不运行combobox（ajaxcontroltoolkit）的selectedindexchanged方法 [英] Method selectedindexchanged of combobox (of ajaxcontroltoolkit) don't be run

问题描述

你好



为什么不运行combobox（Ajaxcontroltoolkit）的方法SelectedIndexChanged？



谢谢



我尝试了什么：



i不知道我该怎么做才能解决问题。





help

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

推荐答案

就像标准的ASP.NET DropDownList 服务器控件一样，您需要将 AutoPostBack 设置为 True 触发 SelectedIndexChanged 事件。这是一个简单的例子：



ASPX：

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:

<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>

后面的代码：

CODE BEHIND:

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

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