ADO Net Database ASP.Net Tutorial

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"  Inherits="UpdatingDataSet" %>



   Updating a DataSet

   
      
         

Updating a DataSet


      

Authors


      
      
         
         
      

   


File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
public partial class UpdatingDataSet : System.Web.UI.Page
{
   protected void Page_Load(object sender, EventArgs e)
   {
      string connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=";
      connString += Server.MapPath("~/App_Data/Book.mdb") + ";";
      DataSet ds = new DataSet();
      try
      {
         OleDbConnection conn = new OleDbConnection(connString);
         OleDbDataAdapter adapter = new OleDbDataAdapter();
         string sqlSelect = " SELECT * FROM Authors";
         OleDbCommand cmdSelect = new OleDbCommand(sqlSelect, conn);
         adapter.SelectCommand = cmdSelect;
         string sqlInsert = "INSERT INTO Authors (AuthorName)";
         sqlInsert += "VALUES (@name) ";
         OleDbCommand cmdInsert = new OleDbCommand(sqlInsert, conn);
         OleDbParameter param = new OleDbParameter("@name",OleDbType.VarChar);
         param.SourceColumn = "AuthorName";
         param.SourceVersion = DataRowVersion.Current;
         cmdInsert.Parameters.Add(param);
         adapter.InsertCommand = cmdInsert;
         adapter.Fill(ds, "AuthorsTable");
         DataRow dr1 = ds.Tables["AuthorsTable"].NewRow();
         dr1["AuthorName"] = "R";
         ds.Tables["AuthorsTable"].Rows.Add(dr1);
         DataRow dr2 = ds.Tables["AuthorsTable"].NewRow();
         dr2["AuthorName"] = "A";
         ds.Tables["AuthorsTable"].Rows.Add(dr2);
         adapter.Update(ds, "AuthorsTable");
         grdAuthors.DataSource = ds.Tables["AuthorsTable"].DefaultView;
         grdAuthors.DataBind();
      }
      catch (Exception ex)
      {
         labMsg.Text = "Error occurred accessing the database";
         labMsg.Text += "
" + ex.Message;
      }
   }
}