SQL FileStream Access to Stored Document

Question

I can upload store files, but can not retrieve files stored in SQL FileStream from a desktop PC. But I can retrieve the document from the IIS 7.0 server. The SQL server is on a different server.

Answer 1

I ran found out that SQL does opens and reads the SQL filestream stored document but returns Access Denied to IIS.  The program that retrieves the data is a class library that other programmers use in their program to publish the document.  I am
not sure if the problem is the my code or an active directory security issue.
Calls to retrieving the document as a byte array.  Then loads the byte array to a structured data array.
        private List<string> img = new List<string>() {"JPG", "GIF", "IMG", "BMP", "PIC"};      //define specific possible image type files
       /// <summary>
        /// This will retreive the blob as a Memory Stream 
        /// </summary>
        /// <param name="ID">Optional: ID Index reference of a specified Blob file. If ID is 0 the complete list is returned</param>
        /// <returns>Return type is Memory Stream</returns>
        private byte[] data;
        private blobTable rtnBlob;
        public blobTable get_Blob(int ID = 0)          // System.Drawing.Image get_Blob(int ID=0)
                    dbTble = "FileSto";
                    tblCol = "fStoID";
                    data = go_get_sqlStream(dRow);
                dbRow = dRow;
            dSet.Clear();
            dTable.Clear();
            IEnumerable<string> dType = from picImg in img
                                            where picImg == dbRow["docType"].ToString()
                                            select picImg;
            rtnBlob.DocByte = data;
            return rtnBlob;
        private byte[] byteStream=null;
        private byte[] go_get_sqlStream(DataRow refRow)
            object sqlPath;
            string sqlFileLoc = null;
            SqlTransaction sqlTrans;
            sqlcmd = new SqlCommand();
            sqlcn=GetConnected(sqlsvr);
            sqlcmd.Connection = sqlcn;
            sqlcn.Open();
            string sqltxt = "SELECT DocFile.PathName() FROM " + dbTble + " WHERE DocID = '" + refRow["StoID"] + "'";
            sqlcmd.CommandText = sqltxt;
            sqlPath = sqlcmd.ExecuteScalar();
            if (DBNull.Value != sqlPath)
                sqlFileLoc = (string)sqlPath;
            else
                throw new System.Exception("DocFile.PathName() failed");
            sqlTrans = sqlcn.BeginTransaction("mainTrans");
            sqlcmd.Transaction=sqlTrans;
            sqlcmd.CommandText="SELECT GET_FILESTREAM_TRANSACTION_CONTEXT()";
            sqlPath = sqlcmd.ExecuteScalar();
            byteStream = (byte[])sqlPath;
            sqlStream = new System.Data.SqlTypes.SqlFileStream(sqlFileLoc,byteStream, System.IO.FileAccess.ReadWrite);
            System.IO.StreamReader RSteam = new System.IO.StreamReader(sqlStream);
            string sqlData = RSteam.ReadToEnd();
            sqlStream.Seek(0, System.IO.SeekOrigin.Begin);
            byteBlob = new byte[sqlStream.Length - 1];
            sqlStream.Read(byteBlob, 0, byteBlob.Length);
            sqlStream.Close();
            sqlcmd.Transaction.Commit();
            sqlcn.Close();
            byteStream = byteBlob;
            sqlStream.Dispose();
            return byteStream;
Thanks,