Collection property does not update control

[--== Alain ==--]

Hi,

I have a collection property in my custom control like this one :

[Category("Behav ior")]
[Browsable(true)]
[Description("Co lumn Collection")]
[DesignerSeriali zationVisibilit y(DesignerSeria lizationVisibil ity.Content)]
[Editor(typeof(C olumnCollection Editor),typeof( System.Drawing. Design.UITypeEd itor))]
public ColumnCollectio n Columns
{
get
{
if (this.m_columns == null)
{
this.m_columns = new ColumnCollectio n(this);
}
return this.m_columns;
}
}

it works very well, except one thing.

When the number of columns increase or decrease, it should redraw/update
the control, but nothing occurs.
I have to click somewhere on the form to update the control.

I tried to use eventhandlers, but where to use them when there is not
"set" in this property ?

I tried to add them in my ColumnCollectio n class where is the method to
add column and into the method to remove a column, but nothing worked.

Any ideas ?

thx.

Al.

[--== Alain ==--]

nobody has an idea ?

--== Alain ==-- wrote:

Hi,

I have a collection property in my custom control like this one :

[Category("Behav ior")]
[Browsable(true)]
[Description("Co lumn Collection")]
[DesignerSeriali zationVisibilit y(DesignerSeria lizationVisibil ity.Content)]
[Editor(typeof(C olumnCollection Editor),typeof( System.Drawing. Design.UITypeEd itor))]

public ColumnCollectio n Columns
{
get
{
if (this.m_columns == null)
{
this.m_columns = new ColumnCollectio n(this);
}
return this.m_columns;
}
}

it works very well, except one thing.

When the number of columns increase or decrease, it should redraw/update
the control, but nothing occurs.
I have to click somewhere on the form to update the control.

I tried to use eventhandlers, but where to use them when there is not
"set" in this property ?

I tried to add them in my ColumnCollectio n class where is the method to
add column and into the method to remove a column, but nothing worked.

Any ideas ?

thx.

Al.