sharepoint默认是没有修改AD密码 和切换 用户的功能，这里我用future的方式来实现。

　　部署wsp前：

　　部署后：

　　点击以其他用户身份登录

　　点击修改用户密码：

　　这里的扩展才菜单我们用CustomAction来实现，我们需要添加空项目来部署它

　　以其他用户身份登录得xml如下：

　　修改用户密码的xml如下：

　　这里我们需要新建一个应用程序页面，首先需要添加路径映射：

　　添加应用程序页面的代码如下：

<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %><%@ Import Namespace= "Microsoft.SharePoint.ApplicationPages" %> <%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls"  Assembly="Microsoft.SharePoint,  Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities"  Assembly="Microsoft.SharePoint,  Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register Tagprefix="asp" Namespace="System.Web.UI"  Assembly="System.Web.Extensions,  Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %> <%@ Import Namespace="Microsoft.SharePoint" %> <%@ Assembly Name="Microsoft.Web.CommandUI, Version=15.0.0.0, Culture=neutral,  PublicKeyToken=71e9bce111e9429c" %> <%@ Page Language="C#" AutoEventWireup="true"  CodeBehind="ChangePassword.aspx.cs"  Inherits="SharePointProjectDemo.Layouts.ChangePassword.ChangePassword"  DynamicMasterPageFile="~masterurl/default.master" %> <asp:Content ID="PageHead"  ContentPlaceHolderID="PlaceHolderAdditionalPageHead" runat="server"> </asp:Content><asp:Content ID="Main" ContentPlaceHolderID="PlaceHolderMain" runat="server">      <asp:Literal ID="ltMsg" EnableViewState="false" runat="server"></asp:Literal><div>     <h3>         <span>修改密码</span>     </h3>     <table width="400px">          <tr>             <td>                域            </td>             <td>                 :            </td>             <td>                 <asp:TextBox ID="txtdomain" runat="server" ></asp:TextBox>             </td>         </tr>          <tr>             <td>                 旧密码            </td>             <td>                 :            </td>             <td>                 <asp:TextBox ID="txtOld" runat="server" TextMode="Password"></asp:TextBox>             </td>         </tr>         <tr>             <td>                 新密码            </td>             <td>                 :            </td>             <td>                 <asp:TextBox ID="txtPass1" runat="server" TextMode="Password"></asp:TextBox>             </td>         </tr>         <tr>             <td>                 确认新密码            </td>             <td>                 :            </td>             <td>                 <asp:TextBox ID="txtPass2" runat="server" TextMode="Password"></asp:TextBox>             </td>         </tr>         <tr>             <td colspan="3" align="center">                 <br />                 <asp:Button ID="btnChangePwd" runat="server" Text="修改密码"  OnClick="btnChangePwd_Click" />             </td>         </tr>     </table>     <br />     <br /></div></asp:Content> <asp:Content ID="PageTitle" ContentPlaceHolderID="PlaceHolderPageTitle" runat="server"> 修改密码 </asp:Content> <asp:Content  ID="PageTitleInTitleArea"  ContentPlaceHolderID="PlaceHolderPageTitleInTitleArea" runat="server" > 修改密码</asp:Content>

 

 

using System;using Microsoft.SharePoint;using Microsoft.SharePoint.WebControls; using System.Security.Principal;using System.DirectoryServices.AccountManagement; namespace SharePointProjectDemo.Layouts.ChangePassword {    public class Impersonator     {        // Fields         private WindowsImpersonationContext ctx = null;        // Methods         public void BeginImpersonation()         {            try             {                if (!WindowsIdentity.GetCurrent().IsSystem)                 {       this.ctx = WindowsIdentity.Impersonate(WindowsIdentity.GetCurrent().Token);                     this.IsImpersonated = true;                 }             }            catch             {                this.IsImpersonated = false;             }         }        public void StopImpersonation()         {            if (this.ctx != null)             {                this.ctx.Undo();             }         }        // Properties         public bool IsImpersonated         {            set;            get;         }     }    public partial class ChangePassword : LayoutsPageBase     {        protected void btnChangePwd_Click(object sender, EventArgs e)         {            string str = this.txtPass1.Text.Trim();             string str2 = this.txtPass2.Text.Trim();             string str3 = this.txtOld.Text.Trim();             string str4 = this.txtdomain.Text.Trim();             if (string.IsNullOrWhiteSpace(str4))             {                this.ltMsg.Text = "域不能为空！";             }            else if (string.IsNullOrWhiteSpace(str3))             {                this.ltMsg.Text = "旧密码不能为空！";             }            else if (string.IsNullOrWhiteSpace(str))             {                this.ltMsg.Text = "新密码不能为空！";             }            else if (str == str2)             {                this.ChangeUserPassword(this.txtPass2.Text.Trim(), str3, str4);             }            else             {                this.ltMsg.Text = "两次新密码不一致，请检查！";             }         }        private void ChangeUserPassword(string NewPwd, string OldPwd, string domain)         {            try             {                 Impersonator impersonator = new Impersonator();                 impersonator.BeginImpersonation();                 using (PrincipalContext context = this.GetPContext(OldPwd, domain))                 {                     using (UserPrincipal principal = UserPrincipal.FindByIdentity (context, IdentityType.SamAccountName, GetLoginName()))                     {                         principal.ChangePassword(OldPwd, NewPwd);                     }                 }                if (impersonator.IsImpersonated)                 {                     impersonator.StopImpersonation();                    this.ltMsg.Text = "已成功修改密码！";                 }                else                 {                    this.ltMsg.Text = "无法修改您的密码，请联系您的系统管理员！";                 }             }            catch (Exception exception)             {                this.ltMsg.Text = exception.Message;             }         }        private string GetDomainContainter(string domain)         {            string str = string.Empty;             string[] strArray = domain.Split(new char[] { . },  StringSplitOptions.RemoveEmptyEntries);             foreach (string str2 in strArray)             {                 str = str + "DC=" + str2 + ",";             }            if (str.Length > 0)             {                 str = str.Substring(0, str.Length - 1);             }            return str;         }        private string GetLoginName()         {            string username= SPContext.Current.Web.CurrentUser.LoginName.Replace("i:0#.w|", "");             if(username.EndsWith(@"system"))             {                 username = username.Replace("system", "sherry");             }            return username;         }        private string GetLoginNameDomain()         {            string[] strArray = GetLoginName().Split(new char[] {  },  StringSplitOptions.RemoveEmptyEntries);             if (strArray.Length == 2)             {                return strArray[0];             }            return null;         }        private PrincipalContext GetPContext(string OldPwd, string domain)         {            return new PrincipalContext(ContextType.Domain, domain, this.GetDomainContainter(domain),  ContextOptions.Negotiate, this.GetLoginName(), OldPwd);         }        protected void Page_Load(object sender, EventArgs e)         {            this.ltMsg.Text = GetLoginName().Replace("i:0#.w|", "");         }     } }