private object GetUserValue(SPListItem item, object value)
{
object valueResult = null;
var personInfo = (User)value;
if (personInfo.ID != 0)
{
valueResult = new SPFieldUserValue(item.Web, personInfo.ID, personInfo.UserName);
}
else if (personInfo.IsGroup)
{
SPGroup group = item.Web.Groups.GetByID(personInfo.ID);
if (@group != null)
{
valueResult = new SPFieldUserValue(item.Web, @group.ID, @group.LoginName);
}
}
else
{
SPUser userOrGroupToAdd = string.IsNullOrEmpty(SiteUrl)
? SPHelper.EnsureUser(SPHelper.GetAccountName(personInfo.UserName))
: SPHelper.EnsureUser(
SPHelper.GetAccountName(personInfo.UserName), SiteUrl);
if (userOrGroupToAdd != null)
{
valueResult = new SPFieldUserValue(item.Web, userOrGroupToAdd.ID,
userOrGroupToAdd.LoginName);
}
}
return(valueResult);
}
private static SPFieldUserValueCollection FormatUserCollection(IEnumerable <User> usersList,
SPListItem item,
string siteUrl = null)
{
var userValueCollection = new SPFieldUserValueCollection();
foreach (User user in usersList)
{
if (user.IsGroup)
{
SPGroup group = item.Web.Groups.GetByID(user.ID);
if (group != null)
{
userValueCollection.Add(new SPFieldUserValue(item.Web, group.ID, group.LoginName));
}
}
else
{
SPUser spuser = string.IsNullOrEmpty(siteUrl)
? SPHelper.EnsureUser(SPHelper.GetAccountName(user.UserName))
: SPHelper.EnsureUser(SPHelper.GetAccountName(user.UserName), siteUrl);
if (spuser != null)
{
userValueCollection.Add(new SPFieldUserValue(item.Web, spuser.ID, user.UserName));
}
else
{
throw new ArgumentException(
string.Format("User {0} not found in the {1} webapplication", user.UserName, item.Web.Title),
"usersList");
}
}
}
return(userValueCollection);
}