public void Truncate(int lines) {
string truncatedStack = "";
while (lines-- > 0 && startIndex < length) {
if (truncatedStack == null) {
truncatedStack = GetLine();
}
else {
truncatedStack += ": " + GetLine();
}
truncatedStack += Environment.NewLine;
}
releventStack = truncatedStack;
startIndex = 0;
endIndex = 0;
length = releventStack.Length;
}
}