SPSite   spSite   =   new   SPSite( "http://wangbin:1979 "); 
                SPWeb   web   =   spSite.OpenWeb( "temp "); 
              web.AllowUnsafeUpdates   =   true; 
                SPList   MyList   =   web.Lists[ "temp "]; 
  try 
                { 
                        SPListItem   MyListItem   =   MyList.Items.Add(); 
                        MyListItem[ "Title "]   =   TextBox1.Text.ToString(); 
                        MyListItem.Update(); 
if   (!MyListItem.HasUniqueRoleAssignments) 
                                { 
                                        MyListItem.BreakRoleInheritance(true   ); 
                                } 
                        SPRoleAssignmentCollection   roleAssCol   =   MyListItem.RoleAssignments; 
                        for   (int   i   =   0;   i   <   roleAssCol.Count;   i++) 
                        { 
                                SPPrincipal   principal   =   roleAssCol[i].Member; 
                                if   ( "temp ".Equals(principal.Name)) 
                                { 
                                        //通過每個權(quán)限所對應(yīng)的ID，刪除權(quán)限 
                                        roleAssCol.RemoveById(principal.ID); 
                                } 
                          } 
                } 
                catch   (Exception   ex) 
                { 
                        Response.Write(ex.ToString()); 
                }