Check if specified user belongs to specific group or not

Question

I have implemented a site and have added a SharePoint group called "SG_Uploader".

In this group, I ONLY have one Active Directory group called "AD_L6" and there are many users in AD_L6.

If a user comes to site and I want to check if he can upload a document, I use below code which is very simple:

SPWeb web = // ...
SPGroup group = web.SiteGroups["SG_Uploader"];
if (group.ContainsCurrentUser)
{
    // allow user to upload
}

Now, I want to do the same thing, not for current user but for a specific user that I have his username. By that mean I want to write a code like

SPWeb web = // ...
SPGroup group = web.SiteGroups["SG_Uploader"];
if (group.ContainsUser(username))
{
    // allow user to upload
}

I could not figure out who I can do that. Please advise.

Answer 1

Use DoesUserHavePermissions to check if user has permissions to upload.

web.DoesUserHavePermissions(web.CurrentUser,
                   SPBasePermissions.AddListItems);