ASP.NET网格视图-如何将动态填充的下拉列表添加到动态绑定的网格视图

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowDataBound="GridView1_RowDataBound">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:TemplateField HeaderText="Category">
            <ItemTemplate>
                <asp:DropDownList ID="DropDownList1" runat="server"></asp:DropDownList>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        // 绑定网格视图的数据源
        GridView1.DataSource = GetData();
        GridView1.DataBind();
    }
}

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // 找到下拉列表控件
        DropDownList ddlCategory = (DropDownList)e.Row.FindControl("DropDownList1");

        // 设置下拉列表的数据源并绑定
        ddlCategory.DataSource = GetCategories();
        ddlCategory.DataTextField = "CategoryName";
        ddlCategory.DataValueField = "CategoryID";
        ddlCategory.DataBind();
    }
}

private DataTable GetData()
{
    // 获取数据源
    // 这里可以根据实际情况获取数据源，可以是数据库、Web服务等
    DataTable dt = new DataTable();
    // ...
    return dt;
}

private DataTable GetCategories()
{
    // 获取下拉列表的数据源
    // 这里可以根据实际情况获取数据源，可以是数据库、Web服务等
    DataTable dt = new DataTable();
    // ...
    return dt;
}