Question

According to MSDN (http://msdn.microsoft.com/en-us/library/system.windows.forms.label.autosize.aspx), there’s a note about Label‘s AutoSize property:

When added to a form using the designer, the default value is true. When instantiated from code, the default value is false.

The question is: how can I override a Label control and set its AutoSize property’s design-time default value to false?

(Update)

And this doesn’t work:

class MyLabel : Label
{
    const bool defaultAutoSize = false;

    public MyLabel()
    {
        AutoSize = defaultAutoSize;
    }

    [DefaultValue(defaultAutoSize)]
    public override bool AutoSize
    {
        get
        {
            return base.AutoSize;
        }
        set
        {
            base.AutoSize = value;
        }
    }
}

Answer 1

The Label control has an attribute:

[ToolboxItem("System.Windows.Forms.Design.AutoSizeToolboxItem,System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]

which cause the strange AutoSize problem.

I can disable it by this:

[ToolboxItem(true)]
class MyLabel : Label
{
}