.NET (Core and Framework)

Private NotInheritable Class NativeMethods
   Public Declare ...

End Class

public interface IBar
{
  void DoSomethingInteresting();
}

public class Bar : IBar
{
  private IDependency dependency;
  public Bar(IDependency dependency)
  {
    if (dependency == null) throw new ArgumentNullException("dependency");
    this.dependency = dependency;
  }

  public void DoSomethingInteresting() {}
}

public class Foo
{
  private IDependency dependency;
  private IBar bar;
  public Foo(IDependency dependency, IBar bar)
  {
    if (dependency == null) throw new ArgumentNullException("dependency");
    if (bar == null) throw new ArgumentNullException("bar");
    this.dependency = dependency;
    this.bar = bar;
  }

  public void DoSomething()
  {
    bar.DoSomethingInteresting();
  }
}

Member 10506215 wrote:

Any suggestions?

txtticketnumber.Text = "9" + Format(cmbcustomer.SelectedValue, "0000")

Private Sub cmbcustomer_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles cmbcustomer.SelectedIndexChanged
    Try
        txtticketnumber.Text = "9" + Format(cmbcustomer.SelectedValue, "0000")
    Catch ex As Exception

    End Try

End Sub

cmbcustomer.DisplayMember = "company"
cmbcustomer.ValueMember = "serial"
cmbcustomer.DataSource = myds.Tables(0)