We would have to write the below code to add a new item (with value) to any of these 5 controls (BulletedList, CheckBoxList, DropDownList, ListBox, RadioButtonList)

C#:

    bulletedList.Items.Add(new ListItem("text", "value"));
    checkBoxList.Items.Add(new ListItem("text", "value"));
    dropDownList.Items.Add(new ListItem("text", "value"));
    listBox.Items.Add(new ListItem("text", "value"));
    radioButtonList.Items.Add(new ListItem("text", "value"));

VB:

    bulletedList.Items.Add(New ListItem("text", "value"))
    checkBoxList.Items.Add(New ListItem("text", "value"))
    dropDownList.Items.Add(New ListItem("text", "value"))
    listBox.Items.Add(New ListItem("text", "value"))
    radioButtonList.Items.Add(New ListItem("text", "value"))

I find it quite painful to write so much code just to add a new item (with value) to these controls and so I created a new AddItem extension method for the ListControl class (since all these 5 controls inherit from the ListControl class)

C#:

    public static void AddItem(this ListControl lc, string text, string value)
    {
        lc.Items.Add(new ListItem(text, value));
    }

VB:

    <Extension()> _
    Public Sub AddItem(ByVal lc As ListControl, ByVal text As String, ByVal value As String)
        lc.Items.Add(New ListItem(text, value))
    End Sub

Now I can simply write the above code in a much simpler and cleaner way like below:

C#:

    bulletedList.AddItem("text", "value");
    checkBoxList.AddItem("text", "value");
    dropDownList.AddItem("text", "value");
    listBox.AddItem("text", "value");
    radioButtonList.AddItem("text", "value");

VB:

    bulletedList.AddItem("text", "value")
    checkBoxList.AddItem("text", "value")
    dropDownList.AddItem("text", "value")
    listBox.AddItem("text", "value")
    radioButtonList.AddItem("text", "value")

Just 1 extension method which works for 5 controls to solve the problem :-) Cheers to object inheritance and cheers to Extension Methods ;-)

Note: You can find a list of other cool and useful Extension Methods coded by me here

Cheers,
Raj

~~~ CODING FOR ETERNITY !!! ~~~