SyntaxFix
Write A Post
Hire A Developer
Questions
There are some cases, when textbox will not handle enter key. I think it may be when you have accept button set on form. In that case, instead of KeyDown event you should use textbox1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
KeyDown
textbox1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)