Going to a specific link on dropdown list item selection - ASP.NET WebForms

Question

Hi, I added a drop down list in web forms asp.net c#. I double clicked and added this code. Selecting "Length Calculator" should redirect them to another web form. But when I test it, it's not working. But the "Response.Redirect" code works for a button perfectly. Pls help!

  protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)  
        {  
            if (DropDownList1.SelectedValue == "Length Calculator")  
            {  
                Response.Redirect("Length Converter.aspx");  
            }  
        }  

Image for the dropdown list items

Answer 1

Hi @Hemanth B ,
I suggest you could check if you run the method of SelectedIndexChanged. Do you have add AutoPostBack="true" in the dropdownlist?
I have created a test and it works.Just like this:

 <asp:DropDownList ID="DropDownList1" runat="server" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged" AutoPostBack="true">  
                <asp:ListItem Value="0" Text="--Select--"></asp:ListItem>  
                <asp:ListItem Value="Length Calculator" Text="Length Calculator"></asp:ListItem>  
            </asp:DropDownList>  

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)  
        {  
            if (DropDownList1.SelectedValue == "Length Calculator")  
            {  
                Response.Redirect("2175764.aspx");  
            }  
        }  

Best regards,
Yijing Sun

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