如何删除列表字符串的重复字符串 [英] How to remove duplicate strings of list string

问题描述

HI，



我需要删除列表字符串的重复字符串



任何人都可以帮助我解决这个问题





谢谢

John

I need to remove duplicate strings of list string

Can anyone help me in solving this


Thanks
John

推荐答案

使用它：



List< string> distinct = list.Distinct（）。ToList（）;

Use it:

List<string> distinct = list.Distinct().ToList();

使用 Distinct [ ^ ]方法。



例如

Use the Distinct[^] method from LINQ.

e.g.

IList<string> list = new List<string>
	{
		"a",
		"b",
		"A",
		"c",
		"d"
	};

Console.WriteLine(String.Join(", ", list)); // prints a, b, A, c, d

// Case sensitive comparison
list = list.Distinct().ToList();
Console.WriteLine(String.Join(", ", list)); // prints a, b, A, c, d

// In case you want to use case insensitive, invariant culture comparison, use this one. Different comparers are available: http://msdn.microsoft.com/en-us/library/system.stringcomparer(v=vs.110).aspx
list = list.Distinct(StringComparer.InvariantCultureIgnoreCase).ToList();
Console.WriteLine(String.Join(", ", list)); // prints a, b, c, d

试用代码

Try out with code

List<string> list = new List<string>();
            list.Add("1");
            list.Add("2");
            list.Add("5");
            list.Add("5");
            list.Add("2");
            list.Add("3");
            list.Add("7");

            // Get distinct elements and convert again into a list.
            List<string> distinct = list.Distinct().ToList();

            foreach (string value in distinct)
            {
                Console.WriteLine("Distinct : {0}", value);
            }

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