How to add custom attributes to ASP.NET controls

Question

I've got an ASP.NET control say checkbox:

<asp:CheckBox ID="myChck" runat="server" Value="myCustomValue" />

Is it possible to add this custom Value attribute from code-behind and respectively get the value from Value

Something like (psuedocode):

myCkck.Value = "blq blq";
string chckValue = myChck.Value;

How can I do this?

Answer 1

It's perfectly possible:

myCkck.Attributes.Add("Value", "blq blq");

string chckValue = myChck.Attributes["Value"].ToString();

Answer 2

You could create a new class that inherits the CheckBox class (or any other control class for that matter) and add any further properties you need to the derived class. That way you would get an extended CheckBox more or less.

public class ExtendedCheckBox : CheckBox
{
    public string Value
    {
        get;
        set;
    }

    public ExtendedCheckBox : base()
    {

    }
}