Restrict Clipboard Shortcuts in TextBox in Silverlight 3


Introduction

In this article we will see how we can restrict Clipboard shortcuts such as CTRL+C, CTRL+X, and CTRL+V in Silverlight 3 for TextBox Control.

Creating Silverlight Project

Fire up Visual Studio 2008 and create a new Silverlight 3 Project. Name it as RestrictCBShortcutSL3.


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Let's have one or more TextBoxes that will fulfill our sample application.

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Now for disabling Clipboard shortcuts such as Ctrl+C, Ctrl+X, and Ctrl+V we need to have Custom TextBox control.

So Create a class as CustomTextBox.cs .


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Now inherit TextBox class to it.
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Now we will have a boolean property that will decide whether CTRL key is pressed.
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To override default shortcuts we need to override the base methods such as OnKeyDown and OnkeyUp.

Add the following override methods.

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Now go back to the XAML code behind and add the Namespace (Your application's namespace) as follows:


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After adding the Namespace Change the TextBox Control that you need to restrict the Clipboard shortcuts. In our case we will do it for the About User TextBox.

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Initialize the IsControlKeyDown property to False.

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Now we are ready to test our application.


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Try pressing Ctrl+C/Ctrl+X/Ctrl+V the clipboard shortcuts are handled.

Hope this article helps.

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