vb.net - 与此 C# 代码等效的 VB.NET 是什么？

Question

VB.NET 相当于这个 C# 代码吗？

    ctx.Load(site,
                x => x.Lists.Where(l => l.Title != null));

我试过了

 ctx.Load(site, Function(x) x.Lists.Where(Function(l) l.Title IsNot Nothing))

但是这个错误 "The expression (Convert(l.Title) != null) is not supported."
想法

Answer 1

如果标题是字符串尝试使用 IsNullOrEmpty();

或者

Nullable(Of T).HasValue 如果标题为 Nullable

或者

Sub Main()

        Dim list As New List(Of A)

        Dim a1 As New A
        a1.Title = "sqws"
        Dim a2 As New A
        a2.Title = Nothing


        list.Add(a1)
        list.Add(a2)

        Dim q = From c In list Where c.Title IsNot Nothing

    End Sub



    Public Class A

        Dim t As String

        Public Property Title() As String
            Get
                Title = t
            End Get
            Set(ByVal value As String)
                t = value
            End Set
        End Property

    End Class