Error updating MySQL Table from DataGridView in VB.NET

I try to update a table of my database in MySQL from a DataGridView in my VB.NET project but I get the following error:

concurrency violation the updatecommand affected 0 of the expected 1 records.

The code I have is the following:

Private Sub btnUpdateServices_Click(sender As Object, e As EventArgs) Handles btnUpdateServices.Click
    If cbxEmployee.Text = "" Then
        MsgBox("You must select a person in charge of health care giver.")
    Else
        InsertarHCG()

        Dim MyBuilder As MySql.Data.MySqlClient.MySqlCommandBuilder
        MyBuilder = New MySql.Data.MySqlClient.MySqlCommandBuilder(connect.cur_da)
        dgvServicePlan.EndEdit()

        Try
            connect.cur_da.Update(dt)
            clsLogger.logEvent("Changes in the service plan successful.")
            MessageBox.Show("Service plan successfully updated.")
        Catch ex As Exception
            MessageBox.Show("Could not update the service plan.")
        End Try

        Me.Close()
    End If