什么等于“(字节)"?在VB.NET中? [英] What is the equivalent of "(byte)" in VB.NET?

问题描述

在VB.NET中等效于(byte):

C#:

  uint值= 1161;字节数据=(字节)值; 

数据= 137

VB.NET:

 作为UInteger的Dim值= 1161Dim data1 As Byte = CType(value，Byte)Dim data2 As Byte = CByte(value) 

异常:算术运算导致溢出.

如何获得与C#相同的结果?

解决方案

默认情况下，C#不会检查整数溢出，但VB.NET会检查.

例如，如果您在C#中遇到相同的异常，将您的代码包装在 checked 块中:

 已选中{uint值= 1161;字节数据=(字节)值;} 

---

在您的VB.NET项目属性中，启用配置属性 => 优化 => 删除整数溢出检查，以及您的VB.NET代码将完全像您的C#代码一样工作.

然后为整个项目禁用整数溢出检查，但这通常不是问题.

What is the equivalent of (byte) in VB.NET:

C#:

uint value = 1161;
byte data = (byte)value;

data = 137

VB.NET:

  Dim value As UInteger = 1161
  Dim data1 As Byte = CType(value, Byte)
  Dim data2 As Byte = CByte(value)

Exception: Arithmetic operation resulted in an overflow.

How can I achieve the same result as in C#?

解决方案

By default, C# does not check for integer overflows, but VB.NET does.

You get the same exception in C# if you e.g. wrap your code in a checked block:

checked
{
    uint value = 1161;
    byte data = (byte)value;
}

---

In your VB.NET project properties, enable Configuration Properties => Optimizations => Remove Integer Overflow Checks, and your VB.NET code will work exactly like your C# code.

Integer overflow checks are then disabled for your entire project, but that's usually not a problem.

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