Mokshasri

Urgent help needed: Gridview in asp.net 3.5 and oracle 9i

Dec 9 2009 4:32 PM

Hi Experts!
              Can anyone help me to solve this problem that I am facing with GridView in asp.net 3.5 ?

              Following is the code: .aspx page:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="displaytabledata.aspx.cs" Inherits="diplaydata.displaytabledata" %>

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

        <asp:GridView ID="gv_displaydata" runat="server" BorderColor="#CC9966"
            BorderStyle="None" BorderWidth="1px"
               BackColor="White" CellPadding="4" Width="100%"
            AutoGenerateColumns="False" Height="129px"
            AllowPaging="true" onpageindexchanged="gv_displaydata_PageIndexChanged"
            onpageindexchanging="gv_displaydata_PageIndexChanging"
            onselectedindexchanged="gv_displaydata_SelectedIndexChanged" onselectedindexchanging="gv_displaydata_SelectedIndexChanging"
            >
            <Columns>
                <asp:BoundField FooterText="AUTHOR PHOT0" HeaderText="IMAGE">
                    <ControlStyle BackColor="#993300" BorderColor="#FFCC00" BorderStyle="Inset"
                        Font-Bold="True" Font-Size="Medium" Font-Underline="True" ForeColor="#FFFFCC" />
                    <FooterStyle BackColor="#FFFFCC" Font-Bold="True" ForeColor="#993300" />
                    <HeaderStyle BackColor="#993300" BorderColor="#FFCC00" BorderStyle="Inset"
                        Font-Bold="True" ForeColor="#FFFFCC" />
                </asp:BoundField>
                <asp:BoundField HeaderText="AUTHOR">
                <ControlStyle BackColor="#993300" BorderColor="#FFCC00" BorderStyle="Inset"
                        Font-Bold="True" Font-Size="Medium" Font-Underline="True" ForeColor="#FFFFCC" />
                    <FooterStyle BackColor="#FFFFCC" Font-Bold="True" ForeColor="#993300" />
                    <HeaderStyle BackColor="#993300" BorderColor="#FFCC00" BorderStyle="Inset"
                        Font-Bold="True" ForeColor="#FFFFCC" />
                </asp:BoundField>
                <asp:BoundField HeaderText="DESCRIPTION">
                <ControlStyle BackColor="#993300" BorderColor="#FFCC00" BorderStyle="Inset"
                        Font-Bold="True" Font-Size="Medium" Font-Underline="True" ForeColor="#FFFFCC" />
                    <FooterStyle BackColor="#FFFFCC" Font-Bold="True" ForeColor="#993300" />
                    <HeaderStyle BackColor="#993300" BorderColor="#FFCC00" BorderStyle="Inset"
                        Font-Bold="True" ForeColor="#FFFFCC" />
                </asp:BoundField>
            </Columns>
        </asp:GridView>
        <P>
            <asp:Label id="NotificationLabel" runat="server" Visible="False"></asp:Label>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server"></asp:SqlDataSource>
        </P>
    </div>
    </form>
</body>
</html>

and .aspx.cs code:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Oracle.DataAccess.Client;
using Oracle.DataAccess.Types;

// Application Import(s)
using images.Utilities;

namespace diplaydata
{

    public partial class displaytabledata : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();
            }
        }
        private DataTable getTable()
        {

            OracleDataAdapter adap = new OracleDataAdapter("select t.id, t.author, t.description from smstestblob t", "Data Source=ds1;User ID=test;Password=test;");

            DataTable dt = new DataTable();
            adap.Fill(dt);
            adap.Dispose();
            return dt;

        }

        protected void bind()
        {
            DataTable dr = getTable();
            gv_displaydata.DataSource = dr;
            gv_displaydata.DataBind();
        }

        protected void gv_displaydata_PageIndexChanged(object sender, EventArgs e)
        {
            gv_displaydata.PageIndex = gv_displaydata.PageIndex + 1;
            bind();
        }

        protected void gv_displaydata_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
        {
            gv_displaydata.PageIndex = gv_displaydata.PageIndex + 1;
            bind();
        }

        protected void gv_displaydata_SelectedIndexChanged(object sender, EventArgs e)
        {
            gv_displaydata.PageIndex = gv_displaydata.PageIndex + 1;
            bind();
        }
        protected void gv_displaydata_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            gv_displaydata.PageIndex = gv_displaydata.PageIndex + 1;
            bind();
        }
}

}

No data is getting displayed in the GridView on both pages 1 and 2. And when I click on 2 page link, and then first page, 2nd page link is no longer clickable. And one more problem is that though there is data in the table, it is not getting displayed in the GridView.

I am using Oracle 9i. And following is the table creation script:

SQL> CREATE TABLE SMSTestBlob
2 (
3   id number,
4   photo BLOB,
5   author varchar2(100),
6   description varchar2(500)
7 );

Table created.

SQL> alter table SMSTESTBLOB
2    add constraint PK_SMSTESTBLOB_ID primary key (ID);

Table altered.

SQL> create sequence smstestblobid_seq
2 minvalue 1
3 maxvalue 999999999999
4 start with 1
5 increment by 1
6 cache 20
7 cycle
8 order;

Sequence created.

*************************************************
If anyone can help on this, please do so on an urgent basis.

Thanks,

Regards,
Moksha

Answers (5)

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