usersmanmodule.ascx.cs

这是企业客户服务系统 老师给的光盘里带的 看着不错

namespace KhfwWeb.Modules
{
	using System;
	using System.Data;
	using System.Data.SqlClient;
	using System.Configuration;
	using System.Drawing;
	using System.Web;
	using System.Web.UI.WebControls;
	using System.Web.UI.HtmlControls;

	/// <summary>
	///		UsersManModule 的摘要说明。
	/// </summary>
	public class UsersManModule : ModuleBase
	{
		protected System.Web.UI.WebControls.TextBox UserIdTextBox;
		protected System.Web.UI.WebControls.Button search;
		protected System.Web.UI.WebControls.DataGrid dg_UsersList;
		protected System.Web.UI.WebControls.Button ShowAll;
		protected System.Web.UI.WebControls.TextBox UserIdTextbox;

		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!IsPostBack) Show_UsersList();
		}

		protected void Show_UsersList()
		{	
			//从文件Web.config中读取连接字符串
			string sqldb = ConfigurationSettings.AppSettings["ConnectionString"];
			//连接JdglSys数据库
			SqlConnection Conn = new SqlConnection (sqldb);
			//定义sql语句
			String selsql="select UserId,Name,Type from UsersInfo";
			//创建SqlDataAdapter对象,调用selsql
			SqlDataAdapter myadapter = new SqlDataAdapter (selsql,Conn);
			//创建并填充DataSet
			DataSet ds = new DataSet ();
			myadapter.Fill (ds);
        
			dg_UsersList.DataSource =ds;
			dg_UsersList.DataBind ();

			Conn.Close ();
		}
		protected void DataGrid_Delete(Object sender,DataGridCommandEventArgs E)
		{
			//从文件Web.config中读取连接字符串
			string sqldb = ConfigurationSettings.AppSettings["ConnectionString"];
			//连接JdglSys数据库
			SqlConnection Conn = new SqlConnection (sqldb);
			Conn.Open ();
			//定义sql语句
			String delsql="delete from UsersInfo where UserId = @UserId";
			//创建mycommand对象,调用delsql
			SqlCommand mycommand = new SqlCommand (delsql,Conn);
			mycommand.Parameters .Add ("@UserId",SqlDbType.VarChar );
			//从dg_UsersList中获取UserId值
			mycommand.Parameters ["@UserId"].Value =E.Item.Cells [0].Text .ToString ();

			mycommand.ExecuteNonQuery ();

			dg_UsersList.EditItemIndex =-1;
			//更新dg_UsersList
			Show_UsersList();
		}
		protected void DataGrid_Page(Object sender,DataGridPageChangedEventArgs E)
		{
			dg_UsersList.CurrentPageIndex =E.NewPageIndex ;
			Show_UsersList();
		}
		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		///		设计器支持所需的方法 - 不要使用代码编辑器
		///		修改此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.search.Click += new System.EventHandler(this.search_Click);
			this.ShowAll.Click += new System.EventHandler(this.ShowAll_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void search_Click(object sender, System.EventArgs e)
		{
			//从文件Web.config中读取连接字符串
			string sqldb = ConfigurationSettings.AppSettings["ConnectionString"];
			//连接JdglSys数据库
			SqlConnection Conn = new SqlConnection (sqldb);
			//定义sql语句
			String selsql="select UserId,Name,Type from UsersInfo where UserId = @UserId";
			//创建SqlDataAdapter对象,调用selsql
			SqlDataAdapter myadapter = new SqlDataAdapter (selsql,Conn);
			myadapter.SelectCommand.Parameters .Add ("@UserId",SqlDbType.VarChar );
			myadapter.SelectCommand.Parameters ["@UserId"].Value =UserIdTextBox.Text.Trim();
			//创建并填充DataSet
			DataSet ds = new DataSet ();
			myadapter.Fill (ds);

			dg_UsersList.DataSource =ds;
			dg_UsersList.DataBind ();

			Conn.Close ();
		}

		private void ShowAll_Click(object sender, System.EventArgs e)
		{
			Show_UsersList();
		}

	}
}