如何在vb.net中声明一个固定长度的字符串而不在赋值过程中增加长度 [英] How to declare a fixed length string in vb.net without increasing the length during assignment

问题描述

我有一个固定长度的字符串变量:

I have a fixed length string variable:

<VBFixedString(10)>
Public myVar As String

当我将 var 分配给具有 11 个字符的值时，var 会改变长度.

When I assign the var to a value that has 11 chars the var changes length.

这是我得到的:

  myvar = "1234567890ABCD" ' result = myvar being "1234567890ABCD"

我想要的是 myvar 是:1234567890"

What I want is myvar to be: "1234567890"

然后如果它小于 10 我想要

and then if it is less than 10 I would like

myvar = "12345" to be "12345     "

我可以用 PadLeft PadRight 做到这一点，但想知道我是否可以将它声明为固定长度，它会为你处理所有这些.

I can do this with PadLeft PadRight but was wondering if I can declare it as a fixed length and it would handle all that for you.

推荐答案

和老派一样，LSET 将完全满足您的要求.

and from the old school, LSET will do exactly what you're asking.

 myvar = lset("1234567890ABCD",10)

结果为1234567890"，而

results in "1234567890", while

 myvar = lset("12345",10)

结果为12345___" - 抱歉，编辑器在将 12345 替换为下划线后修剪了空格

results in "12345___" - sorry, the editor trimmed the spaces after the 12345 replaced with underscores

请参阅 LSET 的 MSDN 条目

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