I have a question about asp.net.
I used the RequiredFieldValidator property to verify the input.
Unlike RangeValidator, error verification was not performed dynamically.
Only after being posted back to the server can the RequiredFieldValidator be dynamically validated, do these properties have such controls?
age
<asp:TextBox ID="Age" runat="server"Text=""></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"ErrorMessage="Required"
ControlToValidate="Age"></asp:RequiredFieldValidator>
<asp: RangeValidator Id="RangeValidator1" runat="server"
ErrorMessage = "Age ranges from 0 to 15"
ControlToValidate="Age" InitialValue="Enter text"
Maximumvalue="15" MinimumValue="1" Type="Integer">
</asp:RangeValidator>
You can configure whether the validator works on the client side in the BaseValidator.EnableClientScript property.
However, the default value for this property for RequiredFieldValidator is true.Verification has been performed even if the code in the questionnaire works here, so you should check if there are any other script errors or unexpected postbacks.
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