ASP._aspx' does not contain a definition for 'DropDownList1_SelectedIndexChanged' and no extension method 'DropDownList1_SelectedIndexChanged' accepting a first argument of type '_aspx' could be found
my code in aspx
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" onselectedindexchanged="DropDownList1_SelectedIndexChanged">
<asp:ListItem>Device No</asp:ListItem>
<asp:ListItem>Distributor Name</asp:ListItem>
<asp:ListItem>Owner Name</asp:ListItem>
<asp:ListItem>Distributor Phone No</asp:ListItem>
<asp:ListItem>Owners Phone No</asp:ListItem>
</asp:DropDownList>
my code in aspx.cs
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (DropDownList1.SelectedValue == "Distributor Name&qu ...
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