c# - 查找字符串中的换行数并获取字符串中的换行数 C#

Question

谁能建议如何在字符串中找到换行符的数量。在下面的示例代码中，我有两条断线。那么如何打印显示数字为 2

String Str = "Hello <br /> How are You <br />"

谢谢！

Answer 1

这是您需要的：

    String Str = @"Hello <br/> How do you feel about strange but valid <br          

                 />
                 tags?";
    var regex = new Regex(@"<br\s*/>");
    System.Console.WriteLine("Line breaks: {0}", regex.Matches(Str).Count);

希望这可以帮助。

Answer 2

//split the string
string[] splitted = Str.Replace("<br/>", "\n").Split('\n')
//output
int Count = splitted.Length

Answer 3

var count = Str.Split(new[] { "<br />" }, StringSplitOptions.None).Length - 1;

Answer 4

        int pos = -1;
        int count =0;
        do
        {
            pos = Str.IndexOf(@"<br />", ++pos);
            if (pos != -1)
                count++;

        } while (pos != -1);

        Console.WriteLine(count);  //2