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check value when end edit cell in datagrid wpf c#

in cheque details datagrid when i want to add a new:(dep, branch, account, idshek, munt, date)in a column "idshek" when end edit i want to check:- check if exist in my database. >> I know that...

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WPF ContextMenu Style

Hello, I need advice on how to achieve a similar style context menu, as shown. Thanks a lot. 

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facing Problem regarding Remote Connection to Database...

Hello Every one,I am new in C# and i created a POS previously, now i want to improve it and database can be placed at any server and others can access the database through remoting, i need help in...

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Stop a StoryBoard

Hi,I have a story boards with some animations and a repeat behaviour which is set to forever.I want to stop my storyboard at a point in my programm,but it doesn't work.I created a function/object  and...

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Error: Unable to add event handler (button) (c#)

I double click on the button, and it displays the error message.Do I need to add another class?

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How to create a custom cursor which change is color due to the given...

Hey,i've just created a custom .cur file and need one think more. The cursor don't change its color from black to white like any given cursor. I've the cursor over a black background, he doesn't switch...

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JumpTask argument not working when it starts with @ symbol in Windows 10

When I add an JumpTask to the JumpList of my WPF application everything works fine, except when the arguments string of the JumpTask starts with the @ symbol. While debugging I can see the arguments...

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begin edit cell in datagrid without double click mouse to edit

my code in Grid_PreviewKeyDown event:var uie = e.OriginalSource as UIElement; if (e.Key == Key.Enter) { e.Handled = true; uie.MoveFocus( new TraversalRequest( FocusNavigationDirection.Next)); } then...

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General questions about deriving from Window

I've created a class that derives from Window, in my solution I have the new class and a demo/test app.I've gotten most of what I want to do - all of the override logic is coded in the class, the only...

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How to synchronize multiple datagrids with single scrollbar?

Hello,I am having five datagrids inside a stackpanel. First datagrid contains five columns and remaining four datagrid contains single column.How can I synchronize these datagrids with only one...

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How to highlight date in a textblock from viewmodel using MVVM Light

i want to highlight the foreground or background color of the dates based on current date. How can i do it in my viewmodel? what are the codes i can use to highlight the currrrent date in the...

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Why use await and RunAsync instead of just starting a normal thread when...

In the Accelerometer class specification The way they get the values they use this:asyncprivatevoid ReadingChanged(object sender, AccelerometerReadingChangedEventArgs e) {await...

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UserControl

Hi I'm new to programming, I have make a form (Form1) and an UserControl (UserControl1) Form1 having a panel and a buttonand button set to call UserControl1 into panel, this is the code using System;...

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Enable treeview scrollbar when treeview is disabled

Hi ,Is there any option to enable scrollbar in treeview ,when i disable treeview using stylesPls let me know regarding this,Thanks in advanceEfforts may fail but don't fail to take effort...

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Unable to transfer data between WPF main window and hosted winform user control

Hello everybody,this question is continuous to my previous question.so after that question with some testing, I came to know that, I can add winform user control to WPF window.But the Problem is in...

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Property value is not set and call back method is not invoked - Windows store...

Hi All,I have a dependency property of type object with default value 0.0 and a property changed call back method for it(custom control).When I set it's value (two way binding nullable int property) as...

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Webbrowser control requires JavaScript

Hi,We've a window which uses WPF web browser control in it. It suppose to show SSO login page. However it's displaying message saying " Java Script Required" as shown in the attached image.The same SSO...

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need help to run files from unknown sources in windows 8.1

i have downloaded R language setup in pc but it is not running as it says you "this app can't run on your pc,unknown publisher".please help.

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Different behavior in Visual Studio 2012 and 2013 verses 2010 on Color Property

I have a custom WPF Control that has a System.Drawing.Color property. The control works in Visual Studio 2010. for example if you select White the XAML generated is Property="White" but in 2012 or...

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UI Response on heavy loading Data from Database

Hi All,i am looking to find out solution if i am using data loading into grid from data base my screen take 20 seconds with total 300 records and 50 columns +.Store proc it self taking 7 seconds and my...

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