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提供几个常用的C#字符串操作函数代码

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提供几个常用的C#字符串操作函数代码,包括:取文本左边,取文本右边,取文本中间,取文本中间到List集合,指定文本倒序等```csharp /// <summary> /// 取文本左边内容 /// </summary> /// <param name="str">文本</param> /// <param name="s">标识符</param> /// <returns>左边内容</returns> public static string GetLeft(string str, string s)

/// <summary> /// 取文本右边内容 /// </summary> /// <param name="str">文本</param> /// <param name="s">标识符</param> /// <returns>右边内容</returns> public static string GetRight(string str, string s)

/// <summary> /// 取文本中间内容 /// </summary> /// <param name="str">原文本</param> /// <param name="leftstr">左边文本</param> /// <param name="rightstr">右边文本</param> /// <returns>返回中间文本内容</returns> public static string Between(string str, string leftstr, string rightstr)

/// <summary> /// 取文本中间到List集合 /// </summary> /// <param name="str">文本字符串</param> /// <param name="leftstr">左边文本</param> /// <param name="rightstr">右边文本</param> /// <returns>List集合</returns> public List<string> BetweenArr(string str, string leftstr, string rightstr) { List<string> list = new List<string>(); int leftIndex = str.IndexOf(leftstr);//左文本起始位置 int leftlength = leftstr.Length;//左文本长度 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; }

/// <summary> /// 指定文本倒序 /// </summary> /// <param name="str">文本</param> /// <returns>倒序文本</returns> 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(); } ```

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