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i want to show error message in vb.net when i did' t fill the necessary fields?

i m working in windows application for vb.net...

i have 4 fields in my application..if i did't fill any data in that 4 fields i want to show error like ..please enter necessary fields..i dono how to check whether the field is filled or empty..

2 Replies

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pandi s19y ago
If you are using textbox, use

if TextBox1.Text.Trim = String.Empty Then 'or TextBox1.Text.Trim =""

your code..

end if

errorprovider is also there.. you can use it
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Jan Montano19y ago
what do you mean by fields? are you referring to database field? or just plain variables? Are you using textboxes for input?
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