VB.NET相当于C＃“As”

Question

什么是VB.NET中的C＃相当于由于关键字，如下所示？

var x = y as String; 
if (x == null) ... 

Answer 1

它是TryCast:

Dim x As String = TryCast(y, String) 
If x Is Nothing Then ... 

Answer 2

昏暗X = TryCast（Y，[字符串]）

Answer 3

Dim x = TryCast(y, [String]) 

来自：http://www.developerfusion.com/tools/convert/csharp-to-vb/

Answer 4

TryCast：

Dim x = TryCast(y, String) 
if (x Is Nothing) ... 

Answer 5

Trycast就是你要找的东西。

Dim x = TryCast(y, String) 

Answer 6

在这里你去：

C＃代码：

var x = y as String; 
if (x == null) ... 

VB.NET相当于：

Dim x = TryCast(y, String) 
If (x Is Nothing) ...