C# Webform中读取Windows AD/LDAP域用户清单

直接上干货，核心代码如下，读取出来相应的用户清单到DataTable中。需要其它字段可以自己增加，别忘了引用using System.DirectoryServices。

 #region private DataTable GetData(int pageIndex, int pageSize, out int recordCount) 获取数据

     /// <summary>
     /// 获取数据
     /// </summary>
     private DataTable GetData(int pageIndex, int pageSize, out int recordCount)
     {
         string ldapPath = this.txtLDAPPath.Text.Trim();
         string ldapDomain = this.txtLDAPDomain.Text.Trim();
         string ldapUserName = this.txtLDAPUserName.Text.Trim();
         string ldapPassword = this.txtLDAPPassword.Text.Trim();
         string searchValue = this.txtSearch.Text.Trim();

         //总记录数量
         int iRecordCount = ;
         //BaseUserManager manager = new BaseUserManager(this.UserCenterDbHelper, this.UserInfo);
         //自定义LDAP用户表
         DataTable dtLdapUser = null;
         dtLdapUser = new DataTable();
         DataColumn[] columns =
         {
             new DataColumn(BaseUserEntity.FieldId),
             new DataColumn(BaseUserEntity.FieldUserName),
             new DataColumn(BaseUserEntity.FieldRealName),
             new DataColumn(BaseUserEntity.FieldUserFrom)
         };
         dtLdapUser.Columns.AddRange(columns);
         try
         {
             // 读取用户
             using (var de = new DirectoryEntry())
             {
                 de.Path = ldapPath;
                 if (!string.IsNullOrEmpty(ldapUserName))
                 {
                     if (string.IsNullOrEmpty(ldapDomain))
                     {
                         de.Username = ldapUserName;
                     }
                     else
                     {
                         de.Username = ldapDomain + "\\" + ldapUserName;
                     }
                 }
                 //密码为空就默认不验证用户密码
                 if (!string.IsNullOrEmpty(ldapPassword))
                 {
                     de.Password = ldapPassword;
                     de.AuthenticationType = AuthenticationTypes.Secure;
                 }
                 //刷新缓存
                 de.RefreshCache();

                 using (DirectorySearcher searcher = new DirectorySearcher())
                 {
                     searcher.SearchRoot = de;
                     searcher.Filter = "(objectClass=user)";
                     searcher.SearchScope = SearchScope.Subtree;

                     //需要导入的属性
                     //登录名
                     searcher.PropertiesToLoad.Add("userprincipalname");
                     //姓名
                     searcher.PropertiesToLoad.Add("name");

                     //定义排序方式
                     searcher.Sort = new SortOption("givenName", System.DirectoryServices.SortDirection.Ascending);

                     SearchResultCollection results = searcher.FindAll();
                     int i = ;
                     foreach (SearchResult result in results)
                     {
                         DataRow row = dtLdapUser.NewRow();

                         ResultPropertyCollection props = result.Properties;
                         string[] userNameArray = null;
                         if (props.PropertyNames != null)
                         {
                             foreach (string propName in props.PropertyNames)
                             {
                                 if (propName == "userprincipalname")
                                 {
                                     userNameArray = props[propName][].ToString().Split('@');
                                     //只保留@前的用户名
                                     row[BaseUserEntity.FieldUserName] = userNameArray[].ToString();
                                 }
                                 if (propName == "name")
                                 {
                                     row[BaseUserEntity.FieldRealName] = props[propName][];
                                 }
                             }
                         }
                         row[BaseUserEntity.FieldUserFrom] = "AD";
                         if (userNameArray != null && !string.IsNullOrEmpty(userNameArray[].ToString()))
                         {
                             i++;
                             row[BaseUserEntity.FieldId] = i;
                             dtLdapUser.Rows.Add(row);
                         }
                     }
                 }
             }

             recordCount = dtLdapUser.Rows.Count;

         }
         catch (Exception e)
         {
             recordCount = ;
         }
         return dtLdapUser;
     }
     #endregion

我还增加了LDAP(Windows AD域)用户一键导入的功能，截图如下，代码核心就是循环读取上述获取的DataTable，记得判断一下用户是否已经存在即可。