是谁说的jdk/jre/bin里面有javac.exe的[JDK配置]

public static string GetSubString(string title, int length)
{
int totalLength = 0;
int currentIndex = 0;
while (totalLength < length && currentIndex < title.Length)
{
if (title[currentIndex] < 0 || title[currentIndex] > 255)
totalLength += 2;
else
totalLength++;

currentIndex++;
}

if (currentIndex < title.Length)
return title.Substring(0, currentIndex) + "...";
else
return title.ToString();
}