CODEWITHSUNDEEP
c#.netwpf
FPGA
FPGA

Reputation: 3875

partially editable string in a textbox control

is there a way to allow editing a string partially in c# and wpf textbox? somthing , if the contents of the TextBox were for example

"http://xxxx.xxx/xx/path?param1=xxx&param2=xxx"

the x can be replaced with whatever length but any thing else is constant and cannot be edited in the textbox, any way to achive such thing?

Upvotes: 1

Views: 392

Answers (1)

Sheridan
Sheridan

Reputation: 69985

There are two relevant events that you can handle on the TextBox; the PreviewKeyDown and the PreviewTextInput events. By handling these two events, you will have complete control over what the user can and can't edit in the TextBox. Of course you will need to work out the logic inside, but the event handlers are the tool to enable you to do what you want:

private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
    // Do your text filtering here using e.Key and e.Handled
}

private void TextBox_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
    // Do your text filtering here using e.Text and e.Handled
}

Upvotes: 2

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