Question

有没有办法在asp.net中为<selec>进行onChange事件？

我试过了

protected void Status_Change(object sender, EventArgs e)

编辑：问题：

代码背后的代码：

protected void Status_SelectedIndexChanged(object sender, EventArgs e)
{
    this.Label1.Text = "ok";
}

HTML：

<form id="form2" runat="server">
    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
    <br />
    <br />
    <select id="Status" name="Status" class="regis" style="width:170px" onselectedindexchanged="Status_SelectedIndexChanged">
        <option value="0">1</option>
        <option value="1">2</option>
    </select>
</form>

为什么它不起作用？ tnx的帮助：D

Answer 1

请添加runat="server"，如下所示：

 <select id="Status" name="Status" class="regis" style="width:170px" onselectedindexchanged="Status_SelectedIndexChanged" runat="server">

Answer 2

<asp:DropDownList ID="ddlselect" runat="server" AutoPostBack="True" 
        onselectedindexchanged="ddlselect_Changed">
    </asp:DropDownList>

在代码背后

protected void ddlselect_Changed(object sender, EventArgs e)
{

}

Answer 3

替换

 <select id="Status" name="Status" class="regis" style="width:170px" onselectedindexchanged="Status_SelectedIndexChanged">
<option value="0">1</option>
<option value="1">2</option>
</select>

通过

<asp:DropDownList ID="Status" runat="server" Width="200px" onselectedindexchanged="Status_SelectedIndexChanged">
       <asp:ListItem Value="0">1</asp:ListItem>
        <asp:ListItem Value="1">2</asp:ListItem>
</asp:DropDownList>

select属性的onChange事件

3 个答案: