windows form application with online database

i have created an small application which edit image, i want to store it and retrieve from database, i have an online database, every thing is working fine but uploading and retrieval of image is too slow , how can i make it work fast.
connection code

Try


          Dim gszStr As String


          gszStr = "Data Source =server ip;database=dbName ;UID=@# ;Password=$#$#$"
          Con.ConnectionString = gszStr
          Con.Open()
      Catch ex As Exception
          MsgBox("Not Connected To Internet", MsgBoxStyle.Information)

      End Try

  End Sub

Retrieval Code

Try


           Dim ct1 As New SqlClient.SqlCommandBuilder
           Dim tmpds As New DataSet
           Dim tmpda As New SqlDataAdapter

           tmpda.SelectCommand = New SqlCommand(sql, Con)
           tmpda.Fill(tmpds)

           If tmpds.Tables(0).Rows.Count <> 0 Then


               PF_ShowImage(tmpds.Tables(0).Rows(0).Item(2))

           End If
       Catch ex As Exception
           MsgBox("Server Not Responding", MsgBoxStyle.Critical)

       End Try

Upload code

Dim Sqlstr As String
      Dim daH As New SqlDataAdapter

      Dim data() As Byte = PF_SaveImage()

      PictureBox1.Image.Save("C:\NewFileName.jpg", System.Drawing.Imaging.ImageFormat.Jpeg)

      Sqlstr = ("Insert into TestImage Values(@Img)")              ''
      daH.InsertCommand = New SqlCommand(Sqlstr, Con)
      daH.InsertCommand.Parameters.Add(New SqlParameter("@Img", SqlDbType.Image)).Value = data

      daH.InsertCommand.ExecuteNonQuery()

      '******************Give save successfull message ***********************
      MsgBox("Values Saved Successfully", MsgBoxStyle.Information)

code is working fine but how to speed up things ?

Tags: Visual Basic, Windows Forms