private void ShowTorrentInformation()
{
try
{
BEncodedValue value;
BEncodedString str;
bool b;
txtInfo.Clear();
txtInfo.AppendText("种子文件: " + currentTorrentFilename + Environment.NewLine);
b = torrent.TryGetValue("created by", out value);
if (b)
{
str = value as BEncodedString;
if (str != null)
{
txtInfo.AppendText("创建程序: " + str.ToString() + Environment.NewLine);
}
}
b = torrent.TryGetValue("creation date", out value);
if (b)
{
str = value as BEncodedString;
if (str != null)
{
string creationDateString = str.ToString();
try
{
long longDate;
longDate = Convert.ToInt64(creationDateString);
DateTime creationDate = DateTime.FromBinary(longDate);
txtInfo.AppendText("创建日期: " + creationDate.ToString() + Environment.NewLine);
}
catch (Exception)
{
txtInfo.AppendText("创建日期: (无效)" + Environment.NewLine);
}
}
}
b = torrent.TryGetValue("encoding", out value);
if (b)
{
str = value as BEncodedString;
if (str != null)
{
txtInfo.AppendText("编码: " + str.ToString() + Environment.NewLine);
}
}
// 如果不存在，那肯定不是种子文件
value = torrent["info"];
BEncodedDictionary dict = (BEncodedDictionary)value;
BEncodedString torrentName = (BEncodedString)dict["name"];
txtInfo.AppendText("种子名称: " + torrentName.ToString() + Environment.NewLine);
BEncodedNumber pieceLength = (BEncodedNumber)dict["piece length"];
txtInfo.AppendText("分块大小: ");
string postfix;
double val = 0;
var num = pieceLength.Number;
if (num < 1024)
{
postfix = " B";
val = num;
}
else if (num < 1024 * 1024)
{
postfix = " KB";
val = num / (double)1024;
}
else if (num < 1024 * 1024 * 1024)
{
postfix = " MB";
val = num / (double)(1024 * 1024);
}
else
{
postfix = " GB";
val = num / (double)(1024 * 1024 * 1024);
}
val = Math.Round(val, 2);
txtInfo.AppendText(val.ToString() + postfix + Environment.NewLine);
BEncodedString pieces = (BEncodedString)dict["pieces"];
txtInfo.AppendText("分块数量: " + (pieces.TextBytes.Length / 20).ToString() + Environment.NewLine);
}
catch (Exception)
{
isHandlingTorrent = false;
txtInfo.AppendText("解析种子时出现错误。");
}
}