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Data Access Application Block

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 Microsoft.Practices.EnterpriseLibrary.Common;
using Microsoft.Practices.EnterpriseLibrary.Data;
using System.Data.Common;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
Database db = DatabaseFactory.CreateDatabase("NorthWind");
// Database db = DatabaseFactory.CreateDatabase();
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
this.GridView1.DataSource = GetDateSet("select top 10 * from dbo.Products").Tables[0];
this.GridView1.DataBind();

}
}
/// <summary>
/// Ö´Ðе¥ÌõSQL Óï¾ä
/// </summary>
/// <param name="sql">sql</param>
/// <returns>DataSet</returns>
private DataSet GetDateSet(string sql)
{
DataSet ds = db.ExecuteDataSet(CommandType.Text,sql);
return ds;
}
/// <summary>
/// Ö´Ðе¥ÌõSQL Óï¾ä——Ö»¶ÁÊý¾Ý
/// </summary>
/// <param name="sql">sql</param>
/// <returns>IDataReader</returns>
private IDataReader GetDataReader(string sql)
{
IDataReader idatareader = db.ExecuteReader(CommandType.Text,sql);
return idatareader;
}
/// <summary>
/// Ö´Ðе¥ÌõSQL Óï¾ä——»ñµÃÒ»ÁÐÊý¾Ý
/// </summary>
/// <param name="sql">sql</param>
/// <returns>int</returns>
private int GetSingleValue(string sql)
{
int value =(int)db.ExecuteScalar(CommandType.Text,sql);
return value;
}
/// <summary>
/// Ö´Ðд洢¹ý³Ì
/// </summary>
private void ExeProcNonPar()


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