Hello,
I am transporting some project to mono platform. I used Linq to do some
transaction with database.
But when encountered InsertOnSubmit() function, exception was coming as
follow:
Unhandled Exception: System.NullReferenceException: Object reference not
set to an instance of an object
I paste my code snape in the follow:
VideoFileDataContext pVideoFileDataContext = new
VideoFileDataContext();
using (TransactionScope scop = new TransactionScope()) {
foreach (FileInfo pFile in pAllFileList) {
// query if the file we wanna store in database if
still exist
VideoFileInfo pVideoFileInfo = new
VideoFileInfo();
pVideoFileInfo.FileName = pFile.Name;
pVideoFileInfo.FilePath = pFile.FullName;
pVideoFileInfo.FileSize = (int)(pFile.Length);
pVideoFileInfo.MD5Hash =
GetMd5FromFile(pFile.OpenRead());
pVideoFileInfo.FoundDate = pFile.LastAccessTime;
//every time we set status of file first we
found to Unknow
pVideoFileInfo.Status = "Unknow";
pVideoFileDataContext.VideoFile.InsertOnSubmit(pVideoFileInfo);
}
try
{
pVideoFileDataContext.SubmitChanges();
}
Bty: the code is fine when I run them on .net platform
Thanks
---
Shuping Teng
MSN: [email protected]
QQ: 77630245
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