ประยุกต์เอานะครับ

 

 

DataTable Table = new DataTable();
    DataRow Row;
    DataColumn Column;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Page.IsPostBack == false)
        {
            Column = new DataColumn();
            Column.ColumnName = "Name";
            Table.Columns.Add(Column);
            Column = new DataColumn();
            Column.ColumnName = "Age";
            Table.Columns.Add(Column);
            Row = Table.NewRow();
            Row["Name"] = "A";
            Table.Rows.Add(Row);
            Row = Table.NewRow();
            Row["Name"] = "B";
            Table.Rows.Add(Row);
            GridView1.DataSource = Table;
            GridView1.DataBind();
        }
    }

    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        Table = new DataTable();
        Table = getData();
        // จากนั้นเอา DataTable ที่ได้ไปทำการเซฟ
        foreach (DataRow dr in Table.Rows)
        {
            Response.Write(dr["Name"]+"<br/>");
            Response.Write(dr["Age"]+"<br/>");
        }
        ///
    }
    private DataTable getData()
    {
        DataTable DT = new DataTable(); 
        DataRow DR;
        string[] strCol = { "Name", "Age" };
        foreach (string str in strCol)
        {
            if (!DT.Columns.Contains(str))
            {
                DT.Columns.Add(str);
            }
        }
        foreach (TableRow tRow in GridView1.Rows)
        {           
            DR = DT.NewRow();
           
            foreach (string str in strCol) 
            {                 
                 switch (str) 
                 { 
                  case "Name":
                      DR[str] = (string)((Label)tRow.FindControl(str)).Text; 
                      break; 
                  case "Age":
                      string a = (string)((TextBox)tRow.FindControl(str)).Text;
                      DR[str] = (string)((TextBox)tRow.FindControl(str)).Text; 
                      break;                 
                 } 
            }
            DT.Rows.Add(DR);
        } 
        return DT;
     }