i am try this code to open popup window
popup window is open but page is reload
asp:DropDownList ID="ddlname" runat="server" CssClass="textbox2" AutoPostBack="True" OnSelectedIndexChanged="ddlname_SelectedIndexChanged"></asp:DropDownList>
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ErrorMessage="*" ControlToValidate="ddlname" Display="Dynamic" Font-Size="Larger" ForeColor="Red" ValidationGroup="addp" InitialValue="--Select--"></asp:RequiredFieldValidator>
protected void ddlname_SelectedIndexChanged(object sender, EventArgs e)
{
if (ddlname.SelectedValue == "New")
{
Response.Write("<script language='javascript'>window.open('AddSupplier.aspx','Popup','width=550,height=370,left=350,top=200,resizable=no')</script>");
}
}
i also use update panel then popup window cant open....
i want open popup window without reloading current page