rolemanage.aspx.cs

用ASP.NET（C#）、SQL Server2000数据库开发在线考试系统源代码

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 RoleManage.
	/// </summary>
	public class RoleManage : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.ImageButton editBtn;
		protected System.Web.UI.WebControls.ImageButton deleteBtn;
		protected System.Web.UI.WebControls.Button UpdateBtn;
		protected System.Web.UI.WebControls.Panel UpdatePanel;
		protected System.Web.UI.WebControls.LinkButton ReturnBtn;
		protected System.Web.UI.WebControls.ListBox RoleList;
		protected System.Web.UI.WebControls.TextBox EditRoleName;
		protected System.Web.UI.WebControls.TextBox RoleName;
		protected System.Web.UI.WebControls.Button AddRole;
		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)
			{
				BindRoleData();
			}

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

		private void BindRoleData()
		{
			RoleList.Items.Clear();

			RoleDB role = new RoleDB();
			SqlDataReader recr = role.GetRoles();

			RoleList.DataSource = recr;
			RoleList.DataTextField = "RoleName";
			RoleList.DataValueField = "RoleID";
			RoleList.DataBind();

			recr.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.editBtn.Click += new System.Web.UI.ImageClickEventHandler(this.EditDeleteBtn_Click);
			this.deleteBtn.Click += new System.Web.UI.ImageClickEventHandler(this.EditDeleteBtn_Click);
			this.UpdateBtn.Click += new System.EventHandler(this.UpdateBtn_Click);
			this.AddRole.Click += new System.EventHandler(this.AddRole_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void EditDeleteBtn_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			String commandName = ((ImageButton)sender).CommandName;

			if(RoleList.SelectedIndex > -1)
			{
				switch(commandName)
				{					
					case "edit":
					{
						UpdateRoleName();

						break;
					}
					case "delete":
					{
						DeleteRole();

						//控制更新Panel的可见性
						ControlUpdatePanelVisible();

						break;
					}
					default:
					{
						//控制更新Panel的可见性
						ControlUpdatePanelVisible();

						break;
					}
				}
				if(commandName == "delete")
				{
					BindRoleData();
				}
			}
			else
			{
				Response.Write("<script>alert(\"请选择你的数据项！\")</script>");
			}			
		}

		private void UpdateRoleName()
		{
			UpdatePanel.Visible = true;		

			RoleDB role = new RoleDB();
			SqlDataReader recr = role.GetSingleRole(Int32.Parse(RoleList.SelectedValue));

			while(recr.Read())
			{
				EditRoleName.Text = recr["RoleName"].ToString();
			}
			recr.Close();
		}

		private void DeleteRole()
		{
			RoleDB dis = new RoleDB();

			try
			{
				dis.DeleteRole(Int32.Parse(RoleList.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"," "));
			}
		}

		private void UpdateBtn_Click(object sender, System.EventArgs e)
		{
			UpdatePanel.Visible = false;

			RoleDB role = new RoleDB();

			try
			{
				role.UpdateRole(Int32.Parse(RoleList.SelectedValue),EditRoleName.Text.Trim());
			}
			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"," "));
			}

			BindRoleData();
		}

		private void AddRole_Click(object sender, System.EventArgs e)
		{
			RoleDB role = new RoleDB();

			if(RoleName.Text.Trim() != "")
			{
				try
				{
					role.AddRole(RoleName.Text.Trim());
				}
				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"," "));
				}

				//增加成功后，重新绑定数据和清空名称输入框
				RoleName.Text = "";
				BindRoleData();
			}

			//控制更新Panel的可见性
			ControlUpdatePanelVisible();
		}

		private void ControlUpdatePanelVisible()
		{
			if(UpdatePanel.Visible == true)
			{
				UpdatePanel.Visible = false;
			}
		}
	}
}