如何使用Asp.net按钮将数据从一个网格视图添加到另一个网格视图

Question

我正在尝试在同一页面上将详细信息从一个gridview添加到另一个gridview;但是我没有看到gridview（不可见）。不确定究竟是什么原因导致因为在属性窗口中将visible设置为true。

protected void btnAssign_Click(object sender, EventArgs e)
{


    DataRow drow;
    DataTable dt = SetDataTable();
    drow = dt.NewRow();
    //GridView1.Rows.Add(1);
    int row = GridView1.Rows.Count - 1;
    drow["Customer Name"] = GridView1.Rows[row].Cells[0].Text;
    drow["Invoice #"] = GridView1.Rows[row].Cells[1].Text;
    drow["Invoice Qty"] = GridView1.Rows[row].Cells[2].Text;
    //drow["Salary"] = textBox4.Text.Trim();
    dt.Rows.Add(drow);
    BindGrid(dt);
    btnDelete.Visible = true;

}

private DataTable SetDataTable()
{
    DataTable dt = new DataTable();
    try
    {
        DataColumn dcol = new DataColumn("Customer Name", typeof(System.String));
        dt.Columns.Add(dcol);
        dcol = new DataColumn("Invoice #", typeof(System.String));
        dt.Columns.Add(dcol);
        dcol = new DataColumn("Invoice Qty", typeof(System.String));
        dt.Columns.Add(dcol);

    }
    catch (Exception ex)
    {

    }
    return dt;
}
private void BindGrid(DataTable dt)
{
    try
    {
        if (dt.Rows.Count > 0)
        {
            GridView2.DataSource = dt;

        }
        else { }
    }
    catch (Exception ex)
    {

    }
}