need to validate textbox

how to validate textbox using errorprovider in c#

please give me reply sir

 

Hi,

You can check this

Code:

void Txt_nameValidating(object sender, System.ComponentModel.CancelEventArgs e)
{
if(txt_name.Text==string.Empty)
{
errorProvider1.SetError(txt_name,"Please Enter Name");
errorProvider2.SetError(txt_name,"");
errorProvider3.SetError(txt_name,"");
}
else
{
errorProvider1.SetError(txt_name,"");
errorProvider2.SetError(txt_name,"");
errorProvider3.SetError(txt_name,"Correct");
}
}

Thanks