我正在尝试使用vb 2010 Express连接到mysql，访问被拒绝

Question

i have already read a ton of posts about connecting vb 2010 express to Mysql in Wamp, but none solved my problem :P. The thing is that i have a local Mysql server running, to which i do connect with no problems in PHP and MySQL Workbench, but when i tried to connect with vb 2010 express i found out i had to Import the connector and then build the code accordingly.

I think my code is ok, but still getting the message "WindowsApplication1.vshost.exe Error: 0 : Access denied for user 'root'@'localhost' (using password: YES)"

Here's the code:

 Private Sub CheckPayments()

    Try
        myPassword = ""

        myConnstr = "Server=localhost;Database=kiosk;Uid=root;Pwd=myPassword"
        myQuery = "select * from products where deleted = 0"

        Dim myConn As New MySqlConnection(myConnstr)
        Dim myDa As New MySqlDataAdapter(myQuery, myConn)


        If myDa.Fill(myDs) Then ' 1 significa que a ligação foi efetuada com sucesso
            mysqldump.DataSource = myDs.Tables(0)
        End If

        myConn.Close()

    Catch ex As Exception
        MessageBox.Show(ex.Message)
    End Try

End Sub

Stuck in project with this error, need help quick !! Thanks in advance for any help you can give me :)

BR, Carlos Mendes

Answer 1

hope this helps out someone who needs to connect VB2010 Express to MySQL.

This code displays MySQL data in a DataGridView object. Connections problem solved :).

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)  Handles Button1.Click
    Dim con As MySqlConnection = New MySqlConnection("Data Source=localhost;Database=<your db>;User ID=<your user>;Password=<your password>;")
    Dim sql As MySqlCommand = New MySqlCommand("SELECT * FROM <your table>", con)

    Dim ds As DataSet = New DataSet()

    Dim DataAdapter1 As MySqlDataAdapter = New MySqlDataAdapter()

    con.Open()

    DataAdapter1.SelectCommand = sql

    DataAdapter1.Fill(ds, "<DataGridView table name>")

    DataGridView1.DataSource = ds

    DataGridView1.DataMember = "<DataGridView table name>"

    con.Close()
End Sub

Answer 2

You should Import Connecter, is better and good way with out any trouble!

mysql-connector-net-6.4.5-noinstall

Then go to Project -> Add Reference -> TAB-Browse

Browse where you save "mysql-connector-net-6.2.2"

Select only mysql.data.dll

Then use your Connection command to connect WAMP MYSQL! Thats It..