I have a drop down list values All ,None, DNA and a textbox called Rate
If ALL or DNA is Selected
How do I set the required Validator to Require a value for the rate textbox
<asp:TextBox ID="rate" runat="server"></asp:TextBox>
</h2>
<p>
.
<asp:DropDownList ID="Drop_part" runat="server" onchange="test(this);" >
<asp:ListItem>None</asp:ListItem>
<asp:ListItem>All</asp:ListItem>
<asp:ListItem Selected>DNA</asp:ListItem>
</asp:DropDownList>
</p>
...
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