How to load blob of pdf in mysql to vb. Net

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VB

.NET

MySQL

PDF

client-server

i have a project that use pdf, client must can read the pdf in database server.. or can i upload just string (the directory of pdf) to database in computer server, then client just read the directory in the database, but how?

What I have tried:

Sub tampilpdf()
    connDB()
    Try
        AxAcroPDF1.src = Nothing
        sql = "SELECT pdf FROM tb_mastersoal where idsoal = '" & txtidsoal.Text & "' limit 1"
        Dim cmd As New MySqlCommand(sql, conn)
        dr = cmd.ExecuteReader
        While dr.Read()
            Dim utf As New System.Text.UTF7Encoding()
            AxAcroPDF1.src = utf.GetString(dr.Item("pdf"))
        End While
        dr.Close()
        cmd.Dispose()
    Catch ex As Exception
        MessageBox.Show("There was an error: " & ex.Message, "Error", _
         MessageBoxButtons.OK, MessageBoxIcon.Error)
    End Try
    conn.Close()
End Sub