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  • How to fix the flickering in User controls.

    - by Royson
    In my application i am constantly moving from one control to another. I have created no. of user controls, but during navigation my controls gets flicker. it takes 1 or 2 sec to update. I tried to set this SetStyle(ControlStyles.OptimizedDoubleBuffer, true); or SetStyle(ControlStyles.UserPaint, true); SetStyle(ControlStyles.AllPaintingInWmPaint, true); SetStyle(ControlStyles.DoubleBuffer, true); but it didn't help... Each control has same background image with different controls. So what is the solution for it.. Thanks.

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  • Problem with layout of control when dynamically creating winform and controls for the Form

    - by Ashwani Roy
    I get this response from a web service call. Something like this <Response> <Control1 type = "DropdownList" value= "USA,UK,Sweden,UAE"/> <Control2 type = "Textbox" value= "Contries"/> <Control3 type = "Button" value= "None"> </Response> Based on this I de-serialize it into List<Controls>. Now I need to be able to dynamically create a winform based on these controls. My problem is the layout. I want to be able to create them nicely separated (If possible vertically aligned) in batches of lets say 5.So If I need 15 controls I have 3 columns and 5 rows. What would be best way to achieve this? I know that I can use the inbuilt positioning properties like top, width etc., but maybe someone out there has done something similar in a better way.

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  • C Builder TForm not allocated or created properly all its controls

    - by ergey
    Hi, I would know how i can check that all the controls on the form is created and initialized. I have form i am showing when user presses the 'update' button. It have only TProgressBar control. The handle is not NULL for this control and at random stages it can or can't set the Position/Max values. When i set TProgressBar-Max value to some integer it remains 0 after. So the question is: 1) How to really create the form and all controls on it (i am currently using just Form-Show() method, which as i can check calls the constructor) 2) How to check that all controls on the form is created and PAINTED (showed) Thanks

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  • should i lisense 3rd party controls?

    - by jhon
    some of you will say that this post is not programming related, i think it is! i developed a WebApplication that uses several 3rd party controls using asp.net (c#). i did not buy any license for the 3rd party controls that i am using because i am a freelancer and the controls are too much expensive for me to buy. i already sold the application to several mini-companies that don't care about the license issue. so my question: is it possible that i get sued or caught because of this crime? if yes, then how can they know who am i?

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  • Should I license 3rd party controls?

    - by jhon
    some of you will say that this post is not programming related, i think it is! i developed a WebApplication that uses several 3rd party controls using asp.net (c#). i did not buy any license for the 3rd party controls that i am using because i am a freelancer and the controls are too much expensive for me to buy. i already sold the application to several mini-companies that don't care about the license issue. so my question: is it possible that i get sued or caught because of this crime? if yes, then how can they know who am i?

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  • Accessing controls created dynamically (c#)

    - by Aliens
    In my code behind (c#) I dynamically created some RadioButtonLists with more RadioButtons in each of them. I put all controls to a specific Panel. What I need to know is how to access those controls later as they are not created in .aspx file (with drag and drop from toolbox)? I tried this: foreach (Control child in panel.Controls) { Response.Write("test1"); if (child.GetType().ToString().Equals("System.Web.UI.WebControls.RadioButtonList")) { RadioButtonList r = (RadioButtonList)child; Response.Write("test2"); } } "test1" and "test2" dont show up in my page. That means something is wrong with this logic. Any suggestions what could I do?

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  • Brightness controls not adjusting the brightness in ubuntu 10.10 64 bit on hp dm3t notebook

    - by user26768
    I picked up an hp dm3t laptop with intel HD graphics and installed ubuntu 10.10 64 bit on it. It works great -- the only problem is that the brightness controls don't work. The brightness is always at full. When I try to adjust it down, the indicator graphic indicates that it's going down but the actual brightness doesn't change. Is there anything that I can try to make this work? I'd really appreciate any help.

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  • Exporting WPF DataGrid to a text file in a nice looking format. Text file must be easy to read.

    - by Andrew
    Hi, Is there a simple way to export a WPF DataGrid to a text file and a .csv file? I've done some searching and can't see that there is a simple DataGrid method to do so. I have got something working (barely) by making use of the ItemsSource of the DataGrid. In my case, this is an array of structs. I do something with StreamWriters and StringBuilders (details available) and basically have: StringBuilder destination = new StringBuilder(); destination.Append(row.CreationDate); destination.Append(seperator); // seperator is '\t' or ',' for csv file destination.Append(row.ProcId); destination.Append(seperator); destination.Append(row.PartNumber); destination.Append(seperator); I do this for each struct in the array (in a loop). This works fine. The problem is that it's not easy to read the text file. The data can be of different lengths within the same column. I'd like to see something like: 2007-03-03 234238423823 823829923 2007-03-03 66 99 And of course, I get something like: 2007-03-03 234238423823 823829923 2007-03-03 66 99 It's not surprising giving that I'm using Tab delimiters, but I hope to do better. It certainly is easy to read in the DataGrid! I could of course have some logic to pad short values with spaces, but that seems quite messy. I thought there might be a better way. I also have a feeling that this is a common problem and one that has probably been solved before (hopefully within the .NET classes themselves). Thanks.

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  • How to take screenshots of WPF applications in correct size and content

    - by Thomas W.
    I usually take screenshots of single windows via the built-in key combination Alt+Print. Unfortunately this does not work well for more and more applications - all of them are WPF applications. Usually the screen shots have at least one of the following properties: the screenshot is larger than expected and contains parts of the screen around the actual window the screenshot has the correct size but includes parts of other windows, e.g. the Windows task bar. Of course the task bar might be in front of the window, but taking screen shots of "normal" programs works fine. How do I take screenshots of WPF application which are correct in size and content? I'd like to avoid the extra effort of checking all the screenshots for correctness, reproducing the situation, taking them again in case of issues or repairing/faking them manually in any pixel manipulation program (e.g. Paint.NET). I observe this on Windows 7 x64 SP 1, all official updates installed, but it might apply to other Windows versions as well (not tested yet). .NET 4.5 is installed. The application itself might only need the built-in .NET 3.5.1. It's reproducible on a virtual machine with the same settings. Examples: Screenshot of an application running in maximized mode. The screen shot includes parts of the task bar. Screenshot of a progress dialog which is behind the task bar. The screenshot also includes the task bar, while it doesn't for non WPF applications.

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  • Xaml not WPF

    - by xan
    I am interested in using Xaml with expression blend for creating user interfaces in an application. However, because of the limitations of the target architecture, I cannot use WPF or C#. So, what I am interested in is in any examples / existing projects or advice from anyone who has experiance of this technology on the use of Xaml in it's "Pure" form as a specification language not tied to WPF. Specific questions: 1) Is it possible to use Blend + Xaml without the WPF elements, or without C# backing classes? 2) Are there any other implementations of Xaml parsers etc. which use different architectures, and can they work with blend or similar tools. 3) Are there alternative editor / designer tools which can help in this situation? I am aware of the MyXaml and MycroXaml projects, and have found a lot of resources on the web about Xaml, but 99% of it relates directly to WPF. This is fine for understanding the concepts of Xaml, but doesn't help with the implimentation I need. Many thanks!

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  • WPF Databinding- Not your fathers databinding Part 1-3

    - by Shervin Shakibi
    As Promised here is my advanced databinding presentation from South Florida Code camp and also Orlando Code camp. you can find the demo files here. http://ssccinc.com/wpfdatabinding.zip Here is a quick description of the first demos, there will be 2 other Blogposting in the next few days getting into more advance databinding topics.   Example00 Here we have 3 textboxes, The first textbox mySourceElement Second textbox has a binding to mySourceElement and Path= Text <Binding ElementName="mySourceElement" Path="Text"  />   Third textbox is also bound to the Text property but we use inline Binding <TextBlock Text="{Binding ElementName=mySourceElement,Path=Text }" Grid.Row="2" /> Here is the entire XAML     <Grid  >           <Grid.RowDefinitions >             <RowDefinition Height="*" />             <RowDefinition Height="*" />             <RowDefinition Height="*" />         </Grid.RowDefinitions>         <TextBox Name="mySourceElement" Grid.Row="0"                  TextChanged="mySourceElement_TextChanged">Hello Orlnado</TextBox>         <TextBlock Grid.Row="1">                        <TextBlock.Text>                 <Binding ElementName="mySourceElement" Path="Text"  />             </TextBlock.Text>         </TextBlock>         <TextBlock Text="{Binding ElementName=mySourceElement,Path=Text }" Grid.Row="2" />     </Grid> </Window> Example01 we have a slider control, then we have two textboxes bound to the value property of the slider. one has its text property bound, the second has its fontsize property bound. <Grid>      <Grid.RowDefinitions >          <RowDefinition Height="40px" />          <RowDefinition Height="40px" />          <RowDefinition Height="*" />      </Grid.RowDefinitions>      <Slider Name="fontSizeSlider" Minimum="5" Maximum="100"              Value="10" Grid.Row="0" />      <TextBox Name="SizeTextBox"                    Text="{Binding ElementName=fontSizeSlider, Path=Value}" Grid.Row="1"/>      <TextBlock Text="Example 01"                 FontSize="{Binding ElementName=SizeTextBox,  Path=Text}"  Grid.Row="2"/> </Grid> Example02 very much like the previous example but it also has a font dropdown <Grid>      <Grid.RowDefinitions >          <RowDefinition Height="20px" />          <RowDefinition Height="40px" />          <RowDefinition Height="40px" />          <RowDefinition Height="*" />      </Grid.RowDefinitions>      <ComboBox Name="FontNameList" SelectedIndex="0" Grid.Row="0">          <ComboBoxItem Content="Arial" />          <ComboBoxItem Content="Calibri" />          <ComboBoxItem Content="Times New Roman" />          <ComboBoxItem Content="Verdana" />      </ComboBox>      <Slider Name="fontSizeSlider" Minimum="5" Maximum="100" Value="10" Grid.Row="1" />      <TextBox Name="SizeTextBox"      Text="{Binding ElementName=fontSizeSlider, Path=Value}" Grid.Row="2"/>      <TextBlock Text="Example 01" FontFamily="{Binding ElementName=FontNameList, Path=Text}"                 FontSize="{Binding ElementName=SizeTextBox,  Path=Text}"  Grid.Row="3"/> </Grid> Example03 In this example we bind to an object Employee.cs Notice we added a directive to our xaml which is clr-namespace and the namespace for our employee Class xmlns:local="clr-namespace:Example03" In Our windows Resources we create an instance of our object <Window.Resources>     <local:Employee x:Key="MyEmployee" EmployeeNumber="145"                     FirstName="John"                     LastName="Doe"                     Department="Product Development"                     Title="QA Manager" /> </Window.Resources> then we bind our container to the that instance of the data <Grid DataContext="{StaticResource MyEmployee}">         <Grid.RowDefinitions>             <RowDefinition Height="*" />             <RowDefinition Height="*" />             <RowDefinition Height="*" />             <RowDefinition Height="*" />             <RowDefinition Height="*" />         </Grid.RowDefinitions>         <Grid.ColumnDefinitions >             <ColumnDefinition Width="130px" />             <ColumnDefinition Width="178*" />         </Grid.ColumnDefinitions>     </Grid> and Finally we have textboxes that will bind to that textbox         <Label Grid.Row="0" Grid.Column="0">Employee Number</Label>         <TextBox Grid.Row="0" Grid.Column="1" Text="{Binding Path=EmployeeNumber}"></TextBox>         <Label Grid.Row="1" Grid.Column="0">First Name</Label>         <TextBox Grid.Row="1" Grid.Column="1" Text="{Binding Path=FirstName}"></TextBox>         <Label Grid.Row="2" Grid.Column="0">Last Name</Label>         <TextBox Grid.Row="2" Grid.Column="1" Text="{Binding Path=LastName}" />         <Label Grid.Row="3" Grid.Column="0">Title</Label>         <TextBox Grid.Row="3" Grid.Column="1" Text="{Binding Path=Title}"></TextBox>         <Label Grid.Row="4" Grid.Column="0">Department</Label>         <TextBox Grid.Row="4" Grid.Column="1" Text="{Binding Path=Department}" />

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  • How To: Filter as you type RadGridView inside RadComboBox for WPF and Silverlight

    Ive made small example on how to place RadGridView inside editable RadComboBox and filter the grid items as you type in the combo:   The easiest way to place any UI element in RadComboBox is to create single RadComboBoxItem and define desired Template: <telerikInput:RadComboBox Text="{Binding Text, Mode=TwoWay}" IsEditable="True" Height="25" Width="200"> <telerikInput:RadComboBox.Items> <telerikInput:RadComboBoxItem> <telerikInput:RadComboBoxItem.Template> <ControlTemplate> <telerikGrid:RadGridView x:Name="RadGridView1" ShowGroupPanel="False" CanUserFreezeColumns="False" RowIndicatorVisibility="Collapsed" IsReadOnly="True" IsFilteringAllowed="False" ItemsSource="{Binding Items}" Width="200" Height="150" SelectedItem="{Binding SelectedItem, Mode=TwoWay}"> </telerikGrid:RadGridView> </ControlTemplate> </telerikInput:RadComboBoxItem.Template> </telerikInput:RadComboBoxItem> </telerikInput:RadComboBox.Items> </telerikInput:RadComboBox> Now you can create small view model and bind ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • WPF MenuItem hiding (2 replies)

    Hi, I would like to hide selected MenuItem on Delete key press without closing the menu. My markup is: Menu MenuItem Header &quot;Menu&quot; MenuItem Header &quot;First&quot; KeyDown &quot;MenuItem KeyDown&quot;/ MenuItem Header &quot;Second&quot; KeyDown &quot;MenuItem KeyDown&quot;/ MenuItem Header &quot;Third&quot; KeyDown &quot;MenuItem KeyDown&quot;/ /MenuItem /Menu where event handler is: private void MenuItem KeyDown(object sender, KeyEventArgs e) { if (e.Key...

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  • Implementing logical paging with RadDataPager for WPF and Silverlight

    Following the great series about RadDataPager started by Rossen and Pavel, today I’m going to show you how to implement logical paging. We are going to implement alphabetical paging similar to this ASP.NET AJAX Grid Demo. As you may already know, the key to the heart of the RadDataPager is the IPagedCollectionView interface. You can create your own implementations of this interface and implement any custom logic for paging you want. This is exactly what we are going to do in this article. Introducing PagedCollectionViewBase and LogicallyPagedCollectionView<T> If you have looked at IPagedCollectionView interface you may have found out that it is not a trivial interface to implement. It has 5 methods, 6 properties and 2 events – total number of members to implement 13. To ease any further implementation of the paging interface we are going to create a base class that will have most of the ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Bitmap Effects In WPF - Part III

    In previous article we saw remaining three effects DropShadow, Bevel and Emboss. In this article we will see how to group effects, and we will see how we can achieve the effects with triggers.

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  • WPF Applications &ndash; Handling the Unhandled

    - by David Totzke
    Instead of just letting your application crash, you can attach a method to the DispatcherUnhandledExceptionEventHandler and one to the AppDomain.Current.UnhandledException.  You wire these up in the code behind of your application which by default is App.xaml.cs.  You can log these errors or throw up a message Don Box and tell the user what happened.  Then you shut down the app gracefully.  You shut it down because something bad happened that you weren’t expecting and at this point there is no guarantee as to the state of the stack or memory or anything really.  All bets are off. If, on the other hand, the method for the UnhandledException is empty and the method for the DispatcherUnhandledEventHandler ends up in a call to a method called LogError() and the LogError() method is FUCKING EMPTY, and you just swallow the exceptions and keep on running, then, not so much.  I spent nearly a day trying to track down a bug that would have been obvious had something been logged or if it just crashed.  It’s my own fault I suppose.  I knew these were hooked up.  I just never suspected that there wouldn’t be any implementation at all.  Live and learn. Customs Man at Heathrow: Anything to declare, Sir? Jekyll and Hyde: Man has not evolved an inch from the slime that spawned him. Customs Man at Heathrow: Very Good, Sir. I tend to agree. Dave Just because I can…

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  • WPF MenuItem hiding (2 replies)

    Hi, I would like to hide selected MenuItem on Delete key press without closing the menu. My markup is: Menu MenuItem Header &quot;Menu&quot; MenuItem Header &quot;First&quot; KeyDown &quot;MenuItem KeyDown&quot;/ MenuItem Header &quot;Second&quot; KeyDown &quot;MenuItem KeyDown&quot;/ MenuItem Header &quot;Third&quot; KeyDown &quot;MenuItem KeyDown&quot;/ /MenuItem /Menu where event handler is: private void MenuItem KeyDown(object sender, KeyEventArgs e) { if (e.Key...

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