在C#里模拟LotusScript里的字符串截取函数代码,CSharp代码库,德仔网

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【CSharp】在C#里模拟LotusScript里的字符串截取函数

作者:starrow / 发布于2014/6/5/ 695

LotusScript里的字符串处理函数在截取子字符串方面很方便好用


	//Mimic LotusScript string functions
	 public class StringUtility
	 {
	 #region Left function
	 //参数source为源字符串，value为要查找的子字符串，include指示返回的结果是否包含要查找的子字符串。以下几个方法的参数含义类似。
	 public static string Left(string source,string value,bool include)
	 {
	 int pos = source.IndexOf(value);
	 if (pos > -1)
	 {
	 if (include)
	 {
	 return source.Substring(0, pos + value.Length);
	 }
	 else
	 {
	 return source.Substring(0, pos);
	 }
	 }
	 else
	 {
	 return "";
	 }
	 }

	 //上面方法的重载，只接受两个字符串参数，返回的结果不包括要查找的子字符串。
	 public static string Left(string source, string value)
	 {
	 return Left(source, value, false);
	 }

	 //将第一个Left方法的第二个字符串参数重载为字符类型。
	 public static string Left(string source, char value,bool include)
	 {
	 return Left(source, Convert.ToString(value), include);
	 }

	 public static string Left(string source, char value)
	 {
	 return Left(source, value, false);
	 }

	 #endregion

	 #region Right() function

	 public static string Right(string source, string value, bool include)
	 {
	 int pos = source.IndexOf(value);
	 if (pos > -1)
	 {
	 if (include)
	 {
	 return source.Substring(pos);
	 }
	 else
	 {
	 return source.Substring(pos + value.Length);
	 }
	 }
	 else
	 {
	 return "";
	 }
	 }

	 public static string Right(string source, string value)
	 {
	 return Right(source, value, false);
	 }

	 public static string Right(string source, char value, bool include)
	 {
	 return Right(source, Convert.ToString(value), include);
	 }

	 public static string Right(string source, char value)
	 {
	 return Right(source, value, false );
	 }

	 #endregion

	 #region LeftBack() function

	 public static string LeftBack(string source, string value, bool include)
	 {
	 int pos = source.LastIndexOf(value);
	 if (pos > -1)
	 {
	 if (include)
	 {
	 return source.Substring(0, pos + value.Length);
	 }
	 else
	 {
	 return source.Substring(0, pos);
	 }
	 }
	 else
	 {
	 return "";
	 }
	 }

	 public static string LeftBack(string source, string value)
	 {
	 return LeftBack(source, value, false);
	 }

	 public static string LeftBack(string source, char value, bool include)
	 {
	 return LeftBack(source, Convert.ToString(value), false);
	 }

	 public static string LeftBack(string source, char value)
	 {
	 return LeftBack(source, value, false );
	 }

	 #endregion

	 #region RightBack() function

	 public static string RightBack(string source, string value, bool include)
	 {
	 int pos = source.LastIndexOf(value);
	 if (pos > -1)
	 {
	 if (include)
	 {
	 return source.Substring(pos);
	 }
	 else
	 {
	 return source.Substring(pos + value.Length);
	 }
	 }
	 else
	 {
	 return "";
	 }
	 }

	 public static string RightBack(string source, string value)
	 {
	 return RightBack(source, value, false);
	 }

	 public static string RightBack(string source, char value, bool include)
	 {
	 return RightBack(source, Convert.ToString(value), include);
	 }

	 public static string RightBack(string source, char value)
	 {
	 return RightBack(source, value, false );
	 }

	 #endregion
	 }

试试其它关键字

　LotusScript　

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.在C#里模拟LotusScript里的字符串截取函数