mydgautoupdate.aspx.cs

ASP C#代码实例 适合初学人士学习使用

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Configuration;

namespace Example_9_4
{
	/// <summary>
	/// Summary description for MyDGAutoUpdate.
	/// </summary>
	public class MyDGAutoUpdate : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid CustomerDatagrid;
		private readonly string SQLCONNECTIONSTRING = ConfigurationSettings.AppSettings["SQLCONNECTIONSTRING"].ToString();
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
			{
				///绑定DataGrid控件的数据
				BindDataGrid();
			}
		}

		private void BindDataGrid()
		{
			SqlConnection myConnection = new SqlConnection(SQLCONNECTIONSTRING);
			String cmdText = "Select TOP 15 * FROM Staff";
			SqlDataAdapter da = new SqlDataAdapter(cmdText,myConnection);
			myConnection.Open();

			///创建控件的数据源——DataSet对象
			DataSet ds = new DataSet();
			da.Fill(ds);

			///绑定控件的数据
			CustomerDatagrid.DataSource = ds;
			CustomerDatagrid.DataBind();

			///关闭数据库的链接
			myConnection.Close();
		}

		private void CustomerDatagrid_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			CustomerDatagrid.EditItemIndex = e.Item.ItemIndex;
			
			//重新绑定DataGrid控件的数据
			BindDataGrid();
		}

		private void CustomerDatagrid_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			CustomerDatagrid.EditItemIndex = -1;

			//重新绑定DataGrid控件的数据
			BindDataGrid();
		}

		private void CustomerDatagrid_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			CustomerDatagrid.EditItemIndex = -1;

			//重新绑定DataGrid控件的数据
			BindDataGrid();
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.CustomerDatagrid.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.CustomerDatagrid_CancelCommand);
			this.CustomerDatagrid.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.CustomerDatagrid_EditCommand);
			this.CustomerDatagrid.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.CustomerDatagrid_UpdateCommand);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}