TextBox with AcceptsReturn=true

[Roar]

Hi,
I have a DataForm with an EditTemplate where I have a multiline TextBox for editing text. I need to be able to insert new lines by pressing the Return Key. But when I do that, the Dataform gets Comitted. How can I prevent the DataForm's Commit Command to fire when users press the Return key inside the TextBox?

[Yoan]

Hello,

RadDataForm has built-in keyboard navigation that executes the CommitEdit command, when "Enter" is pressed. You can override its default behavior, by using a custom command provider. You can check the Keyboard Support help article that sheds some more light on the matter. For your convenience, I have prepared a sample project which demonstrates the approach.

I hope it helps.

Regards,
Yoan
Telerik

 

 

[Roar]

Thanks, I got this working now.

Regards,
Roar Bjørndal-Rasmussen

[Johannes]

I also need parts of this in my RadDataForms so first thank you very much for the example.

I try to make some additions because what I really want is that "Enter" and "Return" do not execute the same actions. If user hits "Return" DataForm should't do anything (except insert a new line in a multiline TextBox). But if user hits "Enter" I want the RadDataForm to execute commit no matter if Focus is in a multiline TextBox or a Combobox or any other DataFormField. Is this possible?

Note: It seems that when pressing "Enter" OR "Return" args.Key is always of value "Return" which makes it impossible to differ them. Any suggestions?

[Ivan Ivanov]

Hello,

I believe that the difference between them is not distinguishable by the .Net framework. Both of the entries in the System.Windows.Input.Key enumeration have one and the same actual value.

/// <summary>The Return key. </summary>
        Return = 6,
        /// <summary>The Enter key. </summary>
        Enter = 6,

Regards,
Ivan Ivanov
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[Johannes]

Hello Ivan,

You'e right. I read some more documentation and today "Return" should be seen as the same key as "Enter". I've changed my Commit key to Ctrl + Enter/Return and that's fine. Thanks for your help.

[Gregg]

Hi Yoan,

Does your sample project solve the OP's problem? That is, does it insert a new line in the TextBox, rather than commit the DataForm, when Return/Enter key is pressed? When I apply your sample to my project, I notice that the position of the cursor in the TextBox is simply moved to the end of the text when the Return/Enter key is pressed. Nothing else happens, i.e. no new line. That behavior seems to be what you have coded in your sample:

TB.SelectionStart = TB.Text.Length;
TB.Focus();

I expected your sample to insert a new line instead. Am I missing something? How to achieve a new line in TextBox when Return/Enter key is pressed?

Thank you.

[Yoan]

Hello Gregg,

The reason for this behavior is that I had set a fixed Height for the Textbox. If you remove that setting you will be able to insert a new line on pressing the Enter key. You can check this screencast for a reference. If you need further assistance on this, do not hesitate to contact me again.

Regards,
Yoan
Telerik