw.ToString(); sw.Close(); Thats works, but it has the namesapces in it. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" Will these slow down the deserialization because it will go out to those and verify the XML? I got rid of the namespaces by creating a blank XmlSerializerNamespaces and using that to serialize, but then the xml still had namespaces around integer variables: <anyType xmlns:q1="http://www.w3.org/2001/XMLSchema" d3p1:type="q1:int" xmlns:d3p1="http://www.w3.org/2001/XMLSchema-instance"> 3 </anyType> My question is: Is it necessary to have the namesapces for deserialization and if not, how to get rid of them? How do I tell it fields are ints so it doesnt put in "anytype" Thanks, Brian

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• Winforms, databinding, Listbox and textbox

  - by Snake

  Hi dear friends, I have a ListBox (MyListBox) on my screen, and a Textbox (MyTextBox). The ListBox is filled with a List(Of T), which are all custom items. Now I try to do this: The ListBox' datasource is the List(Of T). Now when an Item changes I want the textbox to be updated to a particular property of the selected item in my ListBox. In code this means: Me.MyListBox.DisplayMember = "SelectionName" Me.MyListBox.ValueMember = "Id" MyTextbox.DataBindings.Add(New Binding("Text", Me._listOfItems, "SelectedItem.Comment", True, DataSourceUpdateMode.OnPropertyChanged)) Me.MyListBox.DataSource = Me._listOfItems this does not work. But when I bind to SelectedValue instead of SelectedItem it works perfectly. The _listOfItems is declared as this: Dim _listOfItems As List(Of MyItem) = New List(Of MyItem)() Where MyItem is this: public class MyItem { public string SelectionName { get; set; } public int Id { get; set; } public string Comment { get; set; } } I tried overriding the ToString() in MyItem so that it would use that. But that doesn't work either. Anybody care to give it a try? Thanks! -Snakiej

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• Validation for Alert dialog

  - by Hossam

  Hi Everyone, Im working in a game and when the player finished the level , Im asking the Player to enter his name on EditText in Alert Dialog : AlertDialog.Builder builder = new Builder(this); LayoutInflater inflater = getLayoutInflater(); // Inflate and set the layout for the dialog // Pass null as the parent view because its going in the dialog layout builder.setView(inflater.inflate(R.layout.dialog_name, null)) // Add action buttons .setPositiveButton(R.string.alertName, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { playerText = (EditText) ((AlertDialog)dialog).findViewById(R.id.username); if(playerText.getText() != null && playerText.getText().length() != 0) Helper.currentPlayer.setName(playerText.getText().toString()); //calculate the score // save in data base PlayerDataSource playerDS = new PlayerDataSource(getApplicationContext()); playerDS.open(); Helper.currentPlayer = playerDS.createPlayer(Helper.currentPlayer.getName(), Helper.currentPlayer.getScore(), Helper.currentPlayer.levels, Helper.currentPlayer.times, LanguageHelper.div); playerDS.close(); saveStmc(); mainScene.setChildScene(choicesMenu, false, true, true); } }) .setTitle("Please Enter Your name") .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { } }); alert = builder.create(); When the Player enters his name and press OK (Positive button) I will check in database if the name exists or not, if the name is exist : show Toast and not dismiss the alert to write another name. How to do that?

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• PInvokeStackImbalance -- C# with offreg.dll ( windows ddk7 )

  - by user301185

  I am trying to create an offline registry in memory using the offreg.dll provided in the windows ddk 7 package. You can find out more information on the offreg.dll here: MSDN Currently, while attempted to create the hive using ORCreateHive, I receive the following error: "Managed Debugging Assistant 'PInvokeStackImbalance' has detected a problem. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature." Here is the offreg.h file containing ORCreateHive: typedef PVOID ORHKEY; typedef ORHKEY *PORHKEY; VOID ORAPI ORGetVersion( __out PDWORD pdwMajorVersion, __out PDWORD pdwMinorVersion ); DWORD ORAPI OROpenHive ( __in PCWSTR lpHivePath, __out PORHKEY phkResult ); DWORD ORAPI ORCreateHive ( __out PORHKEY phkResult ); DWORD ORAPI ORCloseHive ( __in ORHKEY Handle ); The following is my C# code attempting to call the .dll and create the pointer for future use. using System.Runtime.InteropServices; namespace WindowsFormsApplication6 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } [DllImport("offreg.dll", CharSet = CharSet.Auto, EntryPoint = "ORCreateHive", SetLastError=true, CallingConvention = CallingConvention.StdCall)] public static extern IntPtr ORCreateHive2(); private void button1_Click(object sender, EventArgs e) { try { IntPtr myHandle = ORCreateHive2(); } catch (Exception r) { MessageBox.Show(r.ToString()); } } } } I have been able to create pointers in the past with no issue utilizing user32.dll, icmp.dll, etc. However, I am having no such luck with offreg.dll. Thank you.

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• about Quick Sort

  - by matin1234

  Hi I have written this code but it will print these stack traces in the console please help me thanks! (Aslo "p" and "q" are the first and last index of our array ,respectively) public class JavaQuickSort { public static void QuickSort(int A[], int p, int q) { int i, last = 0; Random rand = new Random(); if (q < 1) { return; } **swap(A, p, rand.nextInt() % (q+1));** for (i = p + 1; i <= q; i++) { if (A[i] < A[p]) { swap(A, ++last, i); } } swap(A, p, last); QuickSort(A, p, last - 1); QuickSort(A, last + 1, q); } private static void swap(int[] A, int i, int j) { int temp; temp = A[i]; **A[i] = A[j];** A[j] = temp; } public static void main(String[] args){ int[] A = {2,5,7,3,9,0,1,6,8}; **QuickSort(A, 0,8 );** System.out.println(Arrays.toString(A)); } } the Stack traces : run: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -3 at JavaQuickSort.swap(JavaQuickSort.java:38) at JavaQuickSort.QuickSort(JavaQuickSort.java:22) at JavaQuickSort.main(JavaQuickSort.java:45) Java Result: 1 BUILD SUCCESSFUL (total time: 2 seconds) I also bold those statements that cause these stack traces. like == ** ...**

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• Removing PDF attachments via itext

  - by r00fus

  I'm trying to remove attachments from a number of my pdf files (I can extract via pdftk, so preserving them is not an issue). I coded the following based on an example found from a google search: import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.*; import com.lowagie.text.pdf.*; class pdfremoveattachment { public static void main(String[] args) throws IOException, DocumentException { if (args.length < 2) { System.out.println("Usage: java PDFremoveAttachments source.pdf target.pdf"); System.exit(1); } PdfReader sourcePDF = new PdfReader(args[0]); removeAttachments(sourcePDF); FileOutputStream targetFOS = new FileOutputStream(args[1]); PdfStamper targetPDF = new PdfStamper(sourcePDF,targetFOS); targetPDF.close(); } public static void removeAttachments(PdfReader reader) { PdfDictionary catalog = reader.getCatalog(); // System.out.println(catalog.getAsDict(PdfName.NAME)); // this would print "null" PdfDictionary names = (PdfDictionary)PdfReader.getPdfObject(catalog.get(PdfName.NAMES)); // System.out.println(names.toString()); //this returns NPE if( names != null) { PdfDictionary files = (PdfDictionary) PdfReader.getPdfObject(names.get(PdfName.FILEATTACHMENT)); if( files!= null ){ for( Object key : files.getKeys() ){ files.remove((PdfName)key); } files = (PdfDictionary) PdfReader.getPdfObject(names.get(PdfName.EMBEDDEDFILES)); } if( files!= null ){ for( Object key : files.getKeys() ){ files.remove((PdfName)key); } reader.removeUnusedObjects(); } } } } If anyone knows how I might be able to remove attachments, I'd greatly appreciate a reply.

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• Struts DB query execution problem

  - by henderunal

  Hello, I am trying to insert a data to my db2 9.7 database from IBM RAD 7.5 using struts 1.3 But when i execute the query i got this errors: http://pastebin.com/3UPTVKbh KayitBean kayit=(KayitBean)form; //String name = kayit.getName(); String name="endee"; DBConn hb = new DBConn(); Connection conn =hb.getConnection(); System.out.println("basarili"); //String sql = "SELECT * FROM ENDER.\"MEKANDENEME\""; String sql = "INSERT INTO ENDER.\"MEKANDENEME\" VALUES (\'endere\' ,\'bos\');"; System.out.println(sql); System.out.println("basarili2"); PreparedStatement ps = conn.prepareStatement(sql); System.out.println("basarili3"); ResultSet rs = ps.executeQuery(); // String ender=rs.getArray(1).toString(); System.out.println("basarili4"); // System.out.println(rs); conn.close(); I am receiving this after System.out.println("basarili3");" Please help me.

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• Using A Local file path in a Streamwriter object ASP.Net

  - by Nick LaMarca

  I am trying to create a csv file of some data. I have wrote a function that successfully does this.... Private Sub CreateCSVFile(ByVal dt As DataTable, ByVal strFilePath As String) Dim sw As New StreamWriter(strFilePath, False) ''# First we will write the headers. ''EDataTable dt = m_dsProducts.Tables[0]; Dim iColCount As Integer = dt.Columns.Count For i As Integer = 0 To iColCount - 1 sw.Write(dt.Columns(i)) If i < iColCount - 1 Then sw.Write(",") End If Next sw.Write(sw.NewLine) ''# Now write all the rows. For Each dr As DataRow In dt.Rows For i As Integer = 0 To iColCount - 1 If Not Convert.IsDBNull(dr(i)) Then sw.Write(dr(i).ToString()) End If If i < iColCount - 1 Then sw.Write(",") End If Next sw.Write(sw.NewLine) Next sw.Close() End Sub The problem is I am not using the streamwriter object correctly for what I trying to accomplish. Since this is an asp.net I need the user to pick a local filepath to put the file on. If I pass any path to this function its gonna try to write it to the directory specified on the server where the code is. I would like this to popup and let the user select a place on their local machine to put the file.... Dim exData As Byte() = File.ReadAllBytes(Server.MapPath(eio)) File.Delete(Server.MapPath(eio)) Response.AddHeader("content-disposition", String.Format("attachment; filename={0}", fn)) Response.ContentType = "application/x-msexcel" Response.BinaryWrite(exData) Response.Flush() Response.End() I am calling the first function in code like this... Dim emplTable As DataTable = SiteAccess.DownloadEmployee_H() CreateCSVFile(emplTable, "C:\\EmplTable.csv") Where I dont want to have specify the file loaction (because this will put the file on the server and not on a client machine) but rather let the user select the location on their client machine. Can someone help me put this together? Thanks in advance.

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• Generic object to object mapping with parametrized constructor

  - by Rody van Sambeek

  I have a data access layer which returns an IDataRecord. I have a WCF service that serves DataContracts (dto's). These DataContracts are initiated by a parametrized constructor containing the IDataRecord as follows: [DataContract] public class DataContractItem { [DataMember] public int ID; [DataMember] public string Title; public DataContractItem(IDataRecord record) { this.ID = Convert.ToInt32(record["ID"]); this.Title = record["title"].ToString(); } } Unfortanately I can't change the DAL, so I'm obliged to work with the IDataRecord as input. But in generat this works very well. The mappings are pretty simple most of the time, sometimes they are a bit more complex, but no rocket science. However, now I'd like to be able to use generics to instantiate the different DataContracts to simplify the WCF service methods. I want to be able to do something like: public T DoSomething<T>(IDataRecord record) { ... return new T(record); } So I'd tried to following solutions: Use a generic typed interface with a constructor. doesn't work: ofcourse we can't define a constructor in an interface Use a static method to instantiate the DataContract and create a typed interface containing this static method. doesn't work: ofcourse we can't define a static method in an interface Use a generic typed interface containing the new() constraint doesn't work: new() constraint cannot contain a parameter (the IDataRecord) Using a factory object to perform the mapping based on the DataContract Type. does work, but: not very clean, because I now have a switch statement with all mappings in one file. I can't find a real clean solution for this. Can somebody shed a light on this for me? The project is too small for any complex mapping techniques and too large for a "switch-based" factory implementation.

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• Storing User Information in Session with aspNetMembershipProvider

  - by Muhammad Adeel Zahid

  Hi Everyone, i m developing an application in .NET mvc2. i m using aspnetMembershipProvider for User registration and related activities. i need some custom information about user that i stored in a separate table (sysUser for example) and linked it to aspnetUser table through foreign key. after Login i need to fetch user's credentials from sysUser table and push it to the session. For this Account controller's Logon method seemed best to me and i pasted following code in my Logon ActionResult if (!ValidateLogOn(userName, password)) { return View(); } FormsAuth.SignIn(userName, rememberMe); ApplicationRepository _ApplicationRepository = new ApplicationRepository(); MembershipUser aspUser = Membership.GetUser(userName); SessionUser CurrentUser = _ApplicationRepository.GetUserCredentials(aspUser.ProviderUserKey.ToString()); //Session["CurrentUser"] = CurrentUser; if (!String.IsNullOrEmpty(returnUrl)) { return Redirect(returnUrl); } else { return RedirectToAction("Index", "Home"); } The code is working perfectly for me and put my desired information in the session but the thing is that if a user selects Remember me and on his next visit he won't have to Log in and i would not find my desired information in the Session. Can anyone guide me where should i put my code that stores the user information in the session. any Help is Highly appreciated Regards Adeel

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• How to create column of type password in gridview?

  - by Preeti

  Hi, I am creating an application in which user selects files and provides credentials to open that file. For that i have created three columns in a gridview. User enters password in password column. I want to display '*' in place of characters like we can create a textbox of password type. I have tried this code on 'GridView_CellClick' event : if (GridView.Columns[e.ColumnIndex].HeaderText == "Password") { txtPassword[e.RowIndex] = new TextBox(); txtPassword[e.RowIndex].Name = "txtPassword"+e.RowIndex; txtPassword[e.RowIndex].PasswordChar = '*'; txtPassword[e.RowIndex].Visible = true; txtPassword[e.RowIndex].TextChanged += new if (GridView.CurrentCell.Value == null) txtPassword[e.RowIndex].Text = ""; else txtPassword[e.RowIndex].Text = GridView.CurrentCell.Value.ToString(); txtPassword[e.RowIndex].Location = GridView.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex + 1, false).Location; txtPassword[e.RowIndex].Size = GridView.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex + 1, false).Size; txtPassword[e.RowIndex].Visible = true; txtPassword[e.RowIndex].Focus(); } But in above solution characters are displayed. How can i solve this problem???

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• getting incorrect error even if the condition is fulfilled

  - by Tapan Desai

  I am trying to show the message based on the text shown on webpage after a particular action. If the webpage contains text MESSAGE HAS BEEN SUBMITTED SUCCESSFULLY, I want to print Message sent successfully on the screen otherwise MESSAGE SENDING FAILED. Everything is working fine but for one thing. PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(sendConnection.getOutputStream()), true); printWriter.print(sendContent); printWriter.flush(); printWriter.close(); //Reading the returned web page to analyse whether the operation was sucessfull BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(sendConnection.getInputStream())); StringBuilder SendResult = new StringBuilder(); String line; while ((line = bufferedReader.readLine()) != null) { SendResult.append(line); } if (SendResult.toString().contains("MESSAGE HAS BEEN SUBMITTED SUCCESSFULLY")) { System.out.println("Message sent to " + phoneNumber + " successfully."); } else { System.err.println("Message could not send to " + phoneNumber + ". Also check login credentials"); } bufferedReader.close(); The problem is that even if the webpage contains the text MESSAGE HAS BEEN SUBMITTED SUCCESSFULLY, the condition always goes into ELSE part and show MESSAGE SENDING FAILED but thats not true because the message has been sent and i see the MESSAGE HAS BEEN SUBMITTED SUCCESSFULLY on the webpage. Can anyone tell me where am i going wrong?

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• How can i use generic list with foreach?

  - by Phsika

  if i compiled below codes error return foreach loop how can i solve it? Error:Error 1 foreach statement cannot operate on variables of type 'Sortlist.MyCalisan' because 'Sortlist.MyCalisan' does not contain a public definition for 'GetEnumerator' C:\Users\yusuf.karatoprak\Desktop\ExcelToSql\TestExceltoSql\Sortlist\Program.cs 46 13 Sortlist static void EskiMetodlaListele() { MyCalisan myCalisan = new MyCalisan(); Calisan calisan = new Calisan(); calisan.Ad = "ali"; calisan.SoyAd = "abdullah"; calisan.ID = 1; myCalisan.list.Add(calisan); foreach (Calisan item in myCalisan) { Console.WriteLine(item.Ad.ToString()); } } } public class Calisan { public int ID { get; set; } public string Ad { get; set; } public string SoyAd { get; set; } } public class MyCalisan { public List<Calisan> list { get; set; } public MyCalisan() { list = new List(); } }

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• Binding ListBox ItemCount to IvalueConverter

  - by Ben

  Hi All, I am fairly new to WPF so forgive me if I am missing something obvious. I'm having a problem where I have a collection of AggregatedLabels and I am trying to bind the ItemCount of each AggregatedLabel to the FontSize in my DataTemplate so that if the ItemCount of an AggregatedLabel is large then a larger fontSize will be displayed in my listBox etc. The part that I am struggling with is the binding to the ValueConverter. Can anyone assist? Many thanks! XAML Snippet <DataTemplate x:Key="TagsTemplate"> <WrapPanel> <TextBlock Text="{Binding Name, Mode=Default}" TextWrapping="Wrap" FontSize="{Binding ItemCount, Converter={StaticResource CountToFontSizeConverter}, Mode=Default}" Foreground="#FF0D0AF7"/> </WrapPanel> </DataTemplate> <ListBox x:Name="tagsList" ItemsSource="{Binding AggregatedLabels, Mode=Default}" ItemTemplate="{StaticResource TagsTemplate}" Style="{StaticResource tagsStyle}" Margin="200,10,16.171,11.88" /> AggregatedLabel Collection using (DB2DataReader dr = command.ExecuteReader()) { while (dr.Read()) { AggregatedLabelModel aggLabel = new AggregatedLabelModel(); aggLabel.ID = Convert.ToInt32(dr["LABEL_ID"]); aggLabel.Name = dr["LABEL_NAME"].ToString(); LabelData.Add(aggLabel); } } Converter public class CountToFontSizeConverter : IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { const int minFontSize = 6; const int maxFontSize = 38; const int increment = 3; int count = (int)value; if ((minFontSize + count + increment) < maxFontSize) { return minFontSize + count + increment; } return maxFontSize; } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } #endregion } AggregatedLabel Class public class AggregatedLabelModel { public int ID { get; set; } public string Name { get; set; } } CollectionView ListCollectionView labelsView = new ListCollectionView(LabelData); labelsView.GroupDescriptions.Add(new PropertyGroupDescription("Name"));

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• How to adjust size of programatically created Bitmap to match text drawn on it?

  - by TooFat

  I have the following .ashx page that takes some query string parameters and returns a bitmap with the specified text written on it. The problem I have is that I am currently just manually setting the initial size of the bitmap at 100 X 100 when what I really want is to have the bitmap be just big enough to include all the text that was written to it. How can I do this? public void ProcessRequest (HttpContext context) { context.Response.ContentType = "image/png"; string text = context.Request.QueryString["Text"]; //set FontName string fontName; if (context.Request.QueryString["FontName"] != null) { fontName = context.Request.QueryString["FontName"]; } else { fontName = "Arial"; } //Set FontSize int fontEms; if (context.Request.QueryString["FontSize"] != null) { string fontSize = context.Request.QueryString["FontSize"]; fontEms = Int32.Parse(fontSize); } else { fontEms = 12; } //Set Font Color System.Drawing.Color color; if (context.Request.QueryString["FontColor"] != null) { string fontColor = context.Request.QueryString["FontColor"]; color = System.Drawing.ColorTranslator.FromHtml(fontColor); context.Response.Write(color.ToString()); } else { color = System.Drawing.Color.Red; } using (System.Drawing.Text.PrivateFontCollection fnts = new System.Drawing.Text.PrivateFontCollection()) using (System.Drawing.FontFamily fntfam = new System.Drawing.FontFamily(fontName)) using (System.Drawing.SolidBrush brush = new System.Drawing.SolidBrush(color)) using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(100, 100)) { using (System.Drawing.Font fnt = new System.Drawing.Font(fntfam, fontEms)) { fnts.AddFontFile(System.IO.Path.Combine(@"C:\Development\Fonts\", fontName)); System.Drawing.Graphics graph = System.Drawing.Graphics.FromImage(bmp); graph.DrawString(text, fnt, brush, new System.Drawing.Point(0, 0)); string imgPath = System.IO.Path.Combine(@"C:\Development\MyPath\Images\Text", System.IO.Path.GetRandomFileName()); bmp.Save(imgPath); context.Response.WriteFile(imgPath); } } }

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• Problems when handling orientation changes

  - by nixau

  Hi all, I need to handle orientation changes in my Android application. For this purpose I decided to use OrientationEventListener convenience class. But his callback method is given somewhat strange behavior. My application starts in the portrait mode and then eventually switches to the lanscape one. I have some custom code executing in the callback onOrientationChanged method that provides some additional UI handling logic - it has a few calls to findViewById. What is strange is that when switching back from landscape to portrait mode onOrientationChanged callback is called twice, and what's even worse - the second call is dealing with bad Context - findViewById method starts returning null. These calls are made right from the MainThread @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); listener = new OrientationListener(); } @Override protected void onResume() { super.onResume(); // enabling listening listener.enable(); } @Override protected void onPause() { super.onPause(); // disabling listening listener.disable(); } I've replicated the same behavior with a dummy Activity without any logic except for one that deals with orientation hadling. I initiate orientation switch from the Android 2.2 emulator by pressing Ctrl+F11 What could be wrong? Upd: Inner class that implements OrientationEventListener private class OrientationListener extends OrientationEventListener { public OrientationL() { super(getBaseContext()); } @Override public void onOrientationChanged(int orientation) { toString(); } } }

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• Insert records using ExecuteNonQuery, showing exception that invalid column name

  - by tina

  Hi all, I am using SQL Server 2008. I want to insert records into a table using ExecuteNonQuery, for that I have written: customUtility.ExecuteNonQuery("insert into furniture_ProductAccessories(Product_id, Accessories_id, SkuNo, Description1, Price, Discount) values(" + prodid + "," + strAcc + "," + txtSKUNo.Text + "," + txtAccDesc.Text + "," + txtAccPrices.Text + "," + txtAccDiscount.Text + ")"); & following is ExecuteNonQuery function: public static bool ExecuteNonQuery(string SQL) { bool retVal = false; using (SqlConnection con = new SqlConnection(System.Web.Configuration.WebConfigurationManager.ConnectionStrings["dbConnect"].ToString())) { con.Open(); SqlTransaction trans = con.BeginTransaction(); SqlCommand command = new SqlCommand(SQL, con, trans); try { command.ExecuteNonQuery(); trans.Commit(); retVal = true; } catch(Exception ex) { //HttpContext.Current.Response.Write(SQL + "<br>" + ex.Message); //HttpContext.Current.Response.End(); } finally { // Always call Close when done reading. con.Close(); } return retVal; } } but it showing exception that invalid column name to Description1 and even it's value which coming from txtAccDesc.Text. I have tried by removing Description1 column, other records are getting inserted successfully. Could you please help me? Thanks.

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• Show image from clipboard to defalut imageviewer of windows using c#.net

  - by Rajesh Rolen- DotNet Developer

  I am using below function to make a image of current form and set it in clipboard Image bit = new Bitmap(this.Width, this.Height); Graphics gs = Graphics.FromImage(bit); gs.CopyFromScreen(this.Location, new Point(0, 0), bit.Size); Guid guid = System.Guid.NewGuid(); string FileName = guid.ToString(); //Copy that image in the clipbaord. Image imgToCopy = Image.FromFile(Path.Combine(Environment.CurrentDirectory, FileName + ".jpg")); Clipboard.SetImage(imgToCopy); Now my image is in clipboard and i am able to show it in picturebox on other form using below code : mypicturebox.Image = Clipboard.GetImage(); Now the the problem is that i want to show it in default imageviewer of that system. so for that i think using "System.Diagnostics.Process.Start" we can do that.. but i dont know, how to find default imageviewer and how to set clipboard's image in that ... please help me out... if i find solution than thats good otherwise i am thinking to save that file from clipboard to harddisk and then view it in window's default imageviewer... please help me to resolve my problem.. i am using c#.net

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• Flex 3 Close UrlLoader throws exception

  - by gmoniey

  I am trying to simulate a 'HEAD' method using UrlLoader; essentially, I just want to check for the presence of a file without downloading the entire thing. I figured I would just use HttpStatusEvent, but the following code throws an exception (one that I can't wrap in a try/catch block) when you run in debug mode. <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="init()"> <mx:Script> <![CDATA[ private static const BIG_FILE:String = "http://www.archive.org/download/gspmovvideotestIMG0021mov/IMG_0021.mov"; private var _loader:URLLoader; private function init():void { _loader = new URLLoader(); _loader.addEventListener(HTTPStatusEvent.HTTP_STATUS, statusHandler); _loader.addEventListener(IOErrorEvent.IO_ERROR, errorHandler); _loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, errorHandler); _loader.load(new URLRequest(BIG_FILE)); } public function unload():void { try { _loader.close(); _loader.removeEventListener(HTTPStatusEvent.HTTP_STATUS, statusHandler); _loader.removeEventListener(IOErrorEvent.IO_ERROR, errorHandler); _loader.removeEventListener(SecurityErrorEvent.SECURITY_ERROR, errorHandler); } catch(error:Error) { status.text = error.message; } } private function errorHandler(event:Event):void { status.text = "error"; unload(); } private function statusHandler(event:HTTPStatusEvent):void { if(event.status.toString().match(/^2/)) { status.text = "success"; unload(); } else { errorHandler(event); } } ]]> </mx:Script> <mx:Label id="status" /> I tried using ProgressEvents instead, but it seems that some 404 pages return content, so the status event will correctly identify if the page exists. Anyone have any ideas?

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• Why is this SocketException not caught by a generic catch routine?

  - by Tarnschaf

  Our company provides a network component (DLL) for a GUI application. It uses a Timer that checks for disconnections. If it wants to reconnect, it calls: internal void timClock_TimerCallback(object state) { lock (someLock) { // ... try { DoConnect(); } catch (Exception e) { // Log e.Message omitted // Raise event with e as parameter ErrorEvent(this, new ErrorEventArgs(e)); DoDisconnect(); } // ... } } So the problem is, inside of the DoConnect() routine a SocketException is thrown (and not caught). I would assume, that the catch (Exception e) should catch ALL exceptions but somehow the SocketException was not caught and shows up to the GUI application. protected void DoConnect() { // client = new TcpClient(); client.NoDelay = true; // In the following call the SocketException is thrown client.Connect(endPoint.Address.ToString(), endPoint.Port); // ... (login stuff) } The doc confirmed that SocketException extends Exception. The stacktrace that showed up is: TcpClient.Connect() -> DoConnect() -> timClock_TimerCallback So the exception is not thrown outside the try/catch block. Any ideas why it doesn't work?

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• gridview commandargument on buttonfield pagination used

  - by ClareBear

  Hello all, I am using c#.net I have a gridview which needs to contain a 'Use' button (appointmentId set as the commandargument). Source Code <asp:GridView ID="resultsReturned" runat="server" AllowPaging="True" AutoGenerateColumns="False" EnableSortingAndPagingCallbacks="True" OnPageIndexChanged="resultsReturned_PageIndexChanged" onrowcommand="resultsReturned_RowCommand"> <Columns> <asp:BoundField DataField="UserAppointmentId" HeaderText="App ID" /> <asp:BoundField DataField="UserBookingName" HeaderText="Booking Name" /> <asp:TemplateField> <ItemTemplate> <asp:Button runat="server" ID="UseButton" Text="Use" CommandName="Use" CommandArgument="UserAppointmentId" /> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> Code-Behind protected void resultsReturned_RowCommand(object sender, GridViewCommandEventArgs e) { if (e.CommandName == "Use") { correctAppointmentID.Value = (e.CommandArgument.ToString()); } } This is used for the pagination: private void BindAppointments() { var results = appointmentRepos.GetBookingIdBySearchCriteria(catgoryid, resultsReturned.PageIndex * resultsReturned.PageSize, -1); resultsReturned.DataSource = results; resultsReturned.DataBind(); } I am binding the appointments to the gridview within the PageLoad/search_Click This is the error I am receiving: Callbacks are not supported on TemplateField because some controls cannot update properly in a callback. Turn callbacks off on 'resultsReturned'. Thanks in advance for any help Clare

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• Can't download pdf with java

  - by gedemagt

  I'm trying to download a file from http://aula.au.dk/main/document/document.php?action=download&id=%2F%D8velsesvejledning+2012.pdf but it dosen't appear to be a pdf, when i try downloading it with this code import java.io.*; import java.net.*; public class DownloadFile { public static void download(String address, String localFileName) throws IOException { URL url1 = new URL(address); byte[] ba1 = new byte[1024]; int baLength; FileOutputStream fos1 = new FileOutputStream(localFileName); try { // Contacting the URL System.out.print("Connecting to " + url1.toString() + " ... "); URLConnection urlConn = url1.openConnection(); // Checking whether the URL contains a PDF if (!urlConn.getContentType().equalsIgnoreCase("application/pdf")) { System.out.println("FAILED.\n[Sorry. This is not a PDF.]"); } else { try { // Read the PDF from the URL and save to a local file InputStream is1 = url1.openStream(); while ((baLength = is1.read(ba1)) != -1) { fos1.write(ba1, 0, baLength); } fos1.flush(); fos1.close(); is1.close(); } catch (ConnectException ce) { System.out.println("FAILED.\n[" + ce.getMessage() + "]\n"); } } } catch (NullPointerException npe) { System.out.println("FAILED.\n[" + npe.getMessage() + "]\n"); } } } Can you help me out here?

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• Android - ListActivity, add Header and Footer view

  - by Victor

  I'm using ListActivity, listview. listView = getListView(); just working perfectly. I added footer view as LayoutInflater inflater = getLayoutInflater(); listView.addFooterView( inflater.inflate( R.layout.footer, null ), null, false); and everything was shiny but ugly, so i wanted to add this footer view (which contains only 1 edittext and only 1 button ) to header of listView as LayoutInflater inflater = getLayoutInflater(); listView.addHeaderView( inflater.inflate( R.layout.footer, null ), null, false); and suddenly everything goes wrong, and i get RuntimeException immediately. Suspended(exception RuntimeException) ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord, Intent) ActivityThread.access$2200(ActivityThread, Activity$ActiviyRecord, Intent), so on.. Why is it throws exception ? What is different between addFooterView and addHeaderView, and how can i add Header to ListActivity ? UPDATE So as you can read in comments, my logcat still doesn't work, but i just tried next at this moment: } catch(Exception e){ Writer result = new StringWriter(); PrintWriter printWriter = new PrintWriter(result); e.printStackTrace(printWriter); String error = result.toString(); } and afterward i put breakpoint, and i can read error in expressions section. it said : java.lang.IllegalStateException: Cannot add header view to list -- setAdapter has already been called. it was instructive for all of us. After change sort of commands, it works perferctly.

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