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Thursday, October 4, 2007

Saving Images into database

FieldName Type
Pic OLE Object
FileSize Text

The following code establishes a database connection and inserts a file in the "Pic" field.

Save the file as SaveImage.vb

Imports System
Imports System.IO
Imports System.Data

Public Class SaveImage
Shared Sub main()
'Delaclare a file stream object
Dim o As System.IO.FileStream
'Declare a stream reader object
Dim r As StreamReader
Dim jpgFile As String
Console.Write("Enter a Valid .JPG file path")
jpgFile = Console.ReadLine
If Dir(jpgFile) = "" Then
Console.Write("Invalid File Path")
Exit Sub
End If
'Open the file
o = New FileStream(jpgFile, FileMode.Open, FileAccess.Read, FileShare.Read)
'Read the output in a stream reader
r = New StreamReader(o)
'Declare an Byte array to save the content of the file to be saved
Dim FileByteArray(o.Length - 1) As Byte
o.Read(FileByteArray, 0, o.Length)
'Open the DataBase Connection, Please map the datasource name to match the 'Database path
Dim Con As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.3.51;Persist Security Info=False;Data Source=DbImages.mdb")
Dim Sql As String = "INSERT INTO DbImages (Pic,FileSize) VALUES (?,?)"
'Declare a OleDbCommand Object
Dim CmdObj As New System.Data.OleDb.OleDbCommand(Sql, Con)
'Add the parameters
CmdObj.Parameters.Add("@Pic", System.Data.OleDb.OleDbType.Binary, o.Length).Value = FileByteArray
CmdObj.Parameters.Add("@FileSize", System.Data.OleDb.OleDbType.VarChar, 100).Value = o.Length
Catch ex As Exception
End Try
End Sub
End Class

Compile the file as
vbc SaveImage.vb / /r:system.dll
A file will be inserted in the Database each time we execute SaveImage.exe.

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