SharePoint2013代码操作权限组的几个Demo

（1）代码创建组

protected void CreateGroup_Click(object sender, EventArgs e)   
     {            string groupName = this.groupTitle.Text;     
       string groupDescription = "I'm WanRen,I'm creating group";   
         SPSecurity.RunWithElevatedPrivileges(delegate()          
  {                using (SPSite site = new SPSite(SPContext.Current.Web.Url))     
           {                    using (SPWeb web = site.OpenWeb())                
    {                        web.AllowUnsafeUpdates = true;                     
   //组名,拥有者（我理解为创建者，谁创的就是谁的罢）,组里的默认用户，组描述             
           web.SiteGroups.Add(groupName, web.CurrentUser, null, groupDescription); 
                       //获取到刚刚创建的这个组     
                   SPGroup group = web.SiteGroups[groupName];
                        //将当前用户添加到改组中           
             SPUser user = web.EnsureUser("liuwanren");    

                    //不要将系统用户往组里添加，是显示不出来的   
                     group.Users.Add(user.LoginName, user.Email, user.Name, user.Notes);       
                 group.Update();         
               //基于这个组定义一个角色           
             SPRoleAssignment assignment = new SPRoleAssignment(group);       
                 //创建一个权限级别         
               SPRoleDefinition definition = web.RoleDefinitions.GetByType(SPRoleType.Administrator);  
                      //给角色绑定一个权限       
                 assignment.RoleDefinitionBindings.Add(definition);      
                  //将该角色添加到web的角色集合中      
                  web.RoleAssignments.Add(assignment);  
                      web.Update();          
              web.AllowUnsafeUpdates = false;     
                   ScriptManager.RegisterStartupScript(this, this.GetType(), "result", "alert('" + "创建成功" + "');", true);                    }                }            });        }

（2）代码删除组

protected void DeleteGroup_Click(object sender, EventArgs e) 
       {            string groupName = this.groupTitle.Text; 
           SPSecurity.RunWithElevatedPrivileges(delegate()      
      {                using (SPSite site = new SPSite(SPContext.Current.Web.Url)) 
               {       
             using (SPWeb web = site.OpenWeb())   
                 {                    
    foreach (SPGroup group in web.SiteGroups)         
               {                 
           if (group.Name.Equals(groupName))    
                        {                 
               web.SiteGroups.Remove(group.Name);  
                              break;              
              }    
                    }      
              }         
       }          
  });          
  ScriptManager.RegisterStartupScript(this, this.GetType(), "result", "alert('" + "删除成功" + "');", true);     
   }

（3）获取组并从组中移除用户

 

protected void GetGroup_Click(object sender, EventArgs e) 
       {      
      string groupName = this.groupTitle.Text;      
      SPSecurity.RunWithElevatedPrivileges(delegate()    
        {                using (SPSite site = new SPSite(SPContext.Current.Web.Url))    
            {                    using (SPWeb web = site.OpenWeb())               

     {                        foreach (SPGroup group in web.SiteGroups)              
          {         
                   if (group.Name.Equals(groupName))  
                          {                            

    if (group.Users.Count > 0)                    
            {                                 
   foreach (SPUser user in group.Users)          
                          {                           
             group.Users.Remove(user.LoginName);      
                              }                           

     }                              
  break;            
                }                
        }                 
   }     

           }     


       });        
    ScriptManager.RegisterStartupScript(this, this.GetType(), "result", "alert('" + "获取并移除用户成功" + "');", true);      

  }

（4）获取组，判断组中是否存在某用户。

protected void InGroup_Click(object sender, EventArgs e)    
    {        
    string groupName = this.groupTitle.Text;  
          string userLoginName = this.userLoginName.Text;  
          string inGroup = "用户在组中";        
    SPSecurity.RunWithElevatedPrivileges(delegate()    
        {                using (SPSite site = new SPSite(SPContext.Current.Web.Url))        
        {                    using (SPWeb web = site.OpenWeb())                    {            
            SPUser user = web.EnsureUser(userLoginName);                     
   foreach (SPGroup group in user.Groups)                     
   {                            if (group.Name.Equals(groupName))                         


   {                                inGroup = "用户存在组中";                       

     }                            else                      
      {                                inGroup = "用户不存在组中";  

                          }                        }               
     }                }            });       
     ScriptManager.RegisterStartupScript(this, this.GetType(), "result", "alert('" + inGroup + "');", true);    
    }