如何在将数据源绑定到网格视图后在Gridview中显示时隐藏列

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
    <Columns>
        <asp:BoundField DataField="Column1" HeaderText="Column 1" />
        <asp:BoundField DataField="Column2" HeaderText="Column 2" Visible="False" />
        <asp:BoundField DataField="Column3" HeaderText="Column 3" />
    </Columns>
</asp:GridView>

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        // 绑定数据源到GridView
        GridView1.DataSource = GetData();
        GridView1.DataBind();

        // 显示第二列
        GridView1.Columns[1].Visible = true;
    }
}

private DataTable GetData()
{
    // 获取数据源
    DataTable dt = new DataTable();
    // 填充数据源
    // ...

    return dt;
}