The GridView control is the successor to the DataGrid and extends it in a number of ways. In GridView control, you can place images between your gridview rows data. In the previous lesson you already saw how to place blank row between gridview rows.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="400px"
        onrowdatabound="GridView1_RowDataBound"  onrowcreated="GridView1_RowCreated">
            <Columns>
                  <asp:BoundField DataField="stor_id" HeaderText="Store ID" />
                  <asp:BoundField DataField="ord_num" HeaderText="Order No." />
                  <asp:BoundField DataField="title_id" HeaderText="Title ID" />
                  <asp:BoundField DataField="qty" HeaderText="Quantity" ItemStyle-HorizontalAlign="Right"/>
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html>
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
public partial class _Default : System.Web.UI.Page
{
    int storid = 0;
    int rowIndex = 1;
    protected void Page_Load(object sender, EventArgs e)
    {
        SqlDataAdapter adapter = new SqlDataAdapter();
        DataSet ds = new DataSet();
        int i = 0;
        string sql = null;
        string connetionString = "Data Source=.;Initial Catalog=pubs;User ID=sa;Password=zen412";
        sql = "select  distinct top 14 stor_id,ord_num,title_id,qty from sales group by stor_id,ord_num,title_id,qty";
        SqlConnection connection = new SqlConnection(connetionString);
        connection.Open();
        SqlCommand command = new SqlCommand(sql, connection);
        adapter.SelectCommand = command;
        adapter.Fill(ds);
        adapter.Dispose();
        command.Dispose();
        connection.Close();
        GridView1.DataSource = ds.Tables[0];
        GridView1.DataBind();
    }
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            storid = Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "stor_id").ToString());
        }
    }
    protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
        bool newRow = false;
        if ((storid > 0) && (DataBinder.Eval(e.Row.DataItem, "stor_id") != null))
        {
            if (storid != Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "stor_id").ToString()))
                newRow = true;
        }
        if ((storid > 0) && (DataBinder.Eval(e.Row.DataItem, "stor_id") == null))
        {
            newRow = true;
            rowIndex = 0;
        }
        if (newRow)
        {
            AddNewRow(sender, e);
        }
    }
    public void AddNewRow(object sender, GridViewRowEventArgs e)
    {
        GridView GridView1 = (GridView)sender;
        GridViewRow NewTotalRow = new GridViewRow(0, 0, DataControlRowType.DataRow, DataControlRowState.Insert);
        NewTotalRow.Font.Bold = true;
        NewTotalRow.BackColor = System.Drawing.Color.Aqua;
        TableCell HeaderCell = new TableCell();
        HeaderCell.Height = 10;
        HeaderCell.HorizontalAlign = HorizontalAlign.Center ;
        HeaderCell.ColumnSpan = 4;
        System.Web.UI.WebControls.Image img = new System.Web.UI.WebControls.Image();
        string imageUrl = "bubble.png";
        img.ImageUrl = imageUrl;
        HeaderCell.Wrap = false;
        HeaderCell.Controls.Add(img);
        NewTotalRow.Cells.Add(HeaderCell);
        GridView1.Controls[0].Controls.AddAt(e.Row.RowIndex + rowIndex, NewTotalRow);
        rowIndex++;
    }
}
 
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