Convert Lambda from C# to VB.NET

Question

How would I translate this C# lambda expression into VB.NET ?

query.ExecuteAsync(op => op.Results.ForEach(Employees.Add));

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using IdeaBlade.Core;
using IdeaBlade.EntityModel;

namespace SimpleSteps
{
    public class MainPageViewModel
    {
        public MainPageViewModel()
        {
            Employees = new ObservableCollection();
            var mgr = new NorthwindIBEntities();
            var query = mgr.Employees;
            query.ExecuteAsync(op => op.Results.ForEach(Employees.Add));
        }

    public ObservableCollection<Employee> Employees { get; private set; }
}


}

        // Summary:
    //     Execute the query asynchronously.  IdeaBlade.EntityModel.EntityManager.ExecuteQueryAsync()
    //
    // Parameters:
    //   query:
    //     This query
    //
    // Type parameters:
    //   T:
    //     Entity type returned
    public static EntityQueryOperation<T> ExecuteAsync<T>(this IEntityQuery<T> query);
    //
    // Summary:
    //     Execute the query asynchronously.  IdeaBlade.EntityModel.EntityManager.ExecuteQueryAsync()
    //
    // Parameters:
    //   query:
    //     This query
    public static EntityQueryOperation ExecuteAsync(this IEntityQuery query);
    //
    // Summary:
    //     Execute the query asynchronously.  IdeaBlade.EntityModel.EntityManager.ExecuteQueryAsync()
    //
    // Parameters:
    //   query:
    //     This query
    //
    //   userCallback:
    //     Callback invoked when the query completes
    //
    //   userState:
    //     Token to identify the query upon completion
    //
    // Type parameters:
    //   T:
    //     Entity type returned
    //
    // Remarks:
    //     Provide a userCallback if you want to be notified when the operation completes.
    //      The query results will be returned in the IdeaBlade.EntityModel.EntityQueriedEventArgs
    //     passed to the userCallback.  Use the userState to uniquely identify this
    //     call.
    public static EntityQueryOperation<T> ExecuteAsync<T>(this IEntityQuery<T> query, Action<EntityQueryOperation<T>> userCallback, object userState = null);
    //
    // Summary:
    //     Execute the query asynchronously.  IdeaBlade.EntityModel.EntityManager.ExecuteQueryAsync()
    //
    // Parameters:
    //   query:
    //     This query
    //
    //   userCallback:
    //     Callback invoked when the query completes
    //
    //   userState:
    //     Token to identify the query upon completion
    //
    // Remarks:
    //     Provide a userCallback if you want to be notified when the operation completes.
    //      The query results will be returned in the IdeaBlade.EntityModel.EntityQueriedEventArgs
    //     passed to the userCallback.  Use the userState to uniquely identify this
    //     call.`

already try it,gives error Error 1 Overload resolution failed because no accessible 'ExecuteAsync' can be called with these arguments — Iosu
Again, what is the definition of ExecuteAsync? The IdeaBlade site doesn't provide any documentation. We need to know the actual signature of the method (what parameters it expects, all of the overloads, etc.) — Adam Robinson

Adam Robinson Adam Robinson · Accepted Answer · 2010-04-20T18:38:43

Starting with 2010, VB10 supports non-functional lambdas.

query.ExecuteAsync(Sub(op) op.Results.ForEach(Employees.Add))

Convert Lambda from C# to VB.NET

3 Answers