addusertorole.aspx.cs

《圣殿祭司的ASP.NET 2.0开发详解——使用C#》光盘内容.包含了书籍所含的源代码.非常经典的一本asp.net2.0的书籍

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class AddUserToRole : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
		if (!IsPostBack)
		{
			GetUserRoleData();
		}
		txtMsg.Text = "";
    }

	//将User及Role读进DropDownList
	private void GetUserRoleData()
	{
		//读取所有的User
		dwnUser.Items.Add("请选择用户");

		MembershipUserCollection Users = Membership.GetAllUsers();

		foreach (MembershipUser singleUser in Users)
		{
			dwnUser.Items.Add(singleUser.UserName);
		}

		//读取所有的角色
		dwnRole.DataSource = Roles.GetAllRoles();
		dwnRole.DataBind();
	}

	protected void dwnUser_SelectedIndexChanged(object sender, EventArgs e)
	{
		ShowUserRole();
	}

	//显示User所属的角色
	private void ShowUserRole()
	{
		if (dwnUser.SelectedIndex != 0)
		{
			gviewUserRoles.DataSource = Roles.GetRolesForUser(dwnUser.SelectedItem.Text);
			gviewUserRoles.DataBind();
		}
	}

	//将User加入Role之中
	protected void btnAddUserToRole_Click(object sender, EventArgs e)
	{
		if (dwnUser.SelectedIndex != 0)
		{
			try
			{
				Roles.AddUserToRole(dwnUser.SelectedItem.Text, dwnRole.SelectedItem.Text);
				ShowUserRole();
			}
			catch (Exception ex)
			{
				txtMsg.Text = Server.HtmlEncode(ex.Message.ToString());
			}
		}
		else
		{
			new AlertMessage().showMsg(this.Page, "请先选取用户！");
		}
	}

	//将User自Role中移除
	protected void btnRemoveUserRole_Click(object sender, EventArgs e)
	{
		if (dwnUser.SelectedIndex != 0)
		{
			try
			{
				Roles.RemoveUserFromRole(dwnUser.SelectedItem.Text, dwnRole.SelectedItem.Text);
				ShowUserRole();
			}
			catch (Exception ex)
			{
				txtMsg.Text = Server.HtmlEncode(ex.Message.ToString());
			}
		}
		else
		{
			new AlertMessage().showMsg(this.Page, "请先选取用户！");
		}
	}
}