Hi everyone,
I need to bind a Progress.Data.BindingSource to a property of my user control.
But the only property visible to the bindind wizard is the "Tag". Actually, this could be enough for me, but then, I have to display the new data stored in the Tag, and have no "Tag_Changed" event.
Any idea how to bind a custom property or to retrieve the Tag change ?
Marc.
Your best bet is to create the UserControl in pure .net and add the [Bindable] attribute to the property you want to bind.
ABL has no support to add compile time attributes (msdn.microsoft.com/.../ms171726.aspx) to (User)Controls (although there should be some way to do it using reflection)
Take a look at msdn.microsoft.com/.../ms171926.aspx and msdn.microsoft.com/.../ms233813.aspx
It is possible in ABL - but a lot of work.
First your property needs to become .NET visible. That can only be done by implementing a .NET interface requiring that property.
Then you need to add the Bindable attribute. That is possible by implementing the ICustomTypeDescriptor interface, but a lot of work (I've been there).
The pure .nET implementation as suggested by Lieven is probably easier! the free c# express edition is enough for that.
Hello,
Creating a pure .NET control works fine ! Thanks !
Here's the piece of code I wrote in C# to do this :
[Bindable(true)]
public string TextNET
{
get { return TextNETProperty; }
set { TextNETProperty = value;
textbox1.Text = value;
if (this.MyNewBindedValue != null) this.MyNewBindedValue(this, EventArgs.Empty);
}
}
Then the .NET dll needs to be stored in the root directory of my OE project, and the binding works! :)