TextBox更改选择文本

Question

I have in TextBox with value of time of my audio. It looks like this: "00:00:00.000" it's format hh:mm:ss.fff , where fff = miliseconds.

I need to do in my ViewModel that when I click on hours or minutes or seconds I can change only these values which I select, but cannot remove : or . . Length of hours, minutes and seconds must be max 2 numbers each one and miliseconds = 3 numbers.

Can someone help me to do this? Thanks a lot.

EDITED: I would like make textbox works like "change time" in Windows 7

Answer 1

您只需要MaskedTextBox，否则您应该使用期望函数创建一个用户控件