Method to return all user information in table from a people picker

Question

Can you please help me to get username ,email from a people picker control.

I want this in the same method.

for example if i enter 2 groups in people picker control then it should return

his Name and Email address in the same method. if it is of table then it would be gr8

Below is the sample code In this method i want to retuen as table.... for group as well as notmal users

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;

namespace GETEMAILSFROMPEOPLEPICKER
{
    public static class SPFieldUserValueCollectionExtensions
   {     
       public static IEnumerable<string> GetAllEmails(this SPFieldUserValueCollection collection, SPWeb web) 
       {
           //System.Diagnostics.Debugger.Break();

           var emails = new HashSet<string>();

           foreach (var item in collection)  
           {        
               if (item.User == null)  
               {          
                   try  
                   {   
                       // is it a SharePoint group?   
                       var group = web.SiteGroups.GetByID(item.LookupId); 
                       emails.AddEmailsFromSPGroup(group);

                   }           
                   catch    
                   {  

                      // ad group  
                       var group = web.EnsureUser(item.LookupValue); 
                       emails.AddIfNotNull(group.Email);   
                   }          
               }            
               else           
               {               
                   emails.AddIfNotNull(item.User.Email);  
               }      
           }         
           return emails;  
       }
       private static void AddEmailsFromSPGroup(this HashSet<string> emails,SPGroup group)  
       {       
           if (!string.IsNullOrEmpty(group.DistributionGroupEmail))   
           {        
               emails.Add(group.DistributionGroupEmail); 
           }         
           else      
           {         
               foreach (SPUser user in group.Users)    
               {    
                   emails.AddIfNotNull(user.Email);    
               }      
           }    
       }      

       private static void AddIfNotNull(this HashSet<string> set, string s)   
       {
           if(!string.IsNullOrEmpty(s)) 
           {           
               set.Add(s); 
           }     
       }

       public static IEnumerable<string> GetAllLoginNames(this SPFieldUserValueCollection collection, SPWeb web)
       {
            var usernames = new HashSet<string>();

            foreach (var item in collection)
            {
                if (item.User == null)
                {
                    try
                    {
                        // is it a SharePoint group?   
                        var group = web.SiteGroups.GetByID(item.LookupId);

                        usernames.UserNamesFromSPGroup(group);
                    }
                    catch
                    {

                        // ad group  
                        var group = web.EnsureUser(item.LookupValue);
                        usernames.IfNotNull(group.Name);
                    }
                }
                else
                {
                    usernames.AddIfNotNull(item.User.Name);
                }
            }   
            return usernames;

       }

       private static void UserNamesFromSPGroup(this HashSet<string> usernames, SPGroup group)
       {
           if (!string.IsNullOrEmpty(group.DistributionGroupEmail))
           {
               usernames.Add(group.DistributionGroupAlias);
           }
           else
           {
               foreach (SPUser user in group.Users)
               {
                   usernames.AddIfNotNull(user.Name);
               }
           }
       }

       private static void IfNotNull(this HashSet<string> set, string s)
       {
           if (!string.IsNullOrEmpty(s))
           {
               set.Add(s);
           }
       }
   } 

}

Answer 1

Replace:

var emails = new HashSet<string>();

With:

DataTable emails = new DataTable();
emails.Columns.Add("username");
emails.Columns.Add("emailAddress");

Now, everywhere where you're using a HashSet<string>, use that DataTable instead. When adding items, do it this way:

DataRow newRow = emails.NewRow();
newRow["username"] = /*add the user name here*/
newRow["emailAddress"] = /*add the user email address here*/
emails.Rows.Add(newRow);

When you're done, you'll have your users and their email addresses in a tabular format. You'll even be able to use that emails object as the datasource for a GridView.

Don't forget to put a using System.Data at the top of the code.