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you can use on text change event of textbox,
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you can use on text change event of textbox,

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I have a formview that does an insert. &nbsp;When user inserts a duplicate key, it errors out, how can I catch this? &nbsp;Something like this?<br />
<br />
formview1.itemInserting...<wbr />....<br />
label1.text = &quot;Item already exists&quot;<br />
end sub<br />
<br />
I just can seem to find the right event.
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I have a formview that does an insert.  When user inserts a duplicate key, it errors out, how can I catch this?  Something like this?

formview1.itemInserting.......
label1.text = "Item already exists"
end sub

I just can seem to find the right event.

asp.net 2010 vb formview

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.