SharpDevelop Community

I have problem with my custom control collection property on Compact Framework - no correct code generated in InitializeComponent(). As a result I can open CollectionEditor, can insert new items, can assign property values in design-time, but this items and its properties don't saved when project reopened. I found some mistake in InitializeControl() autogenerated code - may be it's a result of my collection class realization errors.

Please, help me.
This is my code:

    //simple item class
    public class GridColumnItem
    {
        //fields, properties & etc...
    }
    // collection class
    public class GridColumns : System.Collections.CollectionBase
    {
        public GridColumns()
        {
        }
        public void Add(GridColumnItem item)
        {
            if (List.IndexOf(item) == -1)
                List.Add(item);
        }
        public void AddRange(GridColumnItem[ items)
        {
            foreach (GridColumnItem clm in items)
                List.Add(clm);
        }
        public int IndexOf(GridColumnItem item)
        {
            return List.IndexOf(item);
        }
        public void Insert(int index, GridColumnItem item)
        {
            List.Insert(index, item);
        }
        public void Remove(GridColumnItem item)
        {
            List.Remove(item);
        }
        public bool Contains(GridColumnItem item)
        {
            return List.Contains(item);
        }
        public ArrayList Items()
        {
            return this.InnerList;
        }
        public GridColumnItem this[int index]
        {
            get { return (GridColumnItem)List[index];}
            set { List[index] = value;}
        }
    }
    // collaction usage
    public partial class EnhGrid : DataGrid
    {
        private GridColumns columns = null;
        public GridColumns Columns
        {
            get {
                if (columns == null)
                    columns = new GridColumns();
                return columns;
            }
            set {
                if (columns == null)
                    columns = new GridColumns();
                columns.AddRange((GridColumnItem[)value.Items().ToArray(typeof(GridColumnItem)));
            }
        }

All GridColumnItem items initilalization are generated in x.designer.cs module, but property EnhGrid.Columns does not initialized. New instance of GridColumns does not assigned to Columns property:
            
   new GridColumns().AddRange(new GridColumnItem[ {...}); //No any assignments...

But I expected the next:

   Grid1.Columns.AddRange(new GridColumnItem[ {...});

All works good if I corrent this line manualy, but after source modifications this line generated again....

Will be very grateful for any help.
Best regards, Sergey.

 Sergey,

 Have you figured out a solution for your problem. I'm having the exact same issue and for the life of me can't figure it out.

 Thanks!

Dylan

I found more simple solution for my task, than an attempt to resolve the problems with class serialization.
I wrote a method to override items in the source collection. This method calls on FormLoad event:

public partial class EnhGrid : DataGrid
{
    ...
    public int InitColumns(...)
    {
        DataGridTableStyle grStyle; // item of the table style collection
        DataGridColumnStyle col; // item of the column style collection

        if ((this.Site != null) && (!this.Site.DesignMode) && (TableStyles.Count > 0))
        {
            grStyle = new DataGridTableStyle(); // create new table style item
            // copy properties values
            ...

            foreach (DataGridColumnStyle clm in TableStyles[0].GridColumnStyles)
            {
                // create my own collection item dirived from DataGridTextBoxColumn
                col = new ColumnStyle(...);

               // init properties etc.
               ...

               grStyle.GridColumnStyles.Add(col);
            }

            // replace source collection property
            TableStyles.Clear();
            TableStyles.Add(grStyle);

             ...
        }
    }
...