Vb to C# code conversion with Raise Event

Question

I am trying to convert the code for the following method.
I am not sure how to go about it since there isn't a equivalent in C# to raise event.

What I want to happen is the Gridview page index changing gets bubbled up to my UI so I can do some code in the event right now nothing happens because this is a custom pager template class that is set to the gridview.

    public delegate void PageIndexChanging(object sender, GridViewPageEventArgs e);
     public event  PageIndexChanging PagerPageIndexChanging;

    Private Sub NextLinkBtn_Click(ByVal Sender As Object, ByVal e As EventArgs) Handles NextLinkBtn.Click

    Dim gridView As GridView = _container.NamingContainer.NamingContainer

    If (gridView.PageIndex < gridView.PageCount - 1) Then
        gridView.PageIndex = gridView.PageIndex + 1

    End If

    FormatPager(gridView)

    'Raise PagerPageIndexChanging, passing it the GridView instance using this custom pager template.
    RaiseEvent PagerPageIndexChanging(gridView, New GridViewPageEventArgs(gridView.PageIndex))

End Sub

More Detail on the question.

I have a gridview on a aspnet page. I have a class level variable for the pagertemplate

 public PagerTemplate GridPagerTemplate = new PagerTemplate();

Then in the grids init method I attach the gridpager template to the grids.PagerTemplate... Everything works it does the first next prev last etc... The problem I am having is after I converted the code from Vb.net to C# That I cant raise the event from the PagerTemplate class in order to get it to execute on the webpage...

protected void ui_grdGuests_Init(object sender, EventArgs e)
   {

     if (GridPagerTemplate != null)
       {

          ui_grdGuests.PagerTemplate = GridPagerTemplate;
        }
    }

Trying to put a break point here in the web form because this is where I need to get it to come after executing the code in the pagertemplate.

protected void ui_grdGuests_PageIndexChanging(object sender, GridViewPageEventArgs e)
     {

     }

Answer 1

ok I figured it out. Here is how I did it.

Pager template has a delegate and an event

 public delegate void PageIndexChangingHandler(object sender, GridViewPageEventArgs e);

        public event PageIndexChangingHandler PagerPageIndexChanging;


        private void NextLinkBtn_Click(object sender, EventArgs e)
        {


            _gridView = _container.NamingContainer.NamingContainer as GridView;


            if (_gridView != null && (_gridView.PageIndex < _gridView.PageCount - 1))
            {
                _gridView.PageIndex = _gridView.PageIndex + 1;
                _gridView.SelectedIndex = -1;

            }

            FormatPager(_gridView);

            //Raise PagerPageIndexChanging, passing it the GridView instance using this custom pager template.
            if (PagerPageIndexChanging != null)
            {
                PagerPageIndexChanging(_gridView, new GridViewPageEventArgs(_gridView.PageIndex));
            }
        }

on the web form I did subscribed to that event...

 GridPagerTemplate.PagerPageIndexChanging += new Classes.PagerTemplate.PageIndexChangingHandler(GridPagerTemplate_PagerPageIndexChanging);

  void GridPagerTemplate_PagerPageIndexChanging(object sender, GridViewPageEventArgs e)
        {

        }

Answer 2

In C#, it looks like the following:

if (PagerPageIndexChanging != null)[
{
    PagerPageIndexChanging(gridView, new GridViewPageEventArgs(gridView.PageIndex))
}

Beforehand, you will need to subscribe to the event somewhere, such as:

gridview.PagerPageIndexChanging += gridview_PagerPageIndexChanging;

where gridview_PagerPageIndexChanging is a method with the same signature as your delegate above.