Passing Event Arguments

[Tristan]

Problem: Unable to pass an argument to a Sub Routine, Using an
<asp:button> within the templates of a DataList to execute the sub and
pass an argument to.

The datalist is filled to display a list of movies, i want the button
to submit a PK to ID a movie so that i can show the information on a
particular movie in detail.

The LinkButton code:
<asp:LinkButton id=btnShowDetails runat="server"
text='<%#Container.dataitem("Movie_Name")%>'
commandargument='<%#Container.dataitem("Movie_id")%>'
onclick='<%#LoadMovies(Container.dataitem("Movie_id"))%>' />

Public Sub LoadMovies(ByVal movRef As String, ByVal sender As
System.Object, ByVal e As System.EventArgs)
pnlMovieList.Visible = False
'using the label to test if the argument is getting through.
lblError.Text = movRef

End Sub

Any suggestions or alternatives welcome!


Regards
Tristan

 

[Fred Sawtelle]

Tristan, you need to make LoadMovies your datalist's
OnItemCommand routine. In your datalist tag, if it isn't
already there, add the
property, "OnItemCommand="LoadMovies". Change the
signature of the routine to this:

Public Sub LoadMovies(ByVal sender As System.Object,
ByVal e As
System.Web.UI.WebControls.DataListCommandEventArgs)

Get rid of the "onclick" property of your linkbutton; the
datalist is going to handle that. And you don't need to
pass your Movie_id as a parameter to the routine, because
you've already stored it in your CommandArgument. Change
your display line to:

lblError.Text = e.CommandArgument

See how far that gets you.

Fred

 

[Tristan Gutsche]

Thankyou! that works perfectly. Very Much appreciated!