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• App cannot start at all in Android 2.2 (Froyo)

  - by Roland Lim

  Dear fellow Android developers & Google Engineers, My app has been running okay until the recent Froyo update. After installing the Android 2.2 SDK, I can compile my code without any errors. However, when I run it, it just force closes: Here's the log: 05-23 10:15:13.463: DEBUG/AndroidRuntime(423): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<< 05-23 10:15:13.463: DEBUG/AndroidRuntime(423): CheckJNI is ON 05-23 10:15:14.193: DEBUG/AndroidRuntime(423): --- registering native functions --- 05-23 10:15:15.293: DEBUG/AndroidRuntime(423): Shutting down VM 05-23 10:15:15.303: DEBUG/dalvikvm(423): Debugger has detached; object registry had 1 entries 05-23 10:15:15.333: INFO/AndroidRuntime(423): NOTE: attach of thread 'Binder Thread #3' failed 05-23 10:15:16.003: DEBUG/AndroidRuntime(431): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<< 05-23 10:15:16.013: DEBUG/AndroidRuntime(431): CheckJNI is ON 05-23 10:15:16.273: DEBUG/AndroidRuntime(431): --- registering native functions --- 05-23 10:15:17.392: INFO/ActivityManager(59): Starting activity: Intent { act=android.intent.action.MAIN cat= [android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.handyapps.easymoney/.EasyMoney } 05-23 10:15:17.602: DEBUG/AndroidRuntime(431): Shutting down VM 05-23 10:15:17.662: DEBUG/dalvikvm(431): Debugger has detached; object registry had 1 entries 05-23 10:15:17.742: INFO/AndroidRuntime(431): NOTE: attach of thread 'Binder Thread #3' failed 05-23 10:15:17.912: INFO/ActivityManager(59): Start proc com.handyapps.easymoney for activity com.handyapps.easymoney/.EasyMoney: pid=438 uid=10035 gids={1006, 1015} 05-23 10:15:19.032: DEBUG/AndroidRuntime(438): Shutting down VM 05-23 10:15:19.032: WARN/dalvikvm(438): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): FATAL EXCEPTION: main 05-23 10:15:19.062: ERROR/AndroidRuntime(438): java.lang.RuntimeException: Unable to instantiate application com.handyapps.easymoney.EasyMoney: java.lang.ClassCastException: com.handyapps.easymoney.EasyMoney 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.ActivityThread$PackageInfo.makeApplication (ActivityThread.java:649) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.ActivityThread.handleBindApplication (ActivityThread.java:4232) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.ActivityThread.access$3000(ActivityThread.java:125) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2071) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.os.Handler.dispatchMessage(Handler.java:99) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.os.Looper.loop(Looper.java:123) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.ActivityThread.main(ActivityThread.java:4627) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at java.lang.reflect.Method.invokeNative(Native Method) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at java.lang.reflect.Method.invoke(Method.java:521) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:868) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at dalvik.system.NativeStart.main(Native Method) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): Caused by: java.lang.ClassCastException: com.handyapps.easymoney.EasyMoney 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.Instrumentation.newApplication(Instrumentation.java:957) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.Instrumentation.newApplication(Instrumentation.java:942) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): at android.app.ActivityThread$PackageInfo.makeApplication (ActivityThread.java:644) 05-23 10:15:19.062: ERROR/AndroidRuntime(438): ... 11 more 05-23 10:15:19.082: WARN/ActivityManager(59): Force finishing activity com.handyapps.easymoney/.EasyMoney 05-23 10:15:19.592: WARN/ActivityManager(59): Activity pause timeout for HistoryRecord{450018f0 com.handyapps.easymoney/.EasyMoney} //////////////THE ANDROID MANIFEST FILE//// <uses-permission android:name="android.permission.READ_PHONE_STATE"/> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-feature android:name="android.hardware.camera" /> <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="4" /> <application android:icon="@drawable/icon" android:name="@string/app_name" android:label="@string/app_name" android:debuggable="false"> <activity android:name=".EasyMoney" android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar" android:launchMode="singleTask" android:clearTaskOnLaunch="true"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".TranList" android:label="@string/app_name" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".TranEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".BillReminderEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".BillReminderList" android:launchMode="singleTop" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".BudgetList" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".BudgetEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".Search" android:theme="@style/CustomDialogTheme" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".PasscodeEntry" android:theme="@style/CustomDialogTheme" android:windowSoftInputMode="stateAlwaysHidden" android:screenOrientation="portrait"/> <activity android:name=".AccountList" android:theme="@android:style/Theme.Light.NoTitleBar"> </activity> <activity android:name=".AccountEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".UserSettingsEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".CurrencySettingsEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".DisplaySettingsEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".BackupSettingsEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".CategoryList" android:theme="@android:style/Theme.Light.NoTitleBar" /> <activity android:name=".CategoryEdit" android:theme="@android:style/Theme.Light.NoTitleBar" android:windowSoftInputMode="stateAlwaysHidden"/> <activity android:name=".ExpenseByCategory" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".BalanceReport" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".MonthlyExpenseReport" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".MonthlyIncomeReport" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".MonthlyCashflowReport" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".PhotoList" android:theme="@android:style/Theme.Light.NoTitleBar" /> <activity android:name=".ExpenseByPayee" android:theme="@android:style/Theme.Light.NoTitleBar"/> <activity android:name=".ExpenseBySubCategory" android:theme="@android:style/Theme.Light.NoTitleBar"/> <service android:name="StartAlarm_Service"> <intent-filter> <action android:name="com.handyapps.easymoney.StartAlarm_Service" /> </intent-filter> </service> <service android:name=".AlarmService_Service" android:process=":remote" /> <receiver android:name="StartupIntentReceiver"> <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" /> <category android:name="android.intent.category.HOME" /> </intent-filter> </receiver> <receiver android:name=".WidgetProvider" android:label="@string/widget_name"> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> </intent-filter> <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget" /> </receiver> <receiver android:name=".WidgetProvider" android:label="@string/widget_name"> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> <data android:scheme="easymoney_widget" /> </intent-filter> <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget" /> </receiver> <receiver android:name=".WidgetProvider"> <intent-filter> <action android:name="com.handyapps.easymoney.WIDGET_CONTROL" /> <data android:scheme="easymoney_widget" /> </intent-filter> </receiver> </application> The main startup class is com.handyapps.easymoney.EasyMoney. I placed a breakpoint at the start of the onCreate() method but I discovered it didn't even reach there. Somehow, the application just couldn't be loaded in Android 2.2... but it works perfectly fine for all the previous Android versions. Been trying to find the cause for the past 2 days but am totally stumped!! Any help will be greatly appreciated!!!! Thanks!! Roland

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• Multiple ToggleButton image with different highlight image in WPF

  - by Ryan

  I am very new to WPF and needed some pointers as to why this is not working correctly. I am trying to make a maximize button that will change to a restore button when clicked. I thought a toggle button with 2 different styles that would be changed in the code behind could work. I am first trying to get the maximize button working and have ran into a problem. I get the error 'System.Windows.Controls.Image' is not a valid value for the 'System.Windows.Controls.Image.Source' property on a Setter. in my xaml. I seem to be not understanding something completely. Any help would be most helpful :) Ryan <Style x:Key="Maximize" TargetType="{x:Type ToggleButton}"> <Style.Resources> <Image x:Key="MaxButtonImg" Source="/Project;component/Images/maxbutton.png" /> <Image x:Key="MaxButtonHighlight" Source="/Project;component/Images/maxbutton-highlight.png" /> </Style.Resources> <Setter Property="ContentTemplate"> <Setter.Value> <Image> <Image.Style> <Style TargetType="{x:Type Image}"> <Setter Property="Source" Value="{DynamicResource MaxButtonImg}"/> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Source" Value="{DynamicResource MaxButtonHighlight}"/> </Trigger> </Style.Triggers> </Style> </Image.Style> </Image> </Setter.Value> </Setter> </Style> <ToggleButton Name="MaxButton" Width="31" Height="31" BorderThickness="0" Click="MaxButton_Click" Margin="0,0,10,0" Tag="Max" Style="{DynamicResource Maximize}" /> My code behind would do something simple like this: private void MaxButton_Click(object sender, RoutedEventArgs e) { ToggleButton tg = (ToggleButton)sender; if ( tg.IsChecked == true) { tg.Style = (Style)FindResource("Restore"); this.WindowState = WindowState.Maximized; } else { tg.Style = (Style)FindResource("Maximize"); this.WindowState = WindowState.Normal; } }

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• IE8 CSS selector selects, but does not apply the style.

  - by Dan

  This is making me want to kill myself. I have some really simple CSS to style my input objects: input, button { border: 1px solid #c66600; background-color: white; color: #7d212f; font-family: "Eras Light ITC", Tahoma, sans; } But I don't like the ugly border it puts around radio buttons, so I use a selector to kill the border: input[type=radio] { border: none; } You can probably guess what browsers this works in and which ONE it does not work in. What's funny is when I press F12 to launch the excellent developer tools in IE8 it actually tells me that the style of the radio buttons has been overridden to 'none' just like I asked it to do, but the border remains on the radio button objects. I have tried a variety of semantic things, like setting the border width to 0px or the color to something insane like lime green, but it remains the originally assigned color that it got from the first style. And finally, I have tried only styling 'text' objects, in which case no style is applied to anything. Again, the browser claims to fulfill the CSS selection, but it visually does not happen. Thoughts? By the way, this is a DotNetNuke installation with generated code where I can't explicitly set the style of the radio buttons. Thanks, Dan

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• Do you have any “Family Feud” style questions and answers for a game for high school students?

  - by Ben Jakuben

  I am gathering questions and responses in math, science, and technology for a "Family Feud" style game for high school students. I am having trouble finding and thinking of questions, especially in the technology realm. Technology (programming or general tech) questions are preferred. If you have never seen the game show, "Family Feud" involves two teams trying to guess the most popular responses to questions asked to a group of 100 respondents. The team must guess all the popular responses to get the points for the question. For example, if the question is, "What are the major tags in HTML 4.0?", the responses might be: P (64 votes) DIV (16 votes) TABLE (8 votes) BLINK (4 votes)

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• ASP.NET MVC 2 Model Binding for a Collection

  - by nmarun

  Yes, my yet another post on Model Binding (previous one is here), but this one uses features presented in MVC 2. How I got to writing this blog? Well, I’m on a project where we’re doing some MVC things for a shopping cart. Let me show you what I was working with. Below are my model classes: 1: public class Product 2: { 3: public int Id { get; set; } 4: public string Name { get; set; } 5: public int Quantity { get; set; } 6: public decimal UnitPrice { get; set; } 7: } 8:   9: public class Totals 10: { 11: public decimal SubTotal { get; set; } 12: public decimal Tax { get; set; } 13: public decimal Total { get; set; } 14: } 15:   16: public class Basket 17: { 18: public List<Product> Products { get; set; } 19: public Totals Totals { get; set;} 20: } The view looks as below:  1: <h2>Shopping Cart</h2> 2:   3: <% using(Html.BeginForm()) { %> 4: 5: <h3>Products</h3> 6: <% for (int i = 0; i < Model.Products.Count; i++) 7: { %> 8: <div style="width: 100px;float:left;">Id</div> 9: <div style="width: 100px;float:left;"> 10: <%= Html.TextBox("ID", Model.Products[i].Id) %> 11: </div> 12: <div style="clear:both;"></div> 13: <div style="width: 100px;float:left;">Name</div> 14: <div style="width: 100px;float:left;"> 15: <%= Html.TextBox("Name", Model.Products[i].Name) %> 16: </div> 17: <div style="clear:both;"></div> 18: <div style="width: 100px;float:left;">Quantity</div> 19: <div style="width: 100px;float:left;"> 20: <%= Html.TextBox("Quantity", Model.Products[i].Quantity)%> 21: </div> 22: <div style="clear:both;"></div> 23: <div style="width: 100px;float:left;">Unit Price</div> 24: <div style="width: 100px;float:left;"> 25: <%= Html.TextBox("UnitPrice", Model.Products[i].UnitPrice)%> 26: </div> 27: <div style="clear:both;"><hr /></div> 28: <% } %> 29: 30: <h3>Totals</h3> 31: <div style="width: 100px;float:left;">Sub Total</div> 32: <div style="width: 100px;float:left;"> 33: <%= Html.TextBox("SubTotal", Model.Totals.SubTotal)%> 34: </div> 35: <div style="clear:both;"></div> 36: <div style="width: 100px;float:left;">Tax</div> 37: <div style="width: 100px;float:left;"> 38: <%= Html.TextBox("Tax", Model.Totals.Tax)%> 39: </div> 40: <div style="clear:both;"></div> 41: <div style="width: 100px;float:left;">Total</div> 42: <div style="width: 100px;float:left;"> 43: <%= Html.TextBox("Total", Model.Totals.Total)%> 44: </div> 45: <div style="clear:both;"></div> 46: <p /> 47: <input type="submit" name="Submit" value="Submit" /> 48: <% } %> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Nothing fancy, just a bunch of div’s containing textboxes and a submit button. Just make note that the textboxes have the same name as the property they are going to display. Yea, yea, I know. I’m displaying unit price as a textbox instead of a label, but that’s beside the point (and trust me, this will not be how it’ll look on the production site!!). The way my controller works is that initially two dummy products are added to the basked object and the Totals are calculated based on what products were added in what quantities and their respective unit price. So when the page loads in edit mode, where the user can change the quantity and hit the submit button. In the ‘post’ version of the action method, the Totals get recalculated and the new total will be displayed on the screen. Here’s the code: 1: public ActionResult Index() 2: { 3: Product product1 = new Product 4: { 5: Id = 1, 6: Name = "Product 1", 7: Quantity = 2, 8: UnitPrice = 200m 9: }; 10:   11: Product product2 = new Product 12: { 13: Id = 2, 14: Name = "Product 2", 15: Quantity = 1, 16: UnitPrice = 150m 17: }; 18:   19: List<Product> products = new List<Product> { product1, product2 }; 20:   21: Basket basket = new Basket 22: { 23: Products = products, 24: Totals = ComputeTotals(products) 25: }; 26: return View(basket); 27: } 28:   29: [HttpPost] 30: public ActionResult Index(Basket basket) 31: { 32: basket.Totals = ComputeTotals(basket.Products); 33: return View(basket); 34: } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } That’s that. Now I run the app, I see two products with the totals section below them. I look at the view source and I see that the input controls have the right ID, the right name and the right value as well. 1: <input id="ID" name="ID" type="text" value="1" /> 2: <input id="Name" name="Name" type="text" value="Product 1" /> 3: ... 4: <input id="ID" name="ID" type="text" value="2" /> 5: <input id="Name" name="Name" type="text" value="Product 2" /> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } So just as a regular user would do, I change the quantity value of one of the products and hit the submit button. The ‘post’ version of the Index method gets called and I had put a break-point on line 32 in the above snippet. When I hovered my mouse on the ‘basked’ object, happily assuming that the object would be all bound and ready for use, I was surprised to see both basket.Products and basket.Totals were null. Huh? A little research and I found out that the reason the DefaultModelBinder could not do its job is because of a naming mismatch on the input controls. What I mean is that when you have to bind to a custom .net type, you need more than just the property name. You need to pass a qualified name to the name property of the input control. I modified my view and the emitted code looked as below: 1: <input id="Product_Name" name="Product.Name" type="text" value="Product 1" /> 2: ... 3: <input id="Product_Name" name="Product.Name" type="text" value="Product 2" /> 4: ... 5: <input id="Totals_SubTotal" name="Totals.SubTotal" type="text" value="550" /> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Now, I update the quantity and hit the submit button and I see that the Totals object is populated, but the Products list is still null. Once again I went: ‘Hmm.. time for more research’. I found out that the way to do this is to provide the name as: 1: <%= Html.TextBox(string.Format("Products[{0}].ID", i), Model.Products[i].Id) %> 2: <!-- this will be rendered as --> 3: <input id="Products_0__ID" name="Products[0].ID" type="text" value="1" /> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } It was only now that I was able to see both the products and the totals being properly bound in the ‘post’ action method. Somehow, I feel this is kinda ‘clunky’ way of doing things. Seems like people at MS felt in a similar way and offered us a much cleaner way to solve this issue. The simple solution is that instead of using a Textbox, we can either use a TextboxFor or an EditorFor helper method. This one directly spits out the name of the input property as ‘Products[0].ID and so on. Cool right? I totally fell for this and changed my UI to contain EditorFor helper method. At this point, I ran the application, changed the quantity field and pressed the submit button. Of course my basket object parameter in my action method was correctly bound after these changes. I let the app complete the rest of the lines in the action method. When the page finally rendered, I did see that the quantity was changed to what I entered before the post. But, wait a minute, the totals section did not reflect the changes and showed the old values. My status: COMPLETELY PUZZLED! Just to recap, this is what my ‘post’ Index method looked like: 1: [HttpPost] 2: public ActionResult Index(Basket basket) 3: { 4: basket.Totals = ComputeTotals(basket.Products); 5: return View(basket); 6: } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } A careful debug confirmed that the basked.Products[0].Quantity showed the updated value and the ComputeTotals() method also returns the correct totals. But still when I passed this basket object, it ended up showing the old totals values only. I began playing a bit with the code and my first guess was that the input controls got their values from the ModelState object. For those who don’t know, the ModelState is a temporary storage area that ASP.NET MVC uses to retain incoming attempted values plus binding and validation errors. Also, the fact that input controls populate the values using data taken from: Previously attempted values recorded in the ModelState["name"].Value.AttemptedValue Explicitly provided value (<%= Html.TextBox("name", "Some value") %>) ViewData, by calling ViewData.Eval("name") FYI: ViewData dictionary takes precedence over ViewData's Model properties – read more here. These two indicators led to my guess. It took me quite some time, but finally I hit this post where Brad brilliantly explains why this is the preferred behavior. My guess was right and I, accordingly modified my code to reflect the following way: 1: [HttpPost] 2: public ActionResult Index(Basket basket) 3: { 4: // read the following posts to see why the ModelState 5: // needs to be cleared before passing it the view 6: // http://forums.asp.net/t/1535846.aspx 7: // http://forums.asp.net/p/1527149/3687407.aspx 8: if (ModelState.IsValid) 9: { 10: ModelState.Clear(); 11: } 12:   13: basket.Totals = ComputeTotals(basket.Products); 14: return View(basket); 15: } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } What this does is that in the case where your ModelState IS valid, it clears the dictionary. This enables the values to be read from the model directly and not from the ModelState. So the verdict is this: If you need to pass other parameters (like html attributes and the like) to your input control, use 1: <%= Html.TextBox(string.Format("Products[{0}].ID", i), Model.Products[i].Id) %> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Since, in EditorFor, there is no direct and simple way of passing this information to the input control. If you don’t have to pass any such ‘extra’ piece of information to the control, then go the EditorFor way. The code used in the post can be found here.

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• SharePoint 2010 Hosting :: How to Customize SharePoint 2010 Global Navigation

  - by mbridge

  Requirements - SharePoint Foundation or SharePoint Server 2010 site - SharePoint Designer 2010 Steps 1. The first step in my process was to download from codeplex a starter masterpage http://startermasterpages.codeplex.com/ . 2. Once you downloaded the starter master page, open up your SharePoint site in SharePoint Designer 2010 and on the left in the “Site Objects “ area click on the folder “All Files” and drill down to catalogs >> masterpages . Once you are in the Masterpage folder copy and paste the _starter.master into this folder. 3. The first step in the customization process is to create your custom style sheet. To create your custom style sheet, click on the “all Files” folder and click on “Style Library.” Right click in the style library section and choose Style sheet. Once the style sheet is created, rename it style.css. Now open the style sheet you created in SharePoint Designer. 4. In this next step you will copy and paste the SharePoint core styles for the global navigation into your custom style sheet. Copy and paste the css below into the style sheet and save file .s4-tn{ padding:0px; margin:0px; } .s4-tn ul.static{ white-space:nowrap; } .s4-tn li.static > .menu-item{ /* [ReplaceColor(themeColor:"Dark2")] */ color:#3b4f65; white-space:nowrap; border:1px solid transparent; padding:4px 10px; display:inline-block; height:15px; vertical-align:middle; } .s4-tn ul.dynamic{ /* [ReplaceColor(themeColor:"Light2")] */ background-color:white; /* [ReplaceColor(themeColor:"Dark2-Lighter")] */ border:1px solid #D9D9D9; } .s4-tn li.dynamic > .menu-item{ display:block; padding:3px 10px; white-space:nowrap; font-weight:normal; } .s4-tn li.dynamic > a:hover{ font-weight:normal; /* [ReplaceColor(themeColor:"Light2-Lighter")] */ background-color:#D9D9D9; } .s4-tn li.static > a:hover { /* [ReplaceColor(themeColor:"Accent1")] */ color:#44aff6; text-decoration:underline; } 5. Once you created the style sheet, go back to the masterpage folder and open the _starter.master file and in the Customization category click edit file. 6. Next, when the edit file opens make sure you view it in split view. Now you are going to search for the reference to our custom masterpage in the code. Make sure you are scrolled to the top in the code section and press “ctrl f” on the key board. This will pop up the find and replace tool. In the” find what field”, copy and paste and then click find next. 7. Now, in the code replace You have now referenced your custom style sheet in your masterpage. 8. The next step is to locate your Global Navigation control, make sure you are scrolled to the top in the code section and press “ctrl f” on the key board. This will pop up the find and replace tool. In the” find what field”, copy and paste ID="TopNavigationMenuV4” and then click find next. Once you find ID="TopNavigationMenuV4” , you should see the following block of code which is the global navigation control: ID="TopNavigationMenuV4" Runat="server" EnableViewState="false" DataSourceID="topSiteMap" AccessKey="" UseSimpleRendering="true" UseSeparateCss="false" Orientation="Horizontal" StaticDisplayLevels="1" MaximumDynamicDisplayLevels="1" SkipLinkText="" CssClass="s4-tn" 9. In the global navigation code above you should see CssClass="s4-tn" . As an additional step you can replace "s4-tn" your own custom name like CssClass="MyNav" . If you can the name of the CSS class make sure you update your custom style sheet with the new name, example below: .MyNav{ padding:0px; margin:0px; } .MyNav ul.static{ white-space:nowrap; } 10. At this point you are ready to brand your global navigation. The next step is to modify your style.css with your customizations to the default SharePoint styles. Have fun styling and make sure you save your work often. Hope it helps!!

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• Parsing tables, cells with Html agility in C#

  - by Kaeso

  I need to parse Html code. More specifically, parse each cell of every rows in all tables. Each row represent a single object and each cell represent different properties. I want to parse these to be able to write an XML file with every data inside (without the useless HTML code). This is the way I thought it out initially but I ran out of ideas: HTML: <tr> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF"> 1 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="left"> <a href="/ice/player.htm?id=8471675">Sidney Crosby</a> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="center"> PIT </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="center"> C </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 39 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 32 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 33 </td> <td class="statBox sorted" style="border-width:0px 1px 1px 0px; background-color: #E0E0E0" align="right"> <font color="#000000"> 65 </font> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 20 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 29 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 10 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 1 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 3 </td> <td class="statBox" style="border-width:0px 0px 1px 0px; background-color: #FFFFFF" align="right"> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 0 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 154 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 20.8 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 21:54 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 22.6 </td> <td class="statBox" style="border-width:0px 0px 1px 0px; background-color: #FFFFFF" align="right"> 55.7 </td> </tr> C#: using HtmlAgilityPack; using System.Data; namespace Stats { class StatsParser { private string htmlCode; private static string fileName = "[" + DateTime.Now.ToShortDateString() + " NHL Stats].xml"; public StatsParser(string htmlCode) { this.htmlCode = htmlCode; this.ParseHtml(); } public DataTable ParseHtml() { var result = new DataTable(); HtmlDocument doc = new HtmlDocument(); doc.LoadHtml(htmlCode); HtmlNode row = doc.DocumentNode.SelectNodes("//tr"); foreach (var statBox in row.SelectNodes("//td[@class='statBox']")) { System.Windows.MessageBox.Show(statBox.InnerText); } } } }

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• How do I link external style sheet to multiple pages and folders?

  - by user18681

  im building a pretty large website that will have many pages and folders. I have 1 stylesheet. How do I add the style sheet to "ALL" of these folders? I didnt have this problem before I started to put the pages in SEPERATE folders. Now that each page has its own folder it no longer reads my stylesheet unless its in the SAME folder Example, lets say I have a folder of pets, another of cars, and another of planes. I have to put my stylesheet in EACH and everyone of these folders so that I can see my site. How can I do it so that I do NOT have to put a stylesheet in each and every folder? In other words how can I get my stylesheets on the same page as my folders without having them in that folder? How can I get them to communicate while being in a different folder?

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• 3D Display Issue When Using Latest Java Runtime Versions - Patch now available...

  - by [email protected]

  Typically I focus my blog posts on Support process topics, and reserve most of the technical topics for the Support newsletter. This topic, however, warrants a quick mention in the blog since I know it's been affecting many users recently. For customers using the Client/Server Deployment of AutoVue, users that had upgraded their client Java Runtime Environment (JRE) to version 1.6.0_19 or later suddenly noticed that their 3D files were opening blank in AutoVue. This issue was due to a change in JRE version 1.6.0_19, and the AutoVue team now offers a patch to address the issue in AutoVue version 20.0.0. The patch number is 10268316, is available through the My Oracle Support portal, and is described further in KM Note 1104821.1. We'll mention it again in our next Support newsletter, and the AutoVue team will target to roll the same fix into the next available release of the product.

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• Which Game Engine to Use for an Angry Bird style game? [JAVA] [on hold]

  - by Arch1tect

  Our team is building an Angry Bird Style game, and we have only about ten days. The game is a little more complex than Angry Bird because there are two players, they each have a castle with pigs to protect(not destroy:)). And the goal is to destroy the other player's pigs. I wonder what Game Engine would help us finish this game most efficiently. We at least need a physics engine but I guess game engine is more helpful since it usually includes physics engine. Correct me if I'm wrong. (So I'm wondering which game engine I should use, if it's just physics engine, I'll use box2d) Networking may or may not be added later depend on time we have. Thanks in advance for any advice! EDIT: image looks small, I'll add one:

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• Horrorble performance using ListViews with nested objects in WPF

  - by Christian

  Hi community, like mentioned in the title I get a horrible performance if I use ListViews with nested objects. My scenario is: Each row of a ListView presents an object of the class Transaction with following attributes: private int mTransactionID; private IBTTransactionSender mSender; private IBTTransactionReceiver mReceiver; private BTSubstrate mSubstrate; private double mAmount; private string mDeliveryNote; private string mNote; private DateTime mTransactionDate; private DateTime mCreationTimestamp; private BTEmployee mEmployee; private bool mImported; private bool mDescendedFromRecurringTransaction; Each attribute can be accessed by its corresponding property. An ObservableCollection<Transaction> is bound to the ItemsSource of a ListView. The ListView itself looks like the following: </ListView.GroupStyle> <ListView.View> <GridView> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.ToSave" Width="80"> <GridViewColumnHeader Name="GVCHLoadedToSave" Style="{StaticResource ListViewHeaderStyle}">Speichern</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <CheckBox Name="CBListViewItem" IsChecked="{Binding Path=Transaction.ToSave, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></CheckBox> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.TransactionDate" Width="80"> <GridViewColumnHeader Name="GVCHLoadedDate" Style="{StaticResource ListViewHeaderStyle}">Datum</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding ElementName=DPDate, Path=Text}" Style="{StaticResource GridBlockStyle}"/> <toolkit:DatePicker Name="DPDate" Width="{Binding ElementName=GVCHDate, Path=ActualWidth}" SelectedDateFormat="Short" Style="{StaticResource GridEditStyle}" SelectedDate="{Binding Path=Transaction.TransactionDate, Mode=TwoWay}" SelectedDateChanged="DPDate_SelectedDateChanged"/> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.Sender.Description" Width="120"> <GridViewColumnHeader Name="GVCHLoadedSender" Style="{StaticResource ListViewHeaderStyle}">Von</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding Path=Transaction.Sender.Description}" Style="{StaticResource GridBlockStyle}"/> <ComboBox Name="CBSender" Width="{Binding ElementName=GVCHSender, Path=ActualWidth}" SelectedItem="{Binding Path=Transaction.Sender}" DisplayMemberPath="Description" Text="{Binding Path=Sender.Description, Mode=OneWay}" ItemsSource="{Binding ElementName=Transaction, Path=SenderList}" Style="{StaticResource GridEditStyle}"> </ComboBox> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.Receiver.Description" Width="120"> <GridViewColumnHeader Name="GVCHLoadedReceiver" Style="{StaticResource ListViewHeaderStyle}">Nach</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding Path=Transaction.Receiver.Description}" Style="{StaticResource GridBlockStyle}"/> <ComboBox Name="CBReceiver" Width="{Binding ElementName=GVCHReceiver, Path=ActualWidth}" SelectedItem="{Binding Path=Transaction.Receiver}" DisplayMemberPath="Description" Text="{Binding Path=Receiver.Description, Mode=OneWay}" ItemsSource="{Binding ElementName=Transaction, Path=ReceiverList}" Style="{StaticResource GridEditStyle}"> </ComboBox> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.Substrate.Description" Width="140"> <GridViewColumnHeader Name="GVCHLoadedSubstrate" Style="{StaticResource ListViewHeaderStyle}">Substrat</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding Path=Transaction.Substrate.Description}" Style="{StaticResource GridBlockStyle}"/> <ComboBox Name="CBSubstrate" Width="{Binding ElementName=GVCHSubstrate, Path=ActualWidth}" SelectedItem="{Binding Path=Transaction.Substrate}" DisplayMemberPath="Description" Text="{Binding Path=Substrate.Description, Mode=OneWay}" ItemsSource="{Binding ElementName=Transaction, Path=SubstrateList}" Style="{StaticResource GridEditStyle}"> </ComboBox> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.Amount" Width="80"> <GridViewColumnHeader Name="GVCHLoadedAmount" Style="{StaticResource ListViewHeaderStyle}">Menge [kg]</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding Path=Transaction.Amount}" Style="{StaticResource GridBlockStyle}"/> <TextBox Name="TBAmount" Text="{Binding Path=Transaction.Amount, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="{Binding ElementName=GVCHAmount, Path=ActualWidth}" Style="{StaticResource GridTextBoxStyle}" /> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.DeliveryNote" Width="100"> <GridViewColumnHeader Name="GVCHLoadedDeliveryNote" Style="{StaticResource ListViewHeaderStyle}">Lieferschein Nr.</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding Path=Transaction.DeliveryNote}" Style="{StaticResource GridBlockStyle}"/> <TextBox Name="TBDeliveryNote" Text="{Binding Path=Transaction.DeliveryNote, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="{Binding ElementName=GVCHDeliveryNote, Path=ActualWidth}" Style="{StaticResource GridEditStyle}" /> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.Note" Width="190"> <GridViewColumnHeader Name="GVCHLoadedNote" Style="{StaticResource ListViewHeaderStyle}">Bemerkung</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding Path=Transaction.Note}" Style="{StaticResource GridBlockStyle}"/> <TextBox Name="TBNote" Text="{Binding Path=Transaction.Note, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="{Binding ElementName=GVCHNote, Path=ActualWidth}" Style="{StaticResource GridEditStyle}" /> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn core:SortableListView.SortPropertyName="Transaction.Employee.LastName" Width="100"> <GridViewColumnHeader Name="GVCHLoadedEmployee" Style="{StaticResource ListViewHeaderStyle}">Mitarbeiter</GridViewColumnHeader> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <TextBlock Text="{Binding Path=Transaction.Employee.LastName}" Style="{StaticResource GridBlockStyle}"/> <ComboBox Name="CBEmployee" Width="{Binding ElementName=GVCHEmployee, Path=ActualWidth}" SelectedItem="{Binding Path=Transaction.Employee}" DisplayMemberPath="LastName" Text="{Binding Path=Employee.LastName, Mode=OneWay}" ItemsSource="{Binding ElementName=Transaction, Path=EmployeeList}" Style="{StaticResource GridEditStyle}"> </ComboBox> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> </GridView> </ListView.View> </ListView> As you can see in the screenshot the user got the possibility to change the values of the transaction attributes with comboboxes. Ok now to my problem. If I click on the "Laden" button the application will load about 150 entries in the ObservableCollection<Transaction>. Before I fill the collection I set the ItemsSource of the ListView to null and after filling I bind the collection to the ItemsSource once again. The loading itself takes a few milliseconds, but the rendering of the filled collection takes a long time (150 entries = about 20 sec). I tested to delete all Comboboxes out of the xaml and i got a better performance, because I don't have to fill the ComboBoxes for each row. But I need to have these comboboxes for modifing the attributes of the Transaction. Does anybody know how to improve the performance? THX

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• Is reference to bug/issue in commit message considered good practice?

  - by Christian P

  I'm working on a project where we have the source control set up to automatically write notes in the bug tracker. We simply write the bug issue ID in the commit message and the commit message is added as a note to the bug tracker. I can see only a few downsides for this practice. If sometime in the future the source code gets separated from the bug tracking software (or the reported bugs/issues are somehow lost). Or when someone is looking in the history of commits but doesn't have access to our bug tracker. My question is if having a bug/issue reference in the commit message is considered good practice? Are there some other downsides?

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• How do display checked value in checkbox on Google plus style popup box?

  - by user946742

  After reading this post on Stackoverflow Google plus popup box when hovering over thumbnail? I was inspirted to add it on my site. I managed to do so and the script adds the contacts to my database. So far awesome! However, my problem (and also appears in the example) is it does not display the "checked" value... so the user will never know if they already added them to their list or not. Is the correct way to display checked values with PHP? Here is my html code: <ul style="list-style: none;padding:2px;"> <li style="padding:5px 2px;"> <input type="checkbox" id="Friends" name="circles" value="Friends" '.$checked1.'/> Friends </li> <li style="padding:5px 2px;"> <input type="checkbox" id="Following" name="circles" value="Following" '.$checked2.'/>Following </li> <li style="padding:5px 2px;"> <input type="checkbox" id="Family" name="circles" value="Family" '.$checked3.'/> Family </li> <li style="padding:5px 2px;"> <input type="checkbox" id="Acquaintances" name="circles" value="Acquaintances" '.$checked4.'/> Acquaintances </li> </ul> And my PHP code is: if($circle_check_friends>0) { $ckecked1='checked=""'; } else if ($circle_check_following>0) { $ckecked2='checked=""'; } else if ($circle_check_family>0) { $ckecked3='checked=""'; } else if ($circle_check_acquaintances>0) { $ckecked4='checked=""'; } else if ($circle_check_friends=0) { $ckecked1=''; } else if ($circle_check_following=0) { $ckecked2=''; } else if ($circle_check_family=0) { $ckecked3=''; } else if ($circle_check_acquaintances=0) { $ckecked4=''; } Im lost because this is not giving me the result I want... i.e. for the checked values to be displayed according to the users choice. Your help is highly appreciated Thank you all in advance George

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• How can I make jQuery select an element in the style of CSS?

  - by ben

  <div id="id" class="div-style"><img id="1" class="img-style"></div> I would like to use the id attribute as a way for jQuery to select the element, and the class attribute for CSS to style it. My guess for jQuery selector ran thusly: $("#id .div-class") and $("#id .img-class") This returns the error "Selector expected"

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• Style common group of divs in one css statement.

  - by Vafello

  I have a few divs created dynamically in Javascript.I was wondering if it is possible to style them all at once. #somediv { background-color: #F2F5FC; border-style:solid; border-bottom:thin dotted #33ccff; } #somediv2 { background-color: #F2F5FC; border-style:solid; border-bottom:thin dotted #33ccff; } ...and so on (this can be even 50 divs) I would like to change this to something like: #somediv* { background-color: #F2F5FC; border-style:solid; border-bottom:thin dotted #33ccff; }

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• How to display combo box as textbox in WPF via a style template trigger?

  - by Greg R

  I would like to display a combobox drop down list as a textbox when it's set to be read only. For some reason I can't seem to bind the text of the selected item in the combo box to the textbox. This is my XAML: <Style x:Key="EditableDropDown" TargetType="ComboBox"> <Style.Triggers> <Trigger Property="IsReadOnly" Value="True"> <Setter Property="Background" Value="#FFFFFF" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="ComboBox"> <TextBox Text="{TemplateBinding SelectedItem, Converter={StaticResource StringCaseConverter}}" BorderThickness="0" Background="Transparent" FontSize="{TemplateBinding FontSize}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" FontFamily="{TemplateBinding FontFamily}" Width="{TemplateBinding Width}" TextWrapping="Wrap"/> </ControlTemplate> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style> <ComboBox IsReadOnly="{Binding ReadOnlyMode}" Style="{StaticResource EditableDropDown}" Margin="0 0 10 0"> <ComboBoxItem IsSelected="True">Test</ComboBoxItem> </ComboBox> When I do this, I get the following as the text: System.Windows.Controls.ComboBoxItem: Test I would really appreciate the help!

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• Is using Javascript/JQuery for layout and style bad practice?

  - by Renesis

  Many, but not all, HTML layout problems can be solved with CSS alone. For those that can't, JQuery (on document load) has become very popular.* As a result of its ease, many developers are quick to use JQuery or Javascript for layout and style — even without understanding whether or not the problem can be solved with CSS alone. This is illustrated by responses to questions like this one. Is this bad practice? What are the arguments for/against? Should someone who sees this in practice attempt to persuade those developers otherwise? If so, what are the best responses to arguments in favor of JQuery saying it's "so easy"? * Example: Layouts that wish to use vertical layout flow of some kind often run into dead ends with CSS alone — this would include layouts similar to Pinterest, though I'm not sure that's actually impossible with CSS.

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• How do I alter the default style of a button without WPF reverting from Aero to Classic?

  - by DanM

  I've added PresentationFramework.Aero to my App.xaml merged dictionaries, as in... <Application x:Class="TestApp.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="/PresentationFramework.Aero;component/themes/Aero.NormalColor.xaml" /> <ResourceDictionary Source="pack://application:,,,/WPFToolkit;component/Themes/Aero.NormalColor.xaml" /> <ResourceDictionary Source="ButtonResourceDictionary.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources> </Application> I'm trying to modify the default look of buttons just slightly. I put this style in my ButtonResourceDictionary: <Style TargetType="Button"> <Setter Property="Padding" Value="3" /> <Setter Property="FontWeight" Value="Bold" /> </Style> All buttons now have the correct padding and bold text, but they look "Classic", not "Aero". How do I fix this style so my buttons all look Aero but also have these minor changes? I would prefer not to have to set the Style property for every button.

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• how to text-align columns in DataGrid? (style DataGridCell)

  - by Olga

  I use WPF (C #). I use DataGrid. I want the first column is aligned with the center, the other columns are right-aligned. I have style: <Style x:Key="TextInCellCenter" TargetType="{x:Type TextBlock}" > <Setter Property="HorizontalAlignment" Value="Center"/> </Style> <Style TargetType="{x:Type DataGridCell}"> <Setter Property="HorizontalAlignment" Value="Right"/> </Style> DataGrid: <DataGrid> <DataGrid.Columns> <DataGridTextColumn ElementStyle="{StaticResource TextInCellCenter}" Binding="{Binding Path=Name}" /> <DataGridTextColumn Binding="{Binding Path=Number}" /> <DataGridTextColumn Binding="{Binding Path=Number}" /> <DataGridTextColumn Binding="{Binding Path=Number}" /> I have all the columns are right-aligned. Please tell me, how do I change the first column had a center text-alignment?

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• Is C++11 Uniform Initialization a replacement for the old style syntax?

  - by Robert Dailey

  I understand that C++11's uniform initialization solves some syntactical ambiguity in the language, but in a lot of Bjarne Stroustrup's presentations (particularly those during the GoingNative 2012 talks), his examples primarily use this syntax now whenever he is constructing objects. Is it recommended now to use uniform initialization in all cases? What should the general approach be for this new feature as far as coding style goes and general usage? What are some reasons to not use it? Note that in my mind I'm thinking primarily of object construction as my use case, but if there are other scenarios to consider please let me know.

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• Why does the javascript style property not work as expected?

  - by dramasea

  <html> <head> <style type="text/css"> #wow{ border : 10px solid red; width: 20px; height: 20px; } </style> </head> <body> <div id="wow"></div> <script> var val = document.getElementById("wow"); alert(val.style.length); </script> </body> </html> This is my code, why is val.style.length 0? Because I defined 3 properties, I expected it to be 3

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• Javascript style variables with "-" in their name aren't able to be changed?

  - by William

  Okay, so this bug has cost me quite a bit of time and embarrassment. It seems that any style variable with a - in it's name can't be modified by javascript. As seen here: <!DOCTYPE html> <html lang="en"> <head> <title>Class Test</title> <meta charset="utf-8" /> <style> body { text-align: center; background-color: #ffffff;} #box { position: absolute; left: 610px; top: 80px; height: 50px; width: 50px; background-color: #ff0000; color: #000000;} </style> <script type="text/javascript"> var box = 0; </script> </head> <body> <div id="box" ></div> <script type="text/javascript"> box = document.getElementById('box'); box.style.background-color = "#0000ff"; </script> </body> </html> The box in said example will just remain red. So how do I change a style variable with a - in it's name?

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• Is it possible to change UIBarButtonItem title and style in runtime?

  - by user262325

  Hello everyone In one project, I hope to change UIBarButtonItem and style in runtime editBarItemButton links to a UIBarButtonItem which original status are style:UIBarButtonItemStyleBordered title:Edit if I press the bar item button, it will execute the codes below: [editBarItemButton setStyle: UIBarButtonItemStyleDone]; [editTarBarItemButton setTitle:@"Done" ]; but neither the style nor title has changed. Welcome any comment Thanks interdev

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• Where, in an object oriented system should you, if at all, choose (C-style) structs over classes?

  - by Anto

  C and most likely many other languages provide a struct keyword for creating structures (or something in a similar fashion). These are (at least in C), from a simplified point of view like classes, but without polymorphism, inheritance, methods, and so on. Think of an object-oriented (or multi paradigm) language with C-style structs. Where would you choose them over classes? Now, I don't believe they are to be used with OOP as classes seem to replace their purposes, but I wonder if there are situations where they could be preferred over classes in otherwise object-oriented programs and in what kind of situations. Are there such situations?

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• Are there studies about the disadvantages of using issue tracking systems? [closed]

  - by user1062120

  I don't like issue tracking systems because: It takes too much time to describe issues in it. This discourage its usage. You create a place to keep your bugs. And if there is a place for them, people usually don't care too much about fixing a bug cause they can put it there so that someday someone can fix it (or not). With time, the bug lists gets so long that nobody can deal with it anymore, taking up a lot of our time. I prefer handling issues using post-its on a white board, face-to-face conversations and killing important bugs as soon as they appear. I don't care too much to keep track of bug history because I don't think that it is worth the overhead. Am I alone here? Are there studies (book/article/whatever) about the disadvantages (or great advantages) of using issue tracking systems?

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