editrole.aspx.cs

wrox c#高级编程

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 Wrox.WebModules.Accounts.Business;
using Wrox.WebModules.Accounts;

namespace Wrox.WebModules.Accounts.Web
{
	/// <summary>
	/// Summary description for EditRole.
	/// </summary>
	public class EditRole : Wrox.ThePhile.Web.PhilePage
	{
		protected System.Web.UI.WebControls.Label RoleLabel;
		protected System.Web.UI.WebControls.ListBox CategoryList;
		protected System.Web.UI.WebControls.ListBox PermissionList;
		protected Wrox.ThePhile.Web.Controls.Server.Navigator MenuNav;
		protected System.Web.UI.WebControls.Button RemovePermissionButton;
		protected System.Web.UI.WebControls.Button AddPermissionButton;
		protected System.Web.UI.WebControls.DropDownList PermissionDropList;
		protected System.Web.UI.WebControls.Button RemoveRoleButton;
		protected System.Web.UI.WebControls.LinkButton ManageAssignmentsLink;

		private Role currentRole;
	
		private void DoInitialDataBind()
		{
			currentRole = new Role(Convert.ToInt32(Request["RoleID"]));
			RoleLabel.Text = "Current Role: " + currentRole.Description;
		
			PermissionList.Items.Clear();
			RemovePermissionButton.Visible = false;
			CategoryList.DataSource = currentRole.Permissions.Tables["Categories"];
			CategoryList.DataTextField = "Description";
			CategoryList.DataValueField = "CategoryID";
			CategoryList.DataBind();

			DataSet allPermissions = AccountsTool.GetAllPermissions();
			PermissionDropList.DataSource = allPermissions.Tables["Permissions"];
			PermissionDropList.DataTextField = "Description";
			PermissionDropList.DataValueField = "PermissionID";
			PermissionDropList.DataBind();

		}

		private void Page_Load(object sender, System.EventArgs e)
		{
			// Put user code to initialize the page here
			SitePrincipal currentPrincipal = (SitePrincipal)Context.User;
			if (!currentPrincipal.HasPermission((int)AccountsPermissions.UpdateRoles))
			{
				Response.Write("You don't have sufficient permission to be using this page.");
				Response.End();
			}
			
			if (!Page.IsPostBack) 
			{
				DoInitialDataBind();
			}
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			base.OnInit(e);
			InitializeComponent();			
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.ManageAssignmentsLink.Click += new System.EventHandler(this.ManageAssignmentsLink_Click);
			this.CategoryList.SelectedIndexChanged += new System.EventHandler(this.CategoryList_SelectedIndexChanged);
			this.PermissionList.SelectedIndexChanged += new System.EventHandler(this.PermissionList_SelectedIndexChanged);
			this.RemovePermissionButton.Click += new System.EventHandler(this.RemovePermissionButton_Click);
			this.AddPermissionButton.Click += new System.EventHandler(this.AddPermissionButton_Click);
			this.RemoveRoleButton.Click += new System.EventHandler(this.RemoveRoleButton_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void SelectCategory(int categoryId, bool forceSelection)
		{
			if (forceSelection)
			{
				CategoryList.SelectedIndex = CategoryList.Items.IndexOf (
					CategoryList.Items.FindByValue( categoryId.ToString() ));
			}
			currentRole = new Role(Convert.ToInt32(Request["RoleID"]));
			DataTable categories = currentRole.Permissions.Tables["Categories"];		

			DataRow currentCategory = categories.Rows.Find( categoryId );
			if (currentCategory != null) 
			{
				DataRow[] permissions = currentCategory.GetChildRows("PermissionCategories");

				PermissionList.Items.Clear();
				foreach (DataRow currentRow in permissions)
				{
					PermissionList.Items.Add(
						new ListItem( (string)currentRow["Description"], Convert.ToString(currentRow["PermissionID"])) );
				}
			}
		}

		private void CategoryList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			SelectCategory( Convert.ToInt32(CategoryList.SelectedItem.Value), false );			
		}

		private void RemovePermissionButton_Click(object sender, System.EventArgs e)
		{
			int currentRole = Convert.ToInt32(Request["RoleID"]);
			Role bizRole = new Role(currentRole);
			bizRole.RemovePermission( Convert.ToInt32(PermissionList.SelectedItem.Value) );
			DoInitialDataBind();
			SelectCategory( Convert.ToInt32(Request["CategoryList"]), true );
		}

		private void PermissionList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			RemovePermissionButton.Visible = true;
		}

		private void AddPermissionButton_Click(object sender, System.EventArgs e)
		{
			int currentRole = Convert.ToInt32(Request["RoleID"]);
			Role bizRole = new Role(currentRole);
			bizRole.AddPermission( Convert.ToInt32(PermissionDropList.SelectedItem.Value) );			
			DoInitialDataBind();	
			SelectCategory( Convert.ToInt32(Request["CategoryList"]), true);
		}

		private void RemoveRoleButton_Click(object sender, System.EventArgs e)
		{
			int currentRole = Convert.ToInt32(Request["RoleID"]);
			Role bizRole = new Role(currentRole);
			bizRole.Delete();
			Server.Transfer("roles.aspx");
		}

		private void ManageAssignmentsLink_Click(object sender, System.EventArgs e)
		{
			Server.Transfer("RoleAssignments.aspx?RoleID="+Request["RoleID"]);
		}
	}
}