Private Sub retrieve_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles retrieve.Click
Dim conn As New OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=n:\rino\Databaseimage.accdb;Persist Security Info=False;")
conn.Open()
Dim str As String = "select * from Images where imageName = '1'"
Dim cmd As New OleDb.OleDbCommand(str, conn)
Dim adapter As New System.Data.OleDb.OleDbDataAdapter(cmd)
Dim dt As New DataTable
Try
adapter.Fill(dt)
Catch ex As OleDb.OleDbException
MessageBox.Show(ex.Message, "OleDbException")
Exit Sub
Catch ex As Exception
MessageBox.Show(ex.Message, "GeneralException")
Exit Sub
End Try
conn.Close()
'Byte [] per l'immagine
If dt.Rows.Count > 0 Then
Dim bArray As Byte() = CType(dt.Rows(0).Item("image"), Byte())
If bArray.Length > 0 Then
Dim stream As IO.MemoryStream = New IO.MemoryStream(bArray)
PictureBox1.Image = Image.FromStream(stream)
stream.Close()
End If
End If
End Sub
Function oleDBCmd() As Object
Throw New NotImplementedException
End Function
Private Function connectString() As String
Throw New NotImplementedException
End Function
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
End Sub
'Tu sai che questo è solo il codice di esempio che ti ha detto come fare questo, si sono sicuramente non poteva farlo funzionare solo se si copia e incolla.
'
'sta utilizzando OLEDB? Prova per favore:'
Private Sub AddImage_Click1(sender As Object, e As System.EventArgs) Handles AddImage.Click
'Image to byte[]
Dim myImage As Image = Image.FromFile("n:\rino\foto\no.jpg")
Dim imgMemoryStream As IO.MemoryStream = New IO.MemoryStream()
myImage.Save(imgMemoryStream, System.Drawing.Imaging.ImageFormat.Jpeg)
Dim imgByteData As Byte() = imgMemoryStream.GetBuffer()
'Inserire l'immagine nel database
Dim conn As New OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=n:\rino\Databaseimage.accdb;Persist Security Info=False;")
conn.Open()
Dim str As String = "insert into Images ([imageName] ,[image]) values (1,@myimage)"
Dim cmd As New OleDb.OleDbCommand(str, conn)
cmd.Parameters.Add("@myimage", OleDb.OleDbType.Binary).Value = imgByteData
Try
cmd.ExecuteNonQuery()
Catch ex As OleDb.OleDbException
MessageBox.Show(ex.Message, "OleDbException")
'MessageBox.Show(ex.InnerException.Message)
Exit Sub
Catch ex As Exception
MessageBox.Show(ex.Message, "GeneralException")
Exit Sub
End Try
conn.Close()
End Sub
End Class
