How do you use a custom validator? When might you want to use one?

How do you use a custom validator? When might you want to
use one?

Question Posted / raghumadhav tirunagari

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How do you use a custom validator? When might you want to use one?..

Answer / sravanthi kilari

Insert Custom Validator Control and then write the custom
function. If Other Validation Controls did't meet our
requirement then we will go to Custom Validator Control.

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How do you use a custom validator? When might you want to use one?..

Answer / pallavi

Field: <asp:textbox id="textbox1" runat="server">
<asp:CustomValidator id="valCustom" runat="server"
ControlToValidate="textbox1"
ClientValidationFunction="ClientValidate"
OnServerValidate="ServerValidate"
ErrorMessage="*This box is not valid" dispaly="dynamic">*
</asp:CustomValidator>

ClientValidationFunction is usually a javascript funtion included in the html to the user. OnServerValidate is the function that is server-side to check for validation if client does not support client-side validation.

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How do you use a custom validator? When might you want to use one?..

Answer / santosh bind

when using the complex validation like text should not contain the max 50 char

protected void cusCustom_ServerValidate(object sender, ServerValidateEventArgs e)
{
if(e.Value.Length == 10)
e.IsValid = true;
else
e.IsValid = false;
}

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