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c#wpftextbox

C# - Restrict value entered to between 0.0 to 1.0 in a textbox

I am new to C# and WPF. I have a textbox in my WPF application and I want to limit the value entered by user in the textbox between 0.0 and 1.0. How do I do that?

Any help would be really helpful.

Solution

  • Something like this might work for you, as you will also get the value:

    double valueEntered;
if (!double.TryParse(textBoxName.Text, out valueEntered)
    // value is not a valid double
    return;
else
    if (valueEntered < 0 || valueEntered > 1)
        // value is valid
        return;
    else
        // value is not valid
        return;

    For a better implementation you should show us the XAML and the code-behind of your Window.