C# 如何使 String.Contains 不区分大小写?
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时间:2020-08-10 09:50:51 来源:igfitidea点击:
How to make String.Contains case insensitive?
提问by CJ7
How can I make the following case insensitive?
如何使以下不区分大小写?
myString1.Contains("AbC")
回答by Kamil Budziewski
bool b = list.Contains("Hello", StringComparer.CurrentCultureIgnoreCase);
[EDIT] extension code:
[编辑] 扩展代码:
public static bool Contains(this string source, string cont
, StringComparison compare)
{
return source.IndexOf(cont, compare) >= 0;
}
This could work :)
这可以工作:)
回答by joe
You can use:
您可以使用:
if (myString1.IndexOf("AbC", StringComparison.OrdinalIgnoreCase) >=0) {
//...
}
This works with any .NET version.
这适用于任何 .NET 版本。
回答by Tobia Zambon
You can create your own extension method to do this:
您可以创建自己的扩展方法来执行此操作:
public static bool Contains(this string source, string toCheck, StringComparison comp)
{
return source != null && toCheck != null && source.IndexOf(toCheck, comp) >= 0;
}
And then call:
然后调用:
mystring.Contains(myStringToCheck, StringComparison.OrdinalIgnoreCase);

