static void UseStringInfo()
{
string s = new string(new char[] { '\u0041', '\u030A', '\u0625', '\u0650' }); //a combined string
s = s.Insert(2, "+");
System.Globalization.StringInfo info = new System.Globalization.StringInfo(s);
Console.WriteLine(s.Length + " | " + info.LengthInTextElements);
System.Globalization.TextElementEnumerator enumerator = System.Globalization.StringInfo.GetTextElementEnumerator(s);
//enumerator开始是在null位置, 需要先movenext
string output = "Traverse string by Text Element: " + System.Environment.NewLine;
while (enumerator.MoveNext() == true)
{
output += enumerator.GetTextElement() + System.Environment.NewLine;
}
output += "Traverse string by Character" + System.Environment.NewLine;
List <char> cl = new List <char>();
foreach (char c in s)
{
output += c + System.Environment.NewLine;
}
output += "Whole string is represented as" + System.Environment.NewLine;
output += s;
MessageBox.Show(output);
}
// Use Rune instead of this once we're able to be on .NET Core 3.1 and above
public static List <string> TextElements(this string input)
{
System.Globalization.TextElementEnumerator enumerator = System.Globalization.StringInfo.GetTextElementEnumerator(input);
List <string> list = new List <string>();
while (enumerator.MoveNext())
{
list.Add(enumerator.GetTextElement());
}
return(list);
}
public static List <string> SplitEmojiString(string inputText)
{
List <string> outList = new List <string>();
System.Globalization.TextElementEnumerator enumerator = System.Globalization.StringInfo.GetTextElementEnumerator(inputText);
while (enumerator.MoveNext())
{
outList.Add(enumerator.GetTextElement());
}
return(outList);
}
static void Main()
{
// Create a file that contains the Greek work ψυχή (psyche) when interpreted by using
// code page 737 ((DOS) Greek). You can also create the file by using Character Map
// to paste the characters into Microsoft Word and then "Save As" by using the DOS
// (Greek) encoding. (Word will actually create a six-byte file by appending "\r\n" at the end.)
System.IO.File.WriteAllBytes(@"greek.txt", new byte[] { 0xAF, 0xAC, 0xAE, 0x9E });
// Specify the code page to correctly interpret byte values
Encoding encoding = Encoding.GetEncoding(737); //(DOS) Greek code page
byte[] codePageValues = System.IO.File.ReadAllBytes(@"greek.txt");
// Same content is now encoded as UTF-16
string unicodeValues = encoding.GetString(codePageValues);
// Show that the text content is still intact in Unicode string
// (Add a reference to System.Windows.Forms.dll)
System.Windows.Forms.MessageBox.Show(unicodeValues);
// Same content "ψυχή" is stored as UTF-8
System.IO.File.WriteAllText(@"greek_unicode.txt", unicodeValues);
// Conversion is complete. Show the bytes to prove the conversion.
Console.WriteLine("8-bit encoding byte values:");
foreach (byte b in codePageValues)
{
Console.Write("{0:X}-", b);
}
Console.WriteLine();
Console.WriteLine("Unicode values:");
string unicodeString = System.IO.File.ReadAllText("greek_unicode.txt");
System.Globalization.TextElementEnumerator enumerator =
System.Globalization.StringInfo.GetTextElementEnumerator(unicodeString);
while (enumerator.MoveNext())
{
string s = enumerator.GetTextElement();
int i = Char.ConvertToUtf32(s, 0);
Console.Write("{0:X}-", i);
}
Console.WriteLine();
// Keep the console window open in debug mode.
Console.Write("Press any key to exit.");
Console.ReadKey();
}