使用String.Split Method (String[], StringSplitOptions)
注意
This method is new in the .NET Framework version 2.0.
示例代码：
// This example demonstrates the String() methods that use
// the StringSplitOptions enumeration.
using System;
class Sample
{
public static void Main()
{
string s1 = ",ONE,,TWO,,,THREE,,";
string s2 = "[stop]" +
"ONE[stop][stop]" +
"TWO[stop][stop][stop]" +
"THREE[stop][stop]";
char[] charSeparators = new char[] {','};
string[] stringSeparators = new string[] {"[stop]"};
string[] result;
// ------------------------------------------------------------------------------
// Split a string delimited by characters.
// ------------------------------------------------------------------------------
Console.WriteLine("1) Split a string delimited by characters:\n");
// Display the original string and delimiter characters.
Console.WriteLine("1a )The original string is \"{0}\".", s1);
Console.WriteLine("The delimiter character is '{0}'.\n",
charSeparators[0]);
// Split a string delimited by characters and return all elements.
Console.WriteLine("1b) Split a string delimited by characters and " +
"return all elements:");
result = s1.Split(charSeparators, StringSplitOptions.None);
Show(result);
// Split a string delimited by characters and return all non-empty elements.
Console.WriteLine("1c) Split a string delimited by characters and " +
"return all non-empty elements:");
result = s1.Split(charSeparators, StringSplitOptions.RemoveEmptyEntries);
Show(result);
// Split the original string into the string and empty string before the
// delimiter and the remainder of the original string after the delimiter.
Console.WriteLine("1d) Split a string delimited by characters and " +
"return 2 elements:");
result = s1.Split(charSeparators, 2, StringSplitOptions.None);
Show(result);
// Split the original string into the string after the delimiter and the
// remainder of the original string after the delimiter.
Console.WriteLine("1e) Split a string delimited by characters and " +
"return 2 non-empty elements:");
result = s1.Split(charSeparators, 2, StringSplitOptions.RemoveEmptyEntries);
Show(result);
// ------------------------------------------------------------------------------
// Split a string delimited by another string.
// ------------------------------------------------------------------------------
Console.WriteLine("2) Split a string delimited by another string:\n");
// Display the original string and delimiter string.
Console.WriteLine("2a) The original string is \"{0}\".", s2);
Console.WriteLine("The delimiter string is \"{0}\".\n", stringSeparators[0]);
// Split a string delimited by another string and return all elements.
Console.WriteLine("2b) Split a string delimited by another string and " +
"return all elements:");
result = s2.Split(stringSeparators, StringSplitOptions.None);
Show(result);
// Split the original string at the delimiter and return all non-empty elements.
Console.WriteLine("2c) Split a string delimited by another string and " +
"return all non-empty elements:");
result = s2.Split(stringSeparators, StringSplitOptions.RemoveEmptyEntries);
Show(result);
// Split the original string into the empty string before the
// delimiter and the remainder of the original string after the delimiter.
Console.WriteLine("2d) Split a string delimited by another string and " +
"return 2 elements:");
result = s2.Split(stringSeparators, 2, StringSplitOptions.None);
Show(result);
// Split the original string into the string after the delimiter and the
// remainder of the original string after the delimiter.
Console.WriteLine("2e) Split a string delimited by another string and " +
"return 2 non-empty elements:");
result = s2.Split(stringSeparators, 2, StringSplitOptions.RemoveEmptyEntries);
Show(result);
}
// Display the array of separated strings.
public static void Show(string[] entries)
{
Console.WriteLine("The return value contains these {0} elements:", entries.Length);
foreach (string entry in entries)
{
Console.Write("<{0}>", entry);
}
Console.Write("\n\n");
}
}
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