复合物“包含”于字符串比较 [英] Complex "Contains" string comparison

问题描述

我正在开发C＃4.5应用程序，我需要一个函数返回true，以进行以下比较：

I'm developing a C# 4.5 app and I need a function to return true for the following comparison:

blaLéOnArd / o bla .ComplexContains（ leonardo）

"bla LéOnAr d/o bla".ComplexContains("leonardo")

换句话说，我需要 string.Compare（ str1，str2，CultureInfo.InvariantCulture，CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols | CompareOptions.IgnoreNonSpace）还要检查包含！

In other words, I need string.Compare(str1, str2, CultureInfo.InvariantCulture, CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols | CompareOptions.IgnoreNonSpace) to also check for "contains!

Can有人帮忙吗？

推荐答案

您可以使用适当的 CompareInfo ，然后< a href = http://msdn.microsoft.com/zh-cn/library/b7zs7dcf.aspx rel = noreferrer> CompareInfo.IndexOf（string，string，CompareOptions） 并对照-1检查结果。示例：

You could use an appropriate CompareInfo and then CompareInfo.IndexOf(string, string, CompareOptions) and check the result against -1. Sample:

using System;
using System.Globalization;

class Program
{
    static void Main()
    {
        var compareInfo = CultureInfo.InvariantCulture.CompareInfo;
        var options = CompareOptions.IgnoreCase | 
            CompareOptions.IgnoreSymbols |
            CompareOptions.IgnoreNonSpace;

        var haystack = "bla Lé OnAr d/o bla";
        var needle = "leonardo";

        var index = compareInfo.IndexOf(haystack, needle, options);
        Console.WriteLine(index); // 4
    }
}

或以方法形式：

private static bool ComplexContains(string source, string value)
{
    var index = CultureInfo.InvariantCulture.CompareInfo.IndexOf
        (source, value, CompareOptions.IgnoreCase | 
         CompareOptions.IgnoreSymbols | CompareOptions.IgnoreNonSpace);
    return index != -1;
}

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