vb.net – 一般最好使用 – StringComparison.OrdinalIgnoreCase

发布时间：2020-12-17 07:32:55 所属栏目：百科来源：网络整理

导读：我有一些代码这样： If key.Equals("search",StringComparison.OrdinalIgnoreCase) Then DoSomething()End If 我不在乎情况。我应该使用OrdinalIgnoreCase，InvariantCultureIgnoreCase还是CurrentCultureIgnoreCase？从MSDN的“ New Recommendations for U

我有一些代码这样：

If key.Equals("search",StringComparison.OrdinalIgnoreCase) Then
    DoSomething()
End If

我不在乎情况。我应该使用OrdinalIgnoreCase，InvariantCultureIgnoreCase还是CurrentCultureIgnoreCase？

从MSDN的“ New Recommendations for Using Strings in Microsoft .NET 2.0”

Summary: Code owners previously using the InvariantCulture for string comparison,casing,and sorting should strongly consider using a new set of String overloads in Microsoft .NET 2.0. Specifically,data that is designed to be culture-agnostic and linguistically irrelevant should begin specifying overloads using either the StringComparison.Ordinal or StringComparison.OrdinalIgnoreCase members of the new StringComparison enumeration. These enforce a byte-by-byte comparison similar to strcmp that not only avoids bugs from linguistic interpretation of essentially symbolic strings,but provides better performance. (15 printed pages)

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