本文举个在gridview控件中再嵌套一个gridview控件的方法，具体代码如下：
*.aspx 代码 很简单

<asp:GridView ID="GridView1" runat="server" Width="100%" OnRowDataBound="GridView1_RowDataBound">
</asp:GridView>

*.aspx.cs 多余的代码已经去了.

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            GridView1.DataSource = CreateList("钢铁");
            GridView1.DataBind();
        }
    }

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowIndex > -1)
        {
            foreach (TableCell cell in e.Row.Cells)
            {
                cell.Controls.Add(GetGridView(cell.Text));
            }
        }
    }

    //第二个GridView
    private GridView GetGridView(string Text)
    {
        GridView gv = new GridView();
        gv.ID = string.Concat(Text, "id");
        gv.DataSource = CreateList(Text);
        gv.DataBind();
        gv.HeaderRow.Visible = false;
        gv.Font.Size = FontUnit.Parse("12px");
        gv.Width = Unit.Parse("100%");
        //gv.RowDataBound += event;  再往下嵌套.....
        return gv;
    }

    //记录集

    public ICollection CreateList(string Text)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add(new DataColumn("一季度", typeof(System.String)));
        dt.Columns.Add(new DataColumn("二季度", typeof(System.String)));

        DataRow dr;
        for (int i = 0; i < 10; i++)
        {
            Random r = new Random();
            dr = dt.NewRow();
            dr[0] = i.ToString() + "月";
            dr[1] = r.Next(99).ToString() + "%";
            dt.Rows.Add(dr);
        }
        return new System.Data.DataView(dt);
    }

该方法还可以自己进一步扩展成为多级嵌套