ASP.NET C# - Updating Oracle database

[sumalatha055]

i had written this to update data in table but its not responding
can u please help ma?

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;
using System.Data.OracleClient;
public partial class _Default : System.Web.UI.Page
{
    OracleConnection objcon= new OracleConnection("Data Source=fsoft;user=fcctest;password=fcctest");
    OracleCommand objcmd = new OracleCommand();
    protected void Page_Load(object sender, EventArgs e)
    {
 
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        objcon.Open();
        OracleDataAdapter objda = new OracleDataAdapter(" select *  from CAN_PERSONALINFO where REFERANCE_ID=" + TextBox1.Text + " ", objcon);
        DataSet objds = new DataSet();
        OracleDataAdapter objda1 = new OracleDataAdapter(objcmd);
        objda.Fill(objds);
        GridView1.DataSource = objds.Tables[0];
        GridView1.DataBind();
        objcon.Close();
 
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        try
        {
            OracleDataAdapter objcmd1 = new OracleDataAdapter("update  CAN_PERSONALINFO  SET FIRST_NAME=" + TextBox2.Text + " where REFERANCE_ID =" + TextBox1.Text + " ", objcon);
            objcon.Open();
            OracleDataAdapter objcmd2 = new OracleDataAdapter("select * from CAN_PERSONALINFO where REFERANCE_ID=" + TextBox1.Text + " ", objcon);
            objcmd.ExecuteNonQuery();
            DataSet ds2 = new DataSet();
            OracleDataAdapter objda2 = new OracleDataAdapter(objcmd2);
            objda2.Fill(ds2);
            GridView1.DataSource = ds2.Tables[0];
            GridView1.DataBind();
            objcon.Close();
            Label1.Text = "update your FIRST_NAME";
 
        }
 
        catch (Exception ex)
        {
            throw ex;
        }
    }
}

[DrBunchman]

Hi sumalatha055,

Welcome to Bytes.com! I hope you find the site useful but I need to mention a couple of things:

You've posted your question in the ASP Forum which is for Classic ASP only - I've moved it for you but in future please post all ASP.NET questions in the .NET Forum.

Please don't forget to wrap your code in CODE tags - it makes your posts much easier to read.

Your question does not contain enough detail - what do you mean by not responding? Are you getting an error?

Please read the Posting Guidelines if you have not done so already.

Good luck finding a solution,

Dr B

[Curtis Rutland]

You have several problems. You keep declaring new DataAdapters, but you are using (and trying to use) the first one. You need a better understanding of what's going on.

What I usually do is declare a connection, command, and adapter as global. Then I initialize them in my constructor/page_load method. But keep using the same one.

Also, you don't need to open and close your connections when you use a DataAdapter. It does that for you.

EDIT:
Spotted another problem.

You delcare a DataAdapter with an update command, which is already a problem, because you can't do that. You have to declare them with a select statement. But then you never use it.

You need to seriously rework your logic. Read this article I wrote. Hopefully you will have a better understanding about using DataAdapters and commands.

[kank999]

Dear sumalatha055

You have not used refrence file of Oracle provider.
You must use :

Using Oracle.DataAccess;
This will support for OracleDataAdapter and oracle connection.

Regards