Can TextBox.Text ever be null?

Recently I have been asked this question. Answer is that it cannot be null and will not be null, so you don't have to:

.Text != null

Why? Because .Text property in base class does:

    set 
    { 
        if (value == null) 
        { 
            value = ""; 
        } 
	..... 
    }

Above is for TextBox from Windows.Forms, as for TextBox from WebControls it's the same. The getter looks like this:

    get 
    { 
        string str = (string) this.ViewState["Text"]; 
        if (str != null) 
        { 
            return str; 
        } 
        return string.Empty; 
    }

If you don't believe me just try to assign a null value :-)