Membership 详解之查找用户

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Membership 详解之查找用户

2012年04月17日 ⁄ 综合 ⁄ 共 4667字 ⁄ 字号小中大 ⁄ 评论关闭

前面的一篇博文呢，是介绍了 Membership 来完成用户的增删改，

独独没有涉及到查这个功能块，所以本篇文章就来补上查找这个功能块，

其实在查找方面呢，是使用 Membership 这个静态类来完成的，

其提供两种方法，Membership.FindUsersByName(string name ) 和

Membership.FindUsersByEmail(string email),

上面的这两个方法都是返回一个集合 MembershipUserCollection ，

也就是 MembershipUser 的集合，

至于在实现方面还是很简单的，直接给个 Demo 就一目了然了，

先看 Demo__9.aspx 吧

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Demo__9.aspx.cs"
Inherits="WebForm.Demo__9" MaintainScrollPositionOnPostback="True" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div style="font-family: 微软雅黑; font-size: small">
        <br />
        <span lang="zh-cn">按用户名查找    
            <asp:DropDownList ID="ddlUserName" runat="server"
            AppendDataBoundItems="True" AutoPostBack="True"
                OnSelectedIndexChanged="ddlUserName_SelectedIndexChanged"
            Width="200px" style="margin-left: 0px">
                <asp:ListItem Value="0">请选择用户......</asp:ListItem>
            </asp:DropDownList>
                </span>
        <br />
        <br />
        按 Emial 查找    
        <span lang="zh-cn">
            <asp:DropDownList ID="ddlUserEmail" runat="server"
            AppendDataBoundItems="True" AutoPostBack="True"
            Width="200px" style="margin-left: 0px"
            onselectedindexchanged="ddlUserEmail_SelectedIndexChanged">
                <asp:ListItem Value="0">请选择用户......</asp:ListItem>
            </asp:DropDownList>
            </span>
        <br />
        <br />
        <asp:GridView ID="GridView1" runat="server"
           AutoGenerateColumns="False">
            <Columns>
                <asp:BoundField DataField="UserName" />
                <asp:BoundField DataField="Email" />
                <asp:BoundField DataField="PasswordQuestion" />
                <asp:CheckBoxField DataField="IsApproved" />
                <asp:CheckBoxField DataField="IsOnline" />
                <asp:BoundField DataField="CreationDate" />
            </Columns>
        </asp:GridView>
        <br />
        <br />
    </div>
    </form>
</body>
</html>

然后就是 Code-Behind 了

using System;
using System.Web.Security;

namespace WebForm
{
    public partial class Demo__9 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (User.Identity.IsAuthenticated == false)
            {
                FormsAuthentication.RedirectToLoginPage();
            }
            if (!IsPostBack)
            {
                ddlUserName.DataSource = Membership.GetAllUsers();
                ddlUserEmail.DataSource = Membership.GetAllUsers();

ddlUserName.DataTextField = "UserName";
ddlUserName.DataValueField = "UserName";

ddlUserEmail.DataTextField = "Email";
ddlUserEmail.DataValueField = "Email";

                ddlUserName.DataBind();
                ddlUserEmail.DataBind();
            }
        }

        //按 UserName 查询
        protected void ddlUserName_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (ddlUserName.SelectedValue.ToString() != "0")
            {
                //通过指定的用户名来查找，并返回成员集合 MembershipUserCollection
                MembershipUserCollection userCollectionByName =
                    Membership.FindUsersByName(ddlUserName.SelectedValue);
                GridView1.DataSource = userCollectionByName;
                GridView1.Columns[0].HeaderText = "用户名";
                GridView1.Columns[1].HeaderText = "邮箱";
                GridView1.Columns[2].HeaderText = "密码问题";
                GridView1.Columns[3].HeaderText = "是否可以验证";
                GridView1.Columns[4].HeaderText = "是否在线";
                GridView1.Columns[5].HeaderText = "账户创建日期";
                GridView1.DataBind();
            }
        }

        //按 Email 查询
        protected void ddlUserEmail_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (ddlUserEmail.SelectedValue != "0")
            {
                //通过指定的 Email 来查找，并返回成员集合 MembershipUserCollection
                MembershipUserCollection userCollectionByEmail =
                    Membership.FindUsersByEmail(ddlUserEmail.SelectedValue);
                GridView1.DataSource = userCollectionByEmail;
                GridView1.Columns[0].HeaderText = "用户名";
                GridView1.Columns[1].HeaderText = "邮箱";
                GridView1.Columns[2].HeaderText = "密码问题";
                GridView1.Columns[3].HeaderText = "是否可以验证";
                GridView1.Columns[4].HeaderText = "是否在线";
                GridView1.Columns[5].HeaderText = "账户创建日期";
                GridView1.DataBind();
            }
        }
    }
}