any way to get sharepoint groups with a given site url - sharepoint

Question

I'm getting a stuck. Suppose that I create 5 sites. For each one, I create a few sharepoint groups. So, I create a dropdownlist control to bind 5 sites and when I click on any site there, I will get sharepoint groups created on it. But I always see the dropdownlist used to bind these groups still never change. I mean it only binds a few default groups in sahrepoint everytime. The new created groups is not.
And I have confusion like this
web.AssociatedGroups
web.Groups
web.SiteGroups
which one we will use this case ? Please guide me
Here my snippet code
private void BindSPGroupsToDropDownList(DropDownList ddl, string siteUrl)
{
ddl.Items.Clear();
try
{
SPSecurity.RunWithElevatedPrivileges(delegate()
{
using (SPSite site = new SPSite(siteUrl))
{
using (SPWeb web = site.OpenWeb())
{
//web.SiteGroups
foreach (SPGroup spGroup in web.Groups)
{
ddl.Items.Add(new ListItem(spGroup.Name.Trim(), spGroup.ID.ToString()));
}
}
}
});
}
}
thanks in advance

Answer 1

You don't show how you add groups, so it is hard to see why you can't list them.
Some considerations:
groups are scoped at the site collection level, i.e. there is no notion of groups at the web (SPWeb) level; only at the SPSite level
I wrote code a couple of years ago for managing groups, so I don't remember the difference between the different properties. Looking at my code, I used SPWeb.SiteGroups to test if a group exists and to add a new group.
Here is my - slightly anonymized - code:
public static void CreateSiteGroup(SPSite site, string strGroupName, string strGroupDesc, string strGroupOwner) {
if (site == null) {
string message = GetMessagePrefix() + " Site is null";
XxxLog.Error(XxLogEventId.Common, message, XxxLogCategory.CommonBusiness);
} else if (String.IsNullOrEmpty(strGroupName)) {
string message = GetMessagePrefix() + " The group name is empty";
XxxLog.Error(XxxLogEventId.Common, message, XxxLogCategory.CommonBusiness);
} else {
try {
using (SPWeb rootWeb = site.RootWeb) {
SPMember owner;
if (String.IsNullOrEmpty(strGroupOwner)) {
owner = rootWeb.CurrentUser;
} else {
if (!ContainsGroup(site, strGroupOwner)) {
string message = GetMessagePrefix() + " Can not find owner group name: " + strGroupOwner;
XxxLog.Error(XxxLogEventId.Common, message, XxxLogCategory.CommonBusiness);
return;
} else {
owner = rootWeb.SiteGroups[strGroupOwner];
}
}
if (!ContainsGroup(site, strGroupName)) {
rootWeb.SiteGroups.Add(strGroupName,
owner,
null, // no default user
strGroupDesc);
} else {
string message = GetMessagePrefix() + " The group " + strGroupName + " was already present";
XxxLog.Info(message, XxxLogCategory.CommonBusiness);
}
}
} catch (Exception e) {
string message = GetMessagePrefix() + " Cannot create " + strGroupName + " group";
XxxLog.Error(XxxLogEventId.Common, message,e, XxxLogCategory.CommonBusiness);
}
}
}
public static Boolean ContainsGroup(SPSite site, string name) {
SPGroup group = null;
using (SPWeb rootWeb = site.RootWeb) {
foreach (SPGroup g in rootWeb.SiteGroups) {
if (g.Name.ToUpper().Equals(name.ToUpper())) {
group = g;
break;
}
}
}
return (group != null);
}