Method selectedindexchanged of combobox (of ajaxcontroltoolkit) don't be run

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hello

why method SelectedIndexChanged of combobox (of Ajaxcontroltoolkit) don't be run?

thanks

What I have tried:

i don't know what should i do for solve problem.

help

Posted 20-Nov-18 3:58am

Member 13522501

Updated 20-Nov-18 11:45am

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Comments

F-ES Sitecore 20-Nov-18 10:17am

Probably because you're not using it correctly.

Bryian Tan 20-Nov-18 12:39pm

did you set AutoPostBack="True" ?

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Vincent Maverick Durano · Answer 1 · 2018-11-20T11:46:00

Just like the standard ASP.NET DropDownList server control, you need to set AutoPostBack to True to trigger the SelectedIndexChanged event. Here's a quick example:

ASPX:

C#

<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</asp:ToolkitScriptManager>
<asp:ComboBox ID="ComboBox1" runat="server" 
            DropDownStyle="DropDown" 
            AutoCompleteMode="None"
            CaseSensitive="false"
            RenderMode="Block"
            AppendDataBoundItems="true"
            AutoPostBack="True"
            OnSelectedIndexChanged="Combobox1_SelectedIndexChanged"
            >
              <asp:ListItem Text="One"></asp:ListItem>
              <asp:ListItem Text="Two"></asp:ListItem>
              <asp:ListItem Text="Three"></asp:ListItem>
</asp:ComboBox>

CODE BEHIND:

C#

void Combobox1_SelectedIndexChanged(object sender, EventArgs e)
{
        Response.Write("You've selected: " + ComboBox1.SelectedItem.Text);
}