Hello, i find your article very helpful to like me who is starting to do the programming.
I am stuck right now with connecting to database at the frmMain – its prompting access denied PASSWORD: No.
I did remove my password in mysql in attempting to connect but still not working.
Appreciate your help on this.
Many thanks.

Hi further to my above query. I find it better to send you my codes:

Imports MySql.Data.MySqlClient
Imports System.Data

Public Class FrmMain
Private myConnString As String
Private myUserID As Integer

Public WriteOnly Property connectionString() As String
Set(ByVal value As String)
myConnString = value
End Set
End Property
Private Sub cmdRefresh_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdRefresh.Click
Dim conn As New MySqlConnection
Dim myCommand As New MySqlCommand
Dim myAdapter As New MySqlDataAdapter
Dim myData As New DataTable
Dim SQL As String

SQL = “SELECT CONCAT(u.lastname, ‘, ‘, u.firstname) AS Name, s.message AS Message, ” _
& “DATE_FORMAT(e.timestamp,’%b %d %Y – %r’) AS DateTime, e.status AS Status ” _
& “FROM event e LEFT JOIN status s ON e.message_id = s.message_id, user u ” _
& “WHERE(e.user_id = u.user_id) ” _
& “AND event_id IN( ” _
& “SELECT MAX(e.event_id) ” _
& “FROM event e ” _
& “GROUP BY e.user_id) ” _
& “ORDER BY name”

conn.ConnectionString = myConnString

Try
conn.Open()

Try
myCommand.Connection = conn
myCommand.CommandText = SQL

myAdapter.SelectCommand = myCommand
myAdapter.Fill(myData)

dgvStatus.DataSource = myData
dgvStatus.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells

Catch myerror As MySqlException
MsgBox(“There was an error reading from the database: ” & myerror.Message)

End Try

Catch myerror As MySqlException
MessageBox.Show(“Error Connecting to Database: ” & myerror.Message)
Finally
If conn.State ConnectionState.Closed Then conn.Close()
End Try

End Sub
End Class

I’m just going through your very very good tutorial, but unfortunately I’m stuck when it comes to the point “Creating a Status Form”.

I do the same you do in your tutorial, but I get a NullReference-Exception telling me that the link to the object wasn’t appointed to an object instance (I don’t know if these are the correct terms as this is a translation from German into English)).

{“Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.”}

Did I miss anything here??

Hope you can help!

Thanks, Steffi

Im a newbie of visual basic programing. after read this, Your tutorial is really useful for me and very briliant. But i have a problem to delete the rows on the datagrid.
in my project i add the delete button at my form from the example that u gave on this tutorial. so when i click the delete button after choose a row on the datagrid, it will be deleted.
hows the code to choose the row and delete it.

thankyou

Thanks to the creators…