Get SharePoint Groups a user is member of using SharePoint Client Object Model(silverlight & web service)

Get SharePoint Groups a user is member of using  SharePoint Client Object Model(silverlight & web service)

• Here i will explain how to get all groups for a specific user(who is member of those group) using silverlight and web service.
• In this code we are calling GetGroupCollectionFromUserAsync web method of the SharePoint UserGroup.asmx web service.
• You can see all kind of methods by typing the following url in browser
  http://<site url>/_vti_bin/UserGroup.asmx

Steps:

• For detiled steps see this link 
• In your silverlight program add a service reference, and type the following url
  http://<site url>/_vti_bin/UserGroup.asmx
• Give a name(I gave as UGService)
• Add the following Code.

C# Code:

// Create a object of the UserGroupSoapClient class

UGService.UserGroupSoapClient service = new UGService.UserGroupSoapClient();

  

// Define the Event handler method and Async event
service.GetGroupCollectionFromUserCompleted += new EventHandler<GetGroupCollectionFromUserCompletedEventArgs>(service_GetGroupCollectionFromUserCompleted);
service.GetGroupCollectionFromUserAsync(UserLoginName); //see this link to get user

  

//event to get the groups====================================

void service_GetGroupCollectionFromUserCompleted(object sender, GetGroupCollectionFromUserCompletedEventArgs e)
  {
   try
    {
 // e.Result will hold the xml with the User Groups returned by the web method 
  var eGroups = e.Result.Elements().Where(c => c.Name.LocalName == "Groups").First().Elements().Where(c => c.Name.LocalName == "Group").AsEnumerable();

  foreach (XElement ele in eGroups)
     {
    string GroupName = ele.Attribute("Name").Value;
     ComboBox1.Items.Add(GroupName);
     }
   }
  catch (Exception ex)
     { MessageBox.Show(ex.Message.ToString());   }
 }

To get current user detail see this link for get current user 
for more details Refer this link
Get Sharepoint Users using Silverlight and Web Service