Question

I have a HeaderFile Common_Datas.h

//Common_Datas.h

public ref class MyDBDatas
{
//blah...blah...blah...

public: static System::Void Material_Name( System::Object^ Sender, System::Windows::Forms::KeyEventArgs^ e) {
//blah...blah...blah...
}

public: static System::Void Supplier_Name( System::Object^ Sender, System::Windows::Forms::KeyEventArgs^ e) {
//blah...blah...blah...
}
};

And now from my Form2 – textBox2 I would like to declare

textBox2->KeyDown += gcnew KeyEventHandler(MyDBDatas, &MyDBDatas::Supplier_Name);

1. Iam not getting the above line……..

2. Also I would like to learn same statement, how to use in “delegate” statemen?

   Thanks…

Answer 1

The first parameter in the delegate constructor is the object, not the type, that the delegate should be called on. Try this in the MyDBDatas constructor:

MyDBDatas()
{
    textBox2->KeyDown += gcnew KeyEventHandler(this, &MyDBDatas::Supplier_Name);
}                                              ^^^^