<riaControls:DomainDataSource AutoLoad="True" d:DesignData="{d:DesignInstance my:rb_struc, CreateList=true}" 
                                      Height="0" Name="rb_strucDomainDataSource" QueryName="GetRb_strucQuery" 
                                      Width="0" Margin="0,0,360,479">
                <!--="z_plan_nameDomainDataSource_LoadedData"-->
            <riaControls:DomainDataSource.DomainContext>
                <my:myContext />
            </riaControls:DomainDataSource.DomainContext>
            <!--Фильтр загружаемых записей-->
        </riaControls:DomainDataSource>

        <riaControls:DomainDataSource AutoLoad="True" d:DesignData="{d:DesignInstance my:z_institute, CreateList=true}" 
                                      Height="0" Name="z_instituteDomainDataSource" 
                                      QueryName="GetZ_instituteQuery" Width="0" 
                                      Margin="0,0,360,479">

Таблица  1        Таблица  2 
ind  name        ind  index_1   name_2       
 1     a               1      1             Null 
 2     b               2      2             q
 3     c               3      3             w

ind  name       
 2     b              
 3     c              

   public IQueryable<rb_struc> GetRb_struc()
        {
            return this.ObjectContext.rb_struc;
        }

SELECT  rb_struc.indx, rb_struc.name
  FROM [Store].[dbo].rb_struc INNER JOIN [Store].[dbo].z_institute on 
([Store].[dbo].z_institute.indxrb=[Store].[dbo].rb_struc.indx) and ([Store].[dbo].z_institute.[delete]='delete');  

IEnumerable<EmployeeDetails> matches;
matches = from employee in employees
          select employee;

    public IEnumerable<rb_struc> GetRb_struc() 
        {
        return this.ObjectContext.rb_struc;
        }

(r => r.z_institute.delete == "delete")

protected void Page_Load(object sender, EventArgs e) 
        { 
            using (NorthwindEntities context=new NorthwindEntities()) 
            { 
                GridView1.DataSource = context.TenExpensiveProducts(); 
                GridView1.DataBind(); 
            } 
        } 

using (StoreEntities4 context=new StoreEntities4()) 

<riaControls:DomainDataSource AutoLoad="True" d:DesignData="{d:DesignInstance my:z_kaf, CreateList=true}"
                                      Height="0" Name="z_kafDomainDataSource" 
                                      QueryName="GetZ_kafQuery" Width="0" 
                                      Margin="0,0,360,479" >

 z_kafDomainDataSource.DataView.RemoveAt( 74 );
 z_kafDomainDataSource.SubmitChanges();

   public void DeleteZ_kaf(z_kaf z_kaf)
        {
            if ((z_kaf.EntityState == EntityState.Detached))
            {
..........................

 GridCellMenuInfo menuInfo = Control_kafedra.GridMenu.MenuInfo as GridCellMenuInfo;
                if (menuInfo != null && menuInfo.Row != null)
                {
                 rb_kaf ID_Plan = menuInfo.Row.Row as rb_kaf;

 GridCellMenuInfo menuInfo = Control_kafedra.GridMenu.MenuInfo as GridCellMenuInfo;
                if (menuInfo != null && menuInfo.Row != null)
                {
                    rb_kaf ID_Plan = menuInfo.Row.Row as rb_kaf;
                    ID = ID_Plan.indx;
                    Parameter p = new Parameter();
                    p.Value = ID;
                    p.ParameterName = "Idx";
                   z_kafDomainDataSource.QueryParameters.Add(p);
                   z_kafDomainDataSource.Load();
                   z_kafDomainDataSource.ClearQueryParams();
                   z_kafDomainDataSource.DataView.RemoveAt( 7 ); в место  7  хотел передать значение номера записи
                   z_kafDomainDataSource.SubmitChanges();
                }

    public IQueryable<z_kaf> GetZ_kaf(int Idx)
        {
            return this.ObjectContext.z_kaf.Include("rb_kaf").Where(r => r.indx == Idx);
        }

  public void DeleteZ_kaf(z_kaf z_kaf)
    {
.............
    }

GridCellMenuInfo menuInfo = Control_kafedra.GridMenu.MenuInfo as GridCellMenuInfo;
                if (menuInfo != null && menuInfo.Row != null)
                {
                   z_kafDomainDataSource.DataView.RemoveAt( 7 ); в место  7  хотел передать значение номера записи
                   z_kafDomainDataSource.SubmitChanges();
                }

public IQueryable<z_kaf> GetZ_kaf()
        {
            return this.ObjectContext.z_kaf;
        }

public IQueryable<z_kaf> GetZ_kaf(int Idx)
        {
            return this.ObjectContext.z_kaf.Include("rb_kaf").Where(r => r.indx == Idx);
        }

<riaControls:DomainDataSource.DomainContext>
                    <my:myContext />
</riaControls:DomainDataSource.DomainContext>

var record = myDomainContext.Z_kafs.FirstOrDefault(r => r.Idx == IdЗаписи);

   public class ResourceWrapper
    {
        public static Plan.Web.myContext CurrentDomainContext
        {
            get
            {
                return Application.Current.Resources["DomainContext"] as Plan.Web.myContext;
            }
        }
    }

var record = ResourceWrapper.CurrentDomainContext.z_kafs.FirstOrDefault(r => r.indx ==  1 );

 z_instituteDomainDataSource.Load();
    var record = ResourceWrapper.CurrentDomainContext.z_institutes.FirstOrDefault(r => r.indxrb == ID_Plan.indx);
    if (record == null)
       return;
     ResourceWrapper.CurrentDomainContext.z_institutes.Remove(record);
     ResourceWrapper.CurrentDomainContext.SubmitChanges();

gridControl_institute.RefreshData();

z_institute_procDomainDataSource.Load();

 ResourceWrapper.CurrentDomainContext.z_institutes.Remove(record);
 ResourceWrapper.CurrentDomainContext.SubmitChanges();
 z_institute_procDomainDataSource.Load();

  private void button1_Click(object sender, RoutedEventArgs e)
        {
 z_institute_procDomainDataSource.Load();
        }

   private void OnSubmitChanges(object sender, RoutedEventArgs e)
        {
            z_institute_procDomainDataSource.Load();
        }

ResourceWrapper.CurrentDomainContext.SubmitChanges(OnSubmitChanges, null);

ResourceWrapper.CurrentDomainContext.SubmitChanges(OnSubmitChanges, null);

Ошибка	 27 	Наиболее подходящий перегруженный метод для "System.ServiceModel.DomainServices.Client.DomainContext.SubmitChanges(System.Action<System.ServiceModel.DomainServices.Client.SubmitOperation>, object)" имеет несколько недопустимых аргументов