How do you make an event happen when text is entered into a textbox in C#

Question

I am making an EPOS and I would like continually take input from a textbox but the textbox must only take the value if it is validated and is on a list of variables.

I just need to know what event that would be on the textbox

You can take TextChanged/KeyPress/KeyDown event and compare the value with your list of variables — Daniel Abou Chleih, Oct 18 '13 at 17:09

score 2 · Accepted Answer · edited May 23 '17 at 11:50

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For validation, KeyPress event is appropriate. You can control which characters can be entered in the text box.

Here's an example: How do I make a textbox that only accepts numbers?

edited May 23 '17 at 11:50

Community

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answered Oct 18 '13 at 17:13

Jerry

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score 1 · Answer 2 · edited Oct 18 '13 at 17:16

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You can use the TextChanged event.

edited Oct 18 '13 at 17:16

Servy

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answered Oct 18 '13 at 17:11

Casey

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How do you make an event happen when text is entered into a textbox in C#

2 Answers2