ASP.NET Tutorial/ADO.net Database/DbDataAdapter

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Write the changes in a DataSet using a DbDataAdapter

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="UpdatingDataSet" %> <!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 id="Head1" runat="server"> 

  <title>Updating a DataSet</title>

<body> 

  <form id="form1" runat="server">

Updating a DataSet

Authors

     <asp:GridView ID="grdAuthors" runat="server" />
     
        <asp:Label ID="labMsg" runat="server" />
        

  </form>

</body> </html> 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;
     }
  }

}</source>

Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/ADO.net_Database/DbDataAdapter&oldid=2692»