Cannot set permission for documents on Visual web part Sharepoint 2010 Foundation - visual-studio-2010

Question

Good day! I have an event handler that, when you add a document to the library redirects the user to a web form with the parameters of the document. In the web form, it displays the current user in the form of Checkboxlist. The user selects the appropriate group, and he presses the Save button. Following are assigned permissions to the document according to the selected group. The problem is that the resolution of the document is not assigned according to selected groups. Here's the handler code:
using System;
using System.Security.Permissions;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Utilities;
using Microsoft.SharePoint.Workflow;
using System.Web;
using System.IO;
namespace SharePointProject3.EventReceiver2
{
/// <summary>
/// События элемента списка
/// </summary>
public class EventReceiver2 : SPItemEventReceiver
{
private HttpContext _context;
public EventReceiver2()
{
_context = HttpContext.Current;
}
public override void ItemAdding(SPItemEventProperties properties)
{
//Временно отключаем срабатывание обработчика
EventFiringEnabled = false;
//Получаем файл из HttpContext
HttpPostedFile file = _context.Request.Files[0];
Stream fileStream = file.InputStream;
byte[] fileByte = new byte[file.ContentLength];
fileStream.Read(fileByte, 0, file.ContentLength);
//Загружаем файл в библиотеку документов
SPFile fileUploded = properties.Web.Files.Add(properties.AfterUrl, fileByte);
//Включаем обработчик обратно
EventFiringEnabled = true;
//Отменяем добавление файла, которое делал пользователь
properties.Cancel = true;
properties.Status = SPEventReceiverStatus.CancelWithRedirectUrl;
//Деламе редирект
properties.RedirectUrl = properties.Web.Url + "/test_perm/default.aspx?ID=" + fileUploded.UniqueId;
}
}
}
And here's the code of the Web Part:
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;
using System.Text;
using Microsoft.SharePoint.Utilities;
namespace CustomGroupAssignment.VisualWebPart1
{
public partial class VisualWebPart1UserControl : UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
using (SPSite site = new SPSite("http://kviten:83/"))
{
using (SPWeb web = site.OpenWeb())
{
SPUser currentUser = web.CurrentUser;
SPDocumentLibrary docLib = (SPDocumentLibrary)web.Lists["Test_Doc_Lib"];
SPGroupCollection webGroups = currentUser.Groups;
CheckBoxList1.DataSource = webGroups;
CheckBoxList1.DataValueField = "ID";
CheckBoxList1.DataTextField = "Name";
CheckBoxList1.DataBind();
foreach (ListItem li in CheckBoxList1.Items)
{
li.Selected = true;
}
try
{
string itemID = Page.Request.Params["ID"];
SPDocumentLibrary doclib = (SPDocumentLibrary)web.GetList(SPUrlUtility.CombineUrl(web.Url, "/DocLib2/Forms/AllItems.aspx"));
SPListItem item = doclib.GetItemByUniqueId(new Guid(itemID));
}
catch (Exception ex)
{
//Выводим ошибку
}
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
using (SPSite site = new SPSite("http://kviten:83/"))
{
using (SPWeb web = site.OpenWeb())
{
SPUser currentUser = web.CurrentUser;
SPDocumentLibrary docLib = (SPDocumentLibrary)web.Lists["Test_Doc_Lib"];
try
{
string itemID = Page.Request.Params["ID"];
SPDocumentLibrary doclib = (SPDocumentLibrary)web.GetList(SPUrlUtility.CombineUrl(web.Url, "/Test_Doc_Lib/"));
SPListItem item = doclib.GetItemByUniqueId(new Guid(itemID));
//Break the role inheritance from List and remove any RoleAssignments
//item.BreakRoleInheritance(false);
//while (item.RoleAssignments.Count > 0)
//{
// item.RoleAssignments.Remove(0);
//}
if (!item.HasUniqueRoleAssignments)
{
item.ResetRoleInheritance();
item.Update();
item.BreakRoleInheritance(false);
item.Update();
}
foreach (ListItem li in CheckBoxList1.Items)
{
if (li.Selected) //Response.Write("- " + li.Text + "<br/>");
{
// 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 = item.RoleAssignments.GetAssignmentByPrincipal(principalGroup);
item.RoleAssignments.Add(roleAssignment);
item.Update();
}
}
}
catch (Exception ex)
{
//Выводим ошибку
}
Context.Response.Write("<script type='text/javascript'>window.frameElement.commitPopup();</script>");
Context.Response.Flush();
Context.Response.End();
}
}
}
protected void btnCancel_Click(object sender, EventArgs e)
{
Context.Response.Write("<script type='text/javascript'>window.frameElement.commitPopup();</script>");
Context.Response.Flush();
Context.Response.End();
}
}
}
I can not understand why I cannot assign permissions to the document! Help please!
If you use the / / Response.Write ("-" + li.Text + "<br/>"); which commented out, we can see that the checkboxes are not selected and not displayed. item.ResetRoleInheritance(); executed and permission assigned to only the current user with no groups. In what could be the reason?

Answer 1

The right solution for a web part:
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;
using System.Text;
using Microsoft.SharePoint.Utilities;
namespace CustomGroupAssignment.VisualWebPart1
{
public partial class VisualWebPart1UserControl : UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) {
using (SPSite site = new SPSite("http://kviten:83/"))
{
using (SPWeb web = site.OpenWeb())
{
SPUser currentUser = web.CurrentUser;
SPDocumentLibrary docLib = (SPDocumentLibrary)web.Lists["Test_Doc_Lib"];
SPGroupCollection webGroups = currentUser.Groups;
CheckBoxList1.DataSource = webGroups;
CheckBoxList1.DataValueField = "ID";
CheckBoxList1.DataTextField = "Name";
CheckBoxList1.DataBind();
foreach (ListItem li in CheckBoxList1.Items)
{
li.Selected = true;
}
try
{
string itemID = Page.Request.Params["ID"];
SPDocumentLibrary doclib = (SPDocumentLibrary)web.GetList(SPUrlUtility.CombineUrl(web.Url, "/DocLib2/Forms/AllItems.aspx"));
SPListItem item = doclib.GetItemByUniqueId(new Guid(itemID));
}
catch (Exception ex)
{
//Выводим ошибку
}
}
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
using (SPSite site = new SPSite("http://kviten:83/"))
{
using (SPWeb web = site.OpenWeb())
{
SPUser currentUser = web.CurrentUser;
SPDocumentLibrary docLib = (SPDocumentLibrary)web.Lists["Test_Doc_Lib"];
string itemID = Page.Request.Params["ID"];
SPDocumentLibrary doclib = (SPDocumentLibrary)web.GetList(SPUrlUtility.CombineUrl(web.Url, "/Test_Doc_Lib/"));
SPListItem item = doclib.GetItemByUniqueId(new Guid(itemID));
foreach (ListItem li in CheckBoxList1.Items)
{
if (li.Selected) //Response.Write("- " + li.Text + "<br/>");
{
if (!item.HasUniqueRoleAssignments)
{
item.ResetRoleInheritance();
item.Update();
}
item.BreakRoleInheritance(false);
item.Update();
SPGroup group = web.Groups.GetByID(Convert.ToInt32(li.Value));
SPPrincipal principalGroup = (SPPrincipal)group;
//SPRoleAssignment roleassignment_group = new SPRoleAssignment(principalGroup);
SPRoleAssignment roleAssignment = item.Web.RoleAssignments.GetAssignmentByPrincipal(principalGroup);
item.RoleAssignments.Add(roleAssignment);
item.Update();
// var roleAssignment = new SPRoleAssignment(principalGroup);
// item.RoleAssignments.Add(roleAssignment);
// item.Update();
}
}
Context.Response.Write("<script type='text/javascript'>window.frameElement.commitPopup();</script>");
Context.Response.Flush();
Context.Response.End();
}
}
}
protected void btnCancel_Click(object sender, EventArgs e)
{
Context.Response.Write("<script type='text/javascript'>window.frameElement.commitPopup();</script>");
Context.Response.Flush();
Context.Response.End();
}
}
}