i have created a gridview to show multiple data? but it's not working?

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XML

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSource="sqldread2"></asp:GridView>

C#

String selQuery = "SELECT Id FROM MapDataImage WHERE Source='" + TextBox1.Text + "';";
        {

            SqlCommand scmd = new SqlCommand(selQuery, con);

            con.Open();

            SqlDataReader sqldread = scmd.ExecuteReader();

            sqldread.Read();
            Dbid = (int)sqldread["Id"];
            Label4.Text = Convert.ToString(Dbid);
            sqldread.Dispose();
                if (Dbid != null)
                {
                 String QueryStr = "SELECT * FROM User_Images WHERE Id='" + Dbid + "'";
                    //String QueryStr = "SELECT * FROM User_Images GROUP BY Id HAVING ( COUNT(*) > 1 )";
                 scmd1 = new SqlCommand(QueryStr, con);
                 scmd1.CommandType = CommandType.Text;
                 scmd1.Connection = con;
                    
                    SqlDataReader sqldread2 = scmd1.ExecuteReader();
                    while (sqldread2.Read())
                    {
                        Context.Response.BinaryWrite((byte[])sqldread2["Image"]);
                        Context.Response.ContentType = "image/jpg";

                        al.Add(sqldread2);
                        sDatAdp.SelectCommand = scmd1;

                        GridView1.DataSource = sqldread2;
                        GridView1.DataBind();
                    }
                    sqldread2.Dispose();
                }

here i pass those images to gridview, but how can i view those............
the thing is i want to select all the items which related to the ID.
so for that is it my sql query is okay?
please someone check weather it's wrong or not?

example

Scenario

let say i have a database 1

[id] [name]
1 john
2 ann

if my textbox value equals to john.... it will get id from that.
so id is 1

then it will select all the images related to that particular Id from database 2

database 2

[Id] [Image]
1 image 1
2 image 2
1 image 3
1 image 4
.............

so output will be

[Id] [Image]
1 image 1
1 image 3
1 image 4

please someone help me..... i tried to do this so many times?

Posted 6-Jul-13 18:26pm

promod madushan

Updated 6-Jul-13 18:36pm

v3

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promod madushan 10-Jul-13 10:44am

Please some one tell me how to view those images at once?

1 solution

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Zafar A khan · Answer 1 · 2013-07-06T19:05:00

create a template field inside the grid then place another inside the template field then bind the by finding it in rowdatabound event (i-e)

C#

<asp:GridView ID="GridView1" OnRowDataBound="GridView1_RowDataBound" runat="server" AutoGenerateColumns="False" DataSource="sqldread2">
<Columns>
<asp:TemplateField visible="False">
<ItemTemplate><asp:label ID="lblID" runate="Server" Text='<%#Eval("Id")%>' visible="False" /></ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete">
                            <ItemTemplate>                               
                              <asp:GridView ID="InnerGrid" runat="Server" AutoGenerateColumns="false">
<Columns>
    <asp:TemplateField HeaderText="images">
<ItemTemplate>
<asp:Image run="server" ID="Image1" ImageUrl='<%#Bind("SomeField")%>' width="250px" Hieght="200px"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
                            </ItemTemplate>
                        </asp:TemplateField>
<Columns>
</asp:GridView>

// code behind
protected void GridView1_RowDataBound(object sender,GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label lblID=e.Row.FindControl("lblID") as Label;
GridView grd=e.Row.FindControl("InnerGrid") as GridView;
if(lblID!=null && grd!=null)
{
String QueryStr = "SELECT * FROM User_Images WHERE Id='" + lblID.Text+ "'";
SqlDataAdapter da=new SqlDataAdapter(QueryStr,yourconnection);
DataTable dt=new DataTable();
da.Fill(dt);
// Request to Database and bind the innerGrid
grd.DataSource=dt;
grd.DataBind();
}

}
}