rolemanager.aspx.cs

基于角色的用户验证. 这个程序重点写了四个pages以实现这些功能：增加用户

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;

namespace RolesBasedAthentication.Web
{
	public class RoleManager : Web.PageBase
	{
		protected System.Web.UI.WebControls.TextBox RoleName;
		protected System.Web.UI.WebControls.Button AddRole;
		protected System.Web.UI.WebControls.Button Delete;
		protected System.Web.UI.HtmlControls.HtmlInputHidden RoleIDHidden;
		protected System.Web.UI.WebControls.DataGrid RolesGrid;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if (!Context.User.Identity.IsAuthenticated)
				Response.Redirect("Login.aspx");

			if (!((SitePrincipal)Context.User).IsInRole("Site Admin"))
				Response.Redirect("Login.aspx");

			if (!Page.IsPostBack)
				BindGrid();
		}

		private void BindGrid()
		{
			RolesGrid.DataSource = Role.GetRoles();
			RolesGrid.DataBind();
		}

		#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.Delete.Click += new System.EventHandler(this.Delete_Click);
			this.AddRole.Click += new System.EventHandler(this.AddRole_Click);
			this.RolesGrid.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.RolesGrid_CancelCommand);
			this.RolesGrid.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.RolesGrid_EditCommand);
			this.RolesGrid.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.RolesGrid_UpdateCommand);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void AddRole_Click(object sender, System.EventArgs e)
		{
			if (Page.IsValid)
			{
				Role role = new Role();
				role.RoleName = RoleName.Text;
				role.Add();

				RoleName.Text = "";
				BindGrid();
			}
		}

		private void RolesGrid_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			RolesGrid.EditItemIndex = e.Item.ItemIndex;
			BindGrid();
		}

		private void RolesGrid_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			RolesGrid.EditItemIndex = -1;
			BindGrid();
		}

		private void RolesGrid_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			Role role = new Role(int.Parse(((Label)e.Item.Cells[3].FindControl("RoleID")).Text));
			role.RoleName = ((TextBox)e.Item.Cells[3].FindControl("RoleNameEdit")).Text;
			role.Update();

			RolesGrid.EditItemIndex = -1;
			BindGrid();
		}

		private void Delete_Click(object sender, System.EventArgs e)
		{
			Role role = new Role(int.Parse(RoleIDHidden.Value));
			role.Delete();

			BindGrid();
		}
	}
}