提供几个常用的C#字符串操作函数源码

将做工程过程比较好的内容做个记录，下边代码段是关于提供几个常用的C#字符串操作函数的代码。

public static string GetLeft(string str, string s)

{

    string temp = str.Substring(0, str.IndexOf(s));

    return temp;

}

public static string GetRight(string str, string s)

{

    string temp = str.Substring(str.IndexOf(s), str.Length-str.Substring(0, str.IndexOf(s)).Length);

    return temp;

}

public static string Between(string str, string leftstr, string rightstr)

{

    int i = str.IndexOf(leftstr) + leftstr.Length;

    string temp = str.Substring(i, str.IndexOf(rightstr, i) - i);

    return temp;

}

public List<string> BetweenArr(string str, string leftstr, string rightstr)

{

    List<string> list = new List<string>();

    int rightIndex = 0;

    string temp = "";

    while (leftIndex != -1)

    {

        rightIndex = str.IndexOf(rightstr, leftIndex + leftlength);

        if (rightIndex == -1)

        {

            break;

        }

        temp = str.Substring(leftIndex + leftlength, rightIndex - leftIndex - leftlength);

        list.Add(temp);

        leftIndex = str.IndexOf(leftstr, rightIndex + 1);

    }

    return list;

}

public static string StrReverse(string str)

{

    char[] chars = str.ToCharArray();

    StringBuilder sb = new StringBuilder();

    for (int i = 0; i < chars.Length; i++)

    {

        sb.Append(chars[chars.Length - 1 - i]);

    }

    return sb.ToString();

}