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Subclassing a control
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To
14/07/2008 15:50:03
Timothy Bryan
Sharpline Consultants
Conroe, Texas, United States
General information
Forum:
ASP.NET
Category:
The Mere Mortals .NET Framework
Environment versions
Environment:
C# 2.0
OS:
Windows Server 2003
Network:
Windows 2003 Server
Database:
MS SQL Server
Miscellaneous
Thread ID:
01329290
Message ID:
01331397
Views:
18
Tim,
Thanks. Sometimes you just have to learn how to outsmart these things. I thought it was something I was missing about how to subclass the controls.

>Linda,
>
>>>>I am trying to create a class based on the mmTextBox class. I created a new class of UserControl, added the OakLeaf.MM.Main.Windows.Forms namespace and changed the parent class to mmTextBox. I then tried to change several properties, such as BackColor, Font, etc. I get an error when I compile indicating that the properties are readonly. How do I need to go about this? The code I tried is below. Thanks.
>>>>
>>>>
>>>>    public partial class EditStatusTextBox : mmTextBox
>>>>    {
>>>>        public EditStatusTextBox()
>>>>        {
>>>>            InitializeComponent();
>>>>            this.Text = "View";
>>>>            this.BackColor.R = 255;
>>>>            this.BackColor.G = 255;
>>>>            this.BackColor.B = 128;
>>>>        }
>>>>    }
>>>>
>>>
>>>Try to set them through extra properties.
>>
>>Naomi,
>>I don't know what you mean by that. I can't imagine how I would set up a new property for a font style or BackColor, since there are already properties with those names.
>
>You cannot set these properties this way apparently. You can however set the BackColor property other ways like this:
>this.BackColor = Color.Red; a named color. Or:
>this.BackColor = Color.FromArgb(255,255,128);
>
>Tim
>
>Update: The help file for VS confirms the .R, .G, .B properties are read only.
Linda Harmes
HiBit Technologies, Inc.
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