Answer / vijay

required field valodator is used to check where a browser
has entered a value in atextbox or not.

Answer / smriti

Hi,
We can add the code in page_load

If Me.RadioButton1.Checked = True Then
Button1.CausesValidation = True
Else
If Me.RadioButton2.Checked = True Then
Me.Button1.CausesValidation = False
End If
End If

Answer / yogesh sharma

Set both radio buttons AutoPostBack property to true.

and following code in page_load:

if (RadioButtonNo.Checked == true)
{
this.Button1.CausesValidation = false;
}
else
{
this.Button1.CausesValidation = true;
}

Answer / vijay

Set causes validation on the button to false. Add a custom
javascript function to the onclick event of that button. In
the javascript function check whether the radio button is
checked or not then. If checked call ValidatorEnable
(regValidatorId, true) and then call Page_ClientValidate()
function.

Answer / prakash

Required Field Validator does not depend upon any server
control either it is enable or disable.Means if radio
button1 is enable and radiobutton2 is disable at same time
then u press button then by default validation control
fired also in vice-versa case

Answer / ranga

Required validator checks for TextBox empty or not..

so to solve this problem

RequiredField validator--->properties..>validationGroup:sbmt
Button --->properties..>validationGroup:sbmt

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