private string findRepeat(string strfilenames)
{
string[] strfiles = Regex.Split(strfilenames, ",");
string keystr = "";
DataTable dt = new DataTable("StrList");
DataColumn dcCount = new DataColumn("count", System.Type.GetType("System.Int32"));
DataColumn dcKey = new DataColumn("keystr");
dt.Columns.Add(dcCount);
dt.Columns.Add(dcKey);
foreach (string file in strfiles)
{
keystr = file;
for (int i = 0; i <>
{
if (keystr.Length == 0) break;
Regex exp = new Regex(keystr + "+",RegexOptions.IgnoreCase);
Match mymatch = exp.Match(strfilenames);
MatchCollection mycoll = exp.Matches(strfilenames);
if (mycoll.Count > 1)
{
DataRow dr;
dr=dt.NewRow();
dr["count"] =(mycoll.Count + keystr.Length);
dr["keystr"] = keystr;
dt.Rows.Add(dr);
}
keystr = keystr.Substring(0, keystr.Length - 1);
}
}
DataRow[] drs = dt.Select("count > 1", "count DESC");
if (drs.Length>1)
{
return drs[0]["keystr"].ToString();
}
return "";
}
