usermanage.aspx.cs

来自「用ASP.NET（C#）、SQL Server2000数据库开发在线考试系统源代」· CS 代码 · 共 132 行

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;

namespace ExamineSystem
{
	/// <summary>
	/// Summary description for UserManage.
	/// </summary>
	public class UserManage : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.ListBox UserList;
		protected System.Web.UI.WebControls.ImageButton deleteBtn;
		protected System.Web.UI.HtmlControls.HtmlGenericControl title;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			///验证用户的权限
			if(Session["UserID"] == null)
			{
				Response.Redirect("~/Default.aspx");
			}
			

			if(!Page.IsPostBack)
			{
				BindData();
			}

			deleteBtn.Attributes.Add("onclick","return confirm('你确定要删除所选择用户吗?');");
		}

		private void BindData()
		{
			UserList.Items.Clear();

			UserDB user = new UserDB();
			SqlDataReader recm = user.GetUsers();

			UserList.DataSource = recm;
			UserList.DataTextField = "UserName";
			UserList.DataValueField = "UserID";
			UserList.DataBind();

			recm.Close();
		}

		private void EditDeleteBtn_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			String commandName = ((ImageButton)sender).CommandName;
		
			if(UserList.SelectedIndex > -1)
			{
				switch(commandName)
				{
					case "delete":
					{
						DeleteUser();
						break;
					}
					default:
					{
						break;
					}
				}
				if(commandName == "delete")
				{
					BindData();
				}
			}
			else
			{
				Response.Write("<script>alert(\"请选择你的数据项！\")</script>");
			}		
		}

		private void DeleteUser()
		{
			UserDB user = new UserDB();

			try
			{
				if(Int32.Parse(UserList.SelectedValue) > 0)
				{
					user.DeleteUser(Int32.Parse(UserList.SelectedValue));
				}
			}
			catch(Exception ex)
			{
				string sRawURL = Request.RawUrl;

				if(sRawURL.IndexOf("?") > -1)
				{
					sRawURL = sRawURL.Substring(0,sRawURL.IndexOf("?"));
				}				
				Response.Redirect("~/DesktopUsers/ErrorPage.aspx?ErrorUrl=" + sRawURL + "&ErrorMessage=" + ex.Message.Replace("\n"," "));
			}
		}
		

		#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.deleteBtn.Click += new System.Web.UI.ImageClickEventHandler(this.EditDeleteBtn_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}