Triple click in TextBox does not select all text

[batzen]

• .NET Core Version: All
• Windows version: 1903
• Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes

Problem description:
Triple clicking in a TextBox does not select all text in the TextBox.

Actual behavior:
Triple clicking in a TextBox does not select all text in the TextBox.

Expected behavior:
Triple clicking in a TextBox should select all text.

Minimal repro:

• Create a window containing a TextBox
• Write some text into the TextBox
• Triple click with the mouse

[lindexi]

I do not think it a good feature that it change the behavior. Because I use Triple clicking in a TextBox does not select all text in the TextBox. feature to write my bussiness code. o(╥﹏╥)o

If your code be merged, I should change my exist code...

[weltkante]

Sooner or later WPF needs to add new input gestures and there is always the risk that some application already was using a previously unused input gesture for its own purpose. I think its a good start to think about how to deal with that here, while triple click is not a standard Windows gesture "select all text" is a common enough interpretation of that gesture to support it by default. Maybe it can be implemented by default and disabled by a switch if someone was already using this gesture for his own purpose. Or if you think that too risky, disable it by default and let people opt in to triple clicks.

[mdtauk]

Triple clicking is the expected behaviour in Windows 10, as used by UWP XAML.
Win32's Edit control only has single click to focus, and double click to select the word the cursor is over.

[miloush]

On the other hand, triple click in Word selects the paragraph, not all text.

I would prefer the controls to be consistent with native controls, and I think this case in particular might be quite impactful compatibility issue.

[batzen]

It behaves that way for a rich textbox. The change i made does not change the behavior for controls with rich content.

[batzen]

@grubioe any news on this?

[grubioe]

@fabiant3 can provide the latest status.