Question

Pardon my ignorance of delegates. I’m trying to register a handler for a GridView event in an asp.net WinForms page:

Class myClass
{
    void grid_rowDataBound(object sender, GridViewCommandEventArgs e)
    { blah blah }
}

myClass myClassInstance = new myClass(); //done in Page_Load

<asp:GridView ID="server_grid" runat="server" OnRowDataBound="myClassInstance.grid_RowDataBound">
    yadda yadda
</asp:GridView>

I am getting a runtime error “Delegate to an instance method cannot have null ‘this'”. My only solution at this point is to define a new page function that simply calls my class method and register that page function in OnRowDataBound. But isn’t there a direct way to register a class method for GridView events without the indirection? Or do all page contol events require handlers defined in the page class?

Answer 1

You could use the following, but then this is just a short way of defining a new function like you already suggested.

server_grid.RowDataBound += (s,e) => myClassInstance.grid_RowDataBound(s, e);