Hello everybody,

I have 3 textboxs (asp.net control) in my aspx page.

I want to check data enter these 3 textbox, but only compel enter 1 of 3 textboxs. i.e when second textbox entered data then first and third textbox can entered or do not entered.

How do I do that?

Thank so much,

Best regard.

Minh Phan

Put the textcanged eventhandler as the same for all the three textboxes.
Then in that put in the following code :

if not textbox1.text is nothing then
        textbox2.text = ""
        textbox2.enabled = false
        textbox3.text = ""
        textbox3.enabled = false
end if

Similarly for textboxes 2 and 3

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