Question

i have a vb.net form button that go through a jquery validation before excude a function in the code behind , actually in either ways if the validation is true or false the function stopped and never call the vb.net function how can i make the it proceed to the code behind ?

vb.net form (textbox and button )

      <asp:TextBox ID="ToCc" runat="server"></asp:TextBox>
    <asp:Button ID="emailSend" runat="server" Text="send" />

jquery :

   $("#<%=emailSend.ClientID %>").click(function(){
          if($("#<%=ToCc.ClientID %>").val() == ""){
            alert("this fienld can't be empty") ; 
            return false ; 
          } else{
    return true ; 
}

         });

the email click vb function is

 Protected Sub emailSend_Click(ByVal sender As Object, ByVal e As EventArgs) Handles 

    emailSend.Click

   MsgBox("do any thing ") 

   End Sub

Answer 1

You haven’t assigned your emailSend_Click method as the event handler for the button. Secondly, you can use the RequiredFieldValidator to accomplish your validation goals.

Try <asp:Button ID="emailSend" runat="server" Text="send" onclick="emailSend_Click" />

Additionally, remove the statement emailSend.Click from your code behind. You are already in the click event handler.