c# - customvalidator onServerValidate not firing -

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i have radio button list , text box both validation.

<asp:radiobuttonlist id="member" runat="server" repeatdirection="horizontal">     <asp:listitem>yes</asp:listitem>     <asp:listitem>no</asp:listitem> </asp:radiobuttonlist>  <asp:requiredfieldvalidator id="unionvalidator" runat="server" controltovalidate="member" errormessage="required" />  required if member == "yes"  <asp:textbox runat="server" id="union"></asp:textbox> <asp:customvalidator id="customvalidator1" runat="server" validateemptytext="true" onservervalidate="unionvalidate" errormessage="your current union required"  />

my servervalidate doesn't fire @ all.

public void unionvalidate(object source, servervalidateeventargs args) {     if (member.text == "yes" && union.text.trim() == "")         args.isvalid = false; }

are calling page.validate() method somewhere in code behind or submit button has causesvalidation set true?


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