internal StackTrace(Exception e, int skipFrames, bool fNeedFileInfo, bool returnNativeFrames)
{
if (e == null)
{
throw new ArgumentNullException("e");
}
if (skipFrames < 0)
{
throw new ArgumentOutOfRangeException("< 0", "skipFrames");
}
this.frames = StackTrace.get_trace(e, skipFrames, fNeedFileInfo);
if (!returnNativeFrames)
{
bool flag = false;
for (int i = 0; i < this.frames.Length; i++)
{
if (this.frames[i].GetMethod() == null)
{
flag = true;
}
}
if (flag)
{
ArrayList arrayList = new ArrayList();
for (int j = 0; j < this.frames.Length; j++)
{
if (this.frames[j].GetMethod() != null)
{
arrayList.Add(this.frames[j]);
}
}
this.frames = (StackFrame[])arrayList.ToArray(typeof(StackFrame));
}
}
}