usermanage.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;

namespace Example_10_3
{
	/// <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.WebControls.TextBox UserName;
		protected System.Web.UI.WebControls.Button AddUser;
		protected System.Web.UI.WebControls.LinkButton ReturnBtn;
		protected System.Web.UI.HtmlControls.HtmlGenericControl title;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
			{
				BindUserData();
			}

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

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

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

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

			recu.Close();
		}

		#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.deleteBtn_Click);
			this.AddUser.Click += new System.EventHandler(this.AddUser_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void deleteBtn_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			if(UserList.SelectedIndex > -1)
			{
				UserDB user = new UserDB();

				try
				{
					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("~/DesktopModules/ErrorPage.aspx?ErrorUrl=" + sRawURL + "&ErrorMessage=" + ex.Message.Replace("\n"," "));
				}

				//重新绑定数据
				BindUserData();
			}
			else
			{
				Response.Write("<script>alert(\"请选择你的数据项！\")</script>");
			}
		}

		private void AddUser_Click(object sender, System.EventArgs e)
		{
			UserDB user = new UserDB();

			if(UserName.Text.Trim() != "")
			{
				try
				{
					user.AddUser(UserName.Text.Trim(),UserDB.Encrypt(UserName.Text.Trim()),"[e-mail]");
				}
				catch(Exception ex)
				{
					string sRawURL = Request.RawUrl;

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

				BindUserData();
			}
			else
			{
				Response.Write("<script>alert(\"用户名不能为空！\")</script>");
			}
		}
	}
}