Permission Problem writing to Disk in Asp.NET application

[Lars Netzel]

Here's what I need to do:
Due to a bug in Crystal Reports ExportToStream() method I can't stream a
Crystal Reports directly to the client as PDF and I must must use the
Export() and put the the PDF on disk first and stream to the client. That's
just how it is.

Question:
So I need to let the aspx user have write permissions to disk.. NOT GOOD.
How do I solve this? Can I somehow write the PDF to disk in another thread
with other writes? OR are ther other ways around this?

best regards
/Lars Netzel

 

[Kamal Vaghjiani]

Lars

Note : The code below is stripped from a asp.net project using a web
service. This project would relay a binary file from an internal web server
where Crystal reports is installed to an external web server. You will still
need write permissions for the directory you want to save to

You could try this, I hope It helps

Stream fs =
rep.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
byte[] binaryfile = StreamToBinary(fs);
string docLocation = Server.MapPath(null) + @"\Docs\";
SaveFileToServer(binaryfile,docLocation,"my.pdf",DateTime.Now);
Response.Redirect("Docs/"+"my.pdf");

public void SaveFileToServer(byte[] binaryFile, string docPath, string
docName, DateTime fileModifiedDate)
{
Directory.CreateDirectory(docPath);
MemoryStream m = new MemoryStream(binaryFile);
FileStream f = new FileStream(docPath+docName,FileMode.Create);
m.WriteTo(f);
f.Close();
m.Close();
File.SetLastWriteTime(docPath+docName,fileModifiedDate);
}

public byte[] StreamToBinary(Stream fs)
{
Int32 i = Convert.ToInt32(fs.Length);
byte[] b = new byte[fs.Length];
fs.Read(b,0,i);
fs.Close();
}

 

[Lars Netzel]

Thanks but I can't ExportToStream due to a bug with record and
groupselections in the Crystal Reports Engine. so I can't use that code.

I need to write to disk with other permisisons than the ASPNET user

/Lars

Lars

Note : The code below is stripped from a asp.net project using a web
service. This project would relay a binary file from an internal web
server where Crystal reports is installed to an external web server. You
will still need write permissions for the directory you want to save to

You could try this, I hope It helps

Stream fs =
rep.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
byte[] binaryfile = StreamToBinary(fs);
string docLocation = Server.MapPath(null) + @"\Docs\";
SaveFileToServer(binaryfile,docLocation,"my.pdf",DateTime.Now);
Response.Redirect("Docs/"+"my.pdf");

public void SaveFileToServer(byte[] binaryFile, string docPath, string
docName, DateTime fileModifiedDate)
{
Directory.CreateDirectory(docPath);
MemoryStream m = new MemoryStream(binaryFile);
FileStream f = new FileStream(docPath+docName,FileMode.Create);
m.WriteTo(f);
f.Close();
m.Close();
File.SetLastWriteTime(docPath+docName,fileModifiedDate);
}

public byte[] StreamToBinary(Stream fs)
{
Int32 i = Convert.ToInt32(fs.Length);
byte[] b = new byte[fs.Length];
fs.Read(b,0,i);
fs.Close();
}

Here's what I need to do:
Due to a bug in Crystal Reports ExportToStream() method I can't stream a
Crystal Reports directly to the client as PDF and I must must use the
Export() and put the the PDF on disk first and stream to the client.
That's just how it is.

Question:
So I need to let the aspx user have write permissions to disk.. NOT GOOD.
How do I solve this? Can I somehow write the PDF to disk in another
thread with other writes? OR are ther other ways around this?

best regards
/Lars Netzel