I am a rookie programmer,
I am trying to create a requiredfield validator using the custom control available in .Net. I know about the inbuilt validators, but the case is that I need to create custom server side validators, therefore I dont want to mix the inbuilt client side validation controls that come with dotnet and the custom server side validators that I need to build. This is why I need to create a custom serverside textbox required field validator. But all efforts failed.THis is what I tried.

protected void e_serverValidate(................................. ... args)
{
if(TextBox1.Text.Trim()=="")
args.IsValid=false;
else
args.isValid=true;
}
Please how am I suppose to write the appriopriate code . Csharp, thank you