Managed C++/CLI

namespace ClassLibrary1
{
    public class Foo
    {
        public void NormalMethod()
        {
        }
    }
}

namespace ClassLibrary1
{
    public static class FooExtensions
    {
        public static void ExtensionMethod(this Foo foo)
        {
        }
    }
}

using namespace System;
using namespace ClassLibrary1;

int main(array<System::String ^> ^args)
{
	Foo^ f = gcnew Foo;
	f->NormalMethod(); // Extension method will not be available to call like this
	FooExtensions::ExtensionMethod(f); // Calling extension method by specifying the class name
    return 0;
}

N a v a n e e t h wrote:

Are you saying that from C++/CLI you are unable to use the extension method like the way you used it in C#?

N a v a n e e t h wrote:

C++/CLI won't support extension method and you can't use it like in C#

Martin# wrote:

I'd like to trust you, but is there a documentation which confirmes your statement?

Martin# wrote:

I'm a little confused because of the supportage of the "ExtensionAttribute

Martin# wrote:

which is nicely descriped in tis cp article[^]!

N a v a n e e t h wrote:

You can trust me

N a v a n e e t h wrote:

But if you take a look at C++/CLI's standard, you will not find anything related to extension method. And a search on the web also tells the same.

N a v a n e e t h wrote:

What it doesn't understand is to look for this specific attribute and show the method as an extension. This is simply because it is not implemented in the compiler.

N a v a n e e t h wrote:

It was a good read. Thanks for the link.

tonyt wrote:

I was a little confused by your original question

Jason Henderson wrote:

Tried running the CLR Profiler with the app but the clr doesn't start.

Nilesh Hamane wrote:

i was looking for some more different answers.

#ifndef _CSTDGV_
#define _CSTDGV_

namespace primoAlpha {

	using namespace System;
	using namespace System::Drawing;
	using namespace System::Windows::Forms;
	using namespace System::Security::Permissions;
	
	/**
	 * Classe per la gestione di un DataGridView personalizzato
	 * per una gestione tramite delegate del riordinamento delle colonne
	 * e per permettere di selezionare multiline senza il tasto control premuto
	 * 
	 * @author      Carlo Andreoli
	 * @version     0.1.0, 24/07/09 -- Prima versione (beta)
	 */
	public ref class personalDataGridView : DataGridView
	{	
	public:

		/**
		 * Costruttore dove inizializzo le variabili che estendono la classe base
		 * 
		 * @author      Carlo Andreoli
		 * @version     0.1.0, 24/07/09 -- Prima versione (beta)
		*/
		personalDataGridView()
		{
			this->selectedRowIndexes=gcnew Collections::ArrayList();
			this->MultiSelectForced=false;
		}
		
		/**
		* variabile per gestire i selected senza il control selezionato
		*/
		property bool MultiSelectForced
		{
			bool get() {
				return _MultiSelectForced;
			} 
			void set(bool value) {
				this->_MultiSelectForced = value;
				this->selectedRowIndexes->Clear();
				processSelectedRowIndexes();
			}
		}
	protected:
		/**
		 * override sulla funzione che gestisce OnCellMouseDown 
		 * per gestire il multiselect senza il tasto del ctr schiacciato
		 * @param		e
		 * 
		 * @author      Carlo Andreoli
		 * @version     0.1.0, 24/07/09 -- Prima versione (beta)
		*/
		virtual void OnCellMouseDown(DataGridViewCellMouseEventArgs^ e) override
		{
			DataGridView::OnCellMouseDown(e);
			if (e!=nullptr && _MultiSelectForced) {
				int act_row=e->RowIndex;
			
				if (selectedRowIndexes->Contains(act_row)) {
					selectedRowIndexes->Remove(act_row);
				}
				else selectedRowIndexes->Add(act_row);

				//ora vado ad indicare i selezionati e quelli no
				processSelectedRowIndexes();
			}
		}
		/**
		 * override sulla funzione che gestisce OnMouseMove 
		 * per gestire il multiselect senza il tasto del ctr schiacciato
		 * @param		e
		 * 
		 * @author      Carlo Andreoli
		 * @version     0.1.0, 24/07/09 -- Prima versione (beta)
		*/
		virtual void OnMouseMove(MouseEventArgs^ e) override
		{}
	private:
		/**
		* lista di interi per tenere tracci dei valori selezionati
		*/
		Collections::ArrayList ^selectedRowIndexes;
		/**
		* variabile per gestire i selected senza il control selezionato
		*/
		bool _MultiSelectForced;
		
		/**
		 * funzione che processa la lista personalizzata dei delezionati
		 * 
		 * @author      Carlo Andreoli
		 * @version     0.1.0, 24/07/09 -- Prima versione (beta)
		*/
		void processSelectedRowIndexes() {
			this->SuspendLayout();
			this->ClearSelection();
			for (int i=0;i<selectedRowIndexes->Count;i++) {
				if (selectedRowIndexes[i]!="0") {
					this->Rows[Convert::ToInt32(selectedRowIndexes[i]->ToString())]->Selected=true;
				}
			}
			this->ResumeLayout();
		}
	};

}

#endif

Xpnctoc wrote:

ArgumentException: Top-level control cannot be added to a control.

Mark Salsbery
Microsoft MVP - Visual C++