public DataTable CheckPreviousGPX(int UserId, int SchoolId,
int ClassId, DataTable dtNew)
{
// Check if the same file is previously uploaded
// and if there are updated trackpoints in file
DataTable result = new DataTable();
DataTable dtPrv = objStudent.GetPreviousUploadedFile(UserId, UserRoleId);
if (dtPrv.Rows.Count > 0)
{
for (int i = 0; i < dtPrv.Rows.Count; i++)
{
string FilePath = ConfigurationManager.AppSettings["GPXWebPath"].ToString() + SchoolId.ToString() + "/" + ClassId.ToString() + "/" +
UserId.ToString() + "/" + dtPrv.Rows[i]["FileName"].ToString();
if (File.Exists(FilePath))
{
DataTable dtOld = new DataTable();
dtOld = LoadGPXWaypoints(FilePath);
if (dtOld.Rows.Count > 1 && dtNew.Rows.Count > 1)
{
int similarrows = MatchingFile(dtOld, dtNew);
if (similarrows > 0)
{
int oldRows = dtOld.Rows.Count;
int newRows = dtNew.Rows.Count;
if (newRows > oldRows)
{
for (int j = 0; j < (newRows - oldRows) - 1; j++)
{
dtNew.Rows[0].Delete();
}
result = dtNew;
}
break;
}
else
{
result = dtNew;
}
}
}
else
{
result = dtNew;
}
}
}
else
{
result = dtNew;
}
return(result);
}