Programmatically to list the groups of the current user in a web form sharepoint 2010 foundation

Question

How me in web form to list the groups the current user checkboxes to select one or more groups? What would then set the permission to a document on the basis of chosen groups?

I'm doing it right:

using System;
using System.ComponentModel;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
namespace CustomGroupAssignment.VisualWebPart1
{
    public partial class VisualWebPart1UserControl : UserControl
    {
        protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            SPSite site = new SPSite(SPContext.Current.Web.Url);
            SPWeb web = site.OpenWeb();
            SPUser currentUser = web.CurrentUser;
            SPDocumentLibrary docLib = (SPDocumentLibrary)web.Lists["Test_Doc_Lib"];
           // CheckBoxList1 = new CheckBoxList();
            SPGroupCollection webGroups = currentUser.Groups;
            CheckBoxList1.DataSource = webGroups;
            CheckBoxList1.DataValueField = "ID";
            CheckBoxList1.DataTextField = "Name";
            CheckBoxList1.DataBind();


        //Break the role inheritance from List and remove any RoleAssignments
        docLib.BreakRoleInheritance(false);
        while (docLib.RoleAssignments.Count > 0)
        {
            docLib.RoleAssignments.Remove(0);
        }

        foreach (ListItem li in CheckBoxList1.Items)
        {
            if (li.Selected)
            {
                // Give permissions to a specific group
                SPGroup group = web.Groups.GetByID(Convert.ToInt32(li.Value));
                SPPrincipal principalGroup = group;
                SPRoleAssignment roleassignment_group = new SPRoleAssignment(group);
                SPRoleAssignment roleAssignment = web.RoleAssignments.GetAssignmentByPrincipal(principalGroup);

                docLib.RoleAssignments.Add(roleAssignment);
            }
        }
    }
}

}

Answer 1

You can bind the existing groups in your SPUser by something like:

SPGroupCollection webGroups = currentUser.Groups;
checkboxlist.DataSource = webGroups;
checkboxlist.DataValueField = "ID";
checkboxlist.DataTextField = "Name";
checkboxlist.DataBind();

Then for giving permissions to particular document/list item.. Iterate through the selected groups by user and do something like:

//Break the role inheritance from List and remove any RoleAssignments
item.BreakRoleInheritance(false);
while (item.RoleAssignments.Count > 0)  
{ 
    item.RoleAssignments.Remove(0); 
}

foreach (ListItem li in checkboxlist.Items)
{
    if (li.Selected)
    {
        // Give permissions to a specific group
        SPGroup group = web.Groups.GetByID(Convert.ToInt32(li.Value));
        SPPrincipal principalGroup = group;
        SPRoleAssignment roleassignment_group = new SPRoleAssignment(group);
        SPRoleAssignment roleAssignment = workspace.RoleAssignments.GetAssignmentByPrincipal(principalGroup);

        item.RoleAssignments.Add(roleAssignment);
    }
}