C#相关问题

[罚酒饮得]

为什么加了StringSplitOptions.RemoveEmptyEntries就不会出现错误提示？

[无情时尚]

学会看API，API说得很清楚

        //
        // 摘要:
        //     Returns a string array that contains the substrings in this instance that are
        //     delimited by elements of a specified Unicode character array.
        //
        // 参数:
        //   separator:
        //     An array of Unicode characters that delimit the substrings in this instance,
        //     an empty array that contains no delimiters, or null.
        //
        // 返回结果:
        //     An array whose elements contain the substrings in this instance that are delimited
        //     by one or more characters in separator. For more information, see the Remarks
        //     section.
        public String[] Split(params char[] separator);
        //
        // 摘要:
        //     Returns a string array that contains the substrings in this string that are delimited
        //     by elements of a specified Unicode character array. A parameter specifies whether
        //     to return empty array elements.
        //
        // 参数:
        //   separator:
        //     An array of Unicode characters that delimit the substrings in this string, an
        //     empty array that contains no delimiters, or null.
        //
        //   options:
        //     System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements from
        //     the array returned; or System.StringSplitOptions.None to include empty array
        //     elements in the array returned.
        //
        // 返回结果:
        //     An array whose elements contain the substrings in this string that are delimited
        //     by one or more characters in separator. For more information, see the Remarks
        //     section.
        //
        // 异常:
        //   T:System.ArgumentException:
        //     options is not one of the System.StringSplitOptions values.
        [ComVisible(false)]
        public String[] Split(char[] separator, StringSplitOptions options);
        //
        // 摘要:
        //     Returns a string array that contains the substrings in this string that are delimited
        //     by elements of a specified string array. A parameter specifies whether to return
        //     empty array elements.
        //
        // 参数:
        //   separator:
        //     A string array that delimits the substrings in this string, an empty array that
        //     contains no delimiters, or null.
        //
        //   options:
        //     System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements from
        //     the array returned; or System.StringSplitOptions.None to include empty array
        //     elements in the array returned.
        //
        // 返回结果:
        //     An array whose elements contain the substrings in this string that are delimited
        //     by one or more strings in separator. For more information, see the Remarks section.
        //
        // 异常:
        //   T:System.ArgumentException:
        //     options is not one of the System.StringSplitOptions values.
        [ComVisible(false)]
        public String[] Split(String[] separator, StringSplitOptions options);
        //
        // 摘要:
        //     Returns a string array that contains the substrings in this instance that are
        //     delimited by elements of a specified Unicode character array. A parameter specifies
        //     the maximum number of substrings to return.
        //
        // 参数:
        //   separator:
        //     An array of Unicode characters that delimit the substrings in this instance,
        //     an empty array that contains no delimiters, or null.
        //
        //   count:
        //     The maximum number of substrings to return.
        //
        // 返回结果:
        //     An array whose elements contain the substrings in this instance that are delimited
        //     by one or more characters in separator. For more information, see the Remarks
        //     section.
        //
        // 异常:
        //   T:System.ArgumentOutOfRangeException:
        //     count is negative.
        public String[] Split(char[] separator, int count);
        //
        // 摘要:
        //     Returns a string array that contains the substrings in this string that are delimited
        //     by elements of a specified Unicode character array. Parameters specify the maximum
        //     number of substrings to return and whether to return empty array elements.
        //
        // 参数:
        //   separator:
        //     An array of Unicode characters that delimit the substrings in this string, an
        //     empty array that contains no delimiters, or null.
        //
        //   count:
        //     The maximum number of substrings to return.
        //
        //   options:
        //     System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements from
        //     the array returned; or System.StringSplitOptions.None to include empty array
        //     elements in the array returned.
        //
        // 返回结果:
        //     An array whose elements contain the substrings in this string that are delimited
        //     by one or more characters in separator. For more information, see the Remarks
        //     section.
        //
        // 异常:
        //   T:System.ArgumentOutOfRangeException:
        //     count is negative.
        //
        //   T:System.ArgumentException:
        //     options is not one of the System.StringSplitOptions values.
        [ComVisible(false)]
        public String[] Split(char[] separator, int count, StringSplitOptions options);
        //
        // 摘要:
        //     Returns a string array that contains the substrings in this string that are delimited
        //     by elements of a specified string array. Parameters specify the maximum number
        //     of substrings to return and whether to return empty array elements.
        //
        // 参数:
        //   separator:
        //     A string array that delimits the substrings in this string, an empty array that
        //     contains no delimiters, or null.
        //
        //   count:
        //     The maximum number of substrings to return.
        //
        //   options:
        //     System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements from
        //     the array returned; or System.StringSplitOptions.None to include empty array
        //     elements in the array returned.
        //
        // 返回结果:
        //     An array whose elements contain the substrings in this string that are delimited
        //     by one or more strings in separator. For more information, see the Remarks section.
        //
        // 异常:
        //   T:System.ArgumentOutOfRangeException:
        //     count is negative.
        //
        //   T:System.ArgumentException:
        //     options is not one of the System.StringSplitOptions values.
        [ComVisible(false)]
        public String[] Split(String[] separator, int count, StringSplitOptions options);