Bind the text field content to Ok button of RadWindow

Question

In my application built on MVVM architecture using C# & WPF, I'm using the RadWindow to prompt the user to enter the filename with Ok & Cancel options.

I want to be able to enable/disable OR visible/invisible the OK button on the basis of user input.

Ex: Filename entered -> Ok button enabled/visible

Filename empty -> Ok button disabled/invisible.

How can I acheive this behavior?

Answer 1

The Telerik RadPrompt window has a custom Template which contains a TextBox and two Buttons. To enable or disable the Button based on the input of the TextBox, you can add a Binding to the IsEnabled property of the OK Button:

                    <telerik:RadButton x:Name="OK"
                            Command="{x:Static telerik:WindowCommands.Confirm}"
                            telerikNavigation:RadWindow.ResponseButton="Accept"
                            MinWidth="70"
                            IsTabStop="True"
                            TabIndex="1"
                            HorizontalAlignment="Right"
                            telerik:LocalizationManager.ResourceKey="Ok"
                            Margin="0 10 8 8"
                            IsEnabled="{Binding ElementName=PromptTextBox,Path=Text.Length}" />