使用Asp.Net计算字符串中的特定字符 [英] counting specific character in a string using Asp.Net

问题描述

在特定单词中，计算一个特定字符.
例如:在下载中计算"O"字.
结果计数:2

In Particular word, count a particular Character.
For Example : Count ''O'' word in Download.
Result Count : 2

推荐答案

:

myString.Count(ch => ch == 'C');

取决于您的喜好:

Depends on what you like:

// given the following, and assuming you don't care about case-sensitivity:
string myString = "Download";
char myChar = 'o';
int count = 0;

// if case-sensitivity matters, comment these two lines
myChar = myChar.ToLower();
myString = myString.ToLower()

// do this:
foreach (char c in myString)
{
    count += (c = myChar) ? 1 : 0;
}

// or this:
count = myString.Count(ch => ch == myChar);

// or this:
int count = (from c in myString
             where c == myChar
             select c).Count();

Dim s As String = "How are you doing?"
Dim Count As Integer = (From c As Char In s.ToCharArray Where c.Equals("o"c) Select c).Count

是使用LinQ的一种方法

Is one method using LinQ

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