UInt32 到 Int32 [英] UInt32 to Int32

问题描述

如果我有一个返回 Int32 的 VB.Net 函数，但使用无符号 int (UInt32) 进行计算等.如何将值为3392918397"的变量MyUintVar32"转换为标准 Int32VB.Net?

If I have a VB.Net function that returns an Int32, but uses an unsigned int (UInt32) for calculations, etc. How can I convert a variable "MyUintVar32" with a value of say "3392918397 into a standard Int32 in VB.Net?

在 c# 中，如果我只是执行return (int)(MyUintVar32);"，我会得到 -902048899，而不是错误.

In c# if I just do a "return (int)(MyUintVar32);", I get -902048899, not an error.

我尝试了几种不同的方法.c# 处理这些转换的方式与 VB.Net 有什么不同?

I've tried several different methods. What is the difference in the way c# handles these conversions versus VB.Net?

推荐答案

我意识到这是一个旧帖子，但问题尚未得到解答.我想认识的其他人:

I realize this is an old post, but the question has not been answered. Other people my want to know:

Dim myUInt32 As UInt32 = 3392918397  
Dim myInt32 As Int32 = Convert.ToInt32(myUInt32.ToString("X"), 16)  

反向操作:

myUInt32 = Convert.ToUInt32(myInt32.ToString("X"), 16)

此外，可以创建一个联合结构来轻松地在 Int32 和 UInt32 之间转换:

Also, one can create a union structure to easily convert between Int32 and UInt32:

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Explicit)> _    
  Public Structure UnionInt32  
  <FieldOffset(0)> _  
  Public IntValue As Int32  
  <FieldOffset(0)> _  
  Public UIntValue As UInt32  
End Structure  

Dim MyUnionInt32 as UnionInt32  
MyUnionInt32.UIntValue = 3392918397  
Dim IntVal as Int32 = MyUnionInt32.UIntValue  '= -902048899 

反向操作:

MyUnionInt32.IntValue = -902048000  
Dim UIntVal as UInt32 = MyUnionInt32.UIntValue  '= 3392919296  

干杯，TENware

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