CODEWITHSUNDEEP
vb.netbackgroundworker
E_Blue
E_Blue

Reputation: 1151

How to cancel a non iterative BackGroundWorker

I have a non iterative code inside a BackGroundWorker, so I can´t check if CancellationPendig.

The code is the following.

Private Sub BgW1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BgW1.DoWork
        Try
            Dim conn As New MySqlConnection(My.Settings.MySQL_Cnn_Cfg)
            Dim Adp As New MySqlDataAdapter
            Dim TablaDatos As New DataTable

            conn.Open()

            Using cmd As New MySqlCommand()
                cmd.CommandType = CommandType.Text
                cmd.Connection = conn

                cmd.CommandText = e.Argument

                Adp.SelectCommand = cmd

                TablaDatos.Clear()
                Adp.Fill(TablaDatos)

                e.Result = TablaDatos
            End Using
        Catch ex As Exception
            e.Result = "Error!"
            e.Cancel = True
        End Try
End Sub

The BackGroundWorker receives a query string and return a DataTable and it works if the remote server make a fast answer, but with complex querys that take some time I cant' cancel the process, or at least I don't know how.

I already try 

BgW1.Dispose()

With no success, so There's another way to stop a BackGroundWorker?

Upvotes: 3

Views: 252

Answers (1)

Mad Dog Tannen
Mad Dog Tannen

Reputation: 7242

No you cannot.

The only way I can see this working is if you have the ID of the MySQL connection, and another button that when you click it kills that process, in that sense the query would stop and the backgrounworker would finish.

Upvotes: 4

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