Exposing class properties for design time use

kanchoette

If I have a class:

public class Column
{

        private int \_columnWidth;
        
    \[Category("Columns")\]
    
    public int ColumnWidth
        {
            get { return \_columnWidth; }
            set { \_columnWidth = value; }
        }
    }

How can I expose the property 'ColumnWidth' for design time use please?

Omekudo Odafe Kingsley

Hi all, I also have the same issues if anyone can help he/she forward the answer to my e-mail address:omekings2000@yahoo.co.uk cos am currently building a project at hand now.

User 4467139

use browsable attribute. [BrowsableAttribute(true)]

kanchoette

Nice thought. But, however, this did not work for me.

moon_stick

Works for me - [System.ComponentModel.Browsable(true)]

It definitely isn't definatley

kanchoette

That's interesting. Mmm ... so in the code shown below, exactly where are you inserting the [System.ComponentModel.Browsable(true)] please?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace MultiColumnComboBox
{

public partial class MultiColumnComboBox : ComboBox
{
    
    public class Column
    {
        private bool \_autoWidth = true;
        private int \_columnWidth;

       
        public bool AutoWidth
        {
            get { return \_autoWidth; }
            set { \_autoWidth = value; }
        }
        
        public int ColumnWidth
        {
            get { return \_columnWidth; }
            set { \_columnWidth = value; }
        }
    }
    
    public MultiColumnComboBox()
    {
        InitializeComponent();
    }

    public MultiColumnComboBox(IContainer container)
    {
        container.Add(this);

        InitializeComponent();
    }
}

}

moon_stick

As an attribute on the property - in my code: [System.ComponentModel.Browsable(true)] public string DataItemLabelTitle { get { return this.lblDataItem.Text; } set { this.lblDataItemText = value; } }

It definitely isn't definatley

kanchoette

Yes, this works for me in your context. But when the property is contained within my class 'Column' it fails. Any ideas would be much appreciated.

moon_stick

When you place an instance of your combo box onto the designer window, the Property pane shows the browsable properties of that object. Your 'Column' class isn't a property - it isn't even an instance. What exactly are you expecting to see here? By entering a value in the property pane, what behaviour are you expecting?

It definitely isn't definatley

kanchoette

I was expecting to see the additional properties 'AutoWidth' and 'ColumnWidth'.

User 4467139

[Message Deleted]

kanchoette

I am creating a custom control.

moon_stick

You missed the point I was making - you can only display and change the properties for an instance of a class. What you're asking to do doesn't make any real sense.

It definitely isn't definatley

kanchoette

Your are right (of course). I realise my error now that I have had another jolt of coffee. Thanks for your patience. Mondays ..... :-O