i have a register form & in that form i have a 2 textboxes
for entering name&age.my doubt is that how can i provide
error message like "invalid entry" when user enter a
invalid name/age(eg:user enter name as #%%%##daff,and age
as 1000.)in that textboxes.I want code.
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Answer Posted / rajeev kumar varshney
char[] SpecialChars = "#%".ToCharArray();
string text=TextBox1.Text;
int indexOf = text.IndexOfAny(SpecialChars);
if(indexOf != -1)
{
Page.ClientScript.RegisterStartupScript("this.getType(),"a","<script>alert('Please do not enter % or # in name');</script>");
}
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