"bernadou" wrote:

> I’m trying to use the DataList and GridView to accomplish a Parent (or
> master), child  type of display (I’ve got that part), but I can’t seem to
> figure out how to handle events for the child GridView.  The display looks
> like this:
>
> Parent Record
>     Child Record [button]
>     Child Record [button]
> Parent Record   
>     Child Record [button]
>
> This was accomplished by dragging and dropping a grid view into the item
> template of the DataList that creates the Parent Record, and, setting the
> record source on the GridView using a where clause in the SQL that attaches
> to a field in the parent record.  All that works great!
>
> Handling the events is killing me.  Usually you can simply go to the code
> behind and use the dropdown boxes and VS2005 creates the appropriate event
> handlers for your control.  In this case (and if you are with me this far you
> might already understand what I’m about to write…) there isn’t an option for
> the GridView that makes up my child records.
>
> This is all very strange and I think I understand part of what is happening.
>  The GridView is now a control of the DataList control (right?), but how do I
> work with the click event of the buttons that are created.  I’m stumped.
>
> Thanks for any insight you can provide.
>
> B
>

"Phillip Williams" wrote:

> I can suggest 2 ways:
> 1- declaratively define the event handling method, e.g.
> OnSelectedIndexChanged="ChildGridView1_SelectedIndexChanged" within the
> markup of the grid
> 2- dynamically, during handling any of the events of the parent control,
> normally in your scenario it would be during the DataList.ItemCreated Event,
> wire up the event handler to the desired event of the child control.
>
> To see a demo (with source code) that uses both methods (where the nested
> controls are GridVeiw->GridVeiw->DetailsVeiw) you may review this demo:
> http://www.webswapp.com/CodeSamples/aspnet20/GridView_1c.aspx
>
> --
> HTH,
> Phillip Williams
> http://www.societopia.net
> http://www.webswapp.com
>
>
> "bernadou" wrote:
>
> > I’m trying to use the DataList and GridView to accomplish a Parent (or
> > master), child  type of display (I’ve got that part), but I can’t seem to
> > figure out how to handle events for the child GridView.  The display looks
> > like this:
> >
> > Parent Record
> >     Child Record [button]
> >     Child Record [button]
> > Parent Record   
> >     Child Record [button]
> >
> > This was accomplished by dragging and dropping a grid view into the item
> > template of the DataList that creates the Parent Record, and, setting the
> > record source on the GridView using a where clause in the SQL that attaches
> > to a field in the parent record.  All that works great!
> >
> > Handling the events is killing me.  Usually you can simply go to the code
> > behind and use the dropdown boxes and VS2005 creates the appropriate event
> > handlers for your control.  In this case (and if you are with me this far you
> > might already understand what I’m about to write…) there isn’t an option for
> > the GridView that makes up my child records.
> >
> > This is all very strange and I think I understand part of what is happening.
> >  The GridView is now a control of the DataList control (right?), but how do I
> > work with the click event of the buttons that are created.  I’m stumped.
> >
> > Thanks for any insight you can provide.
> >
> > B
> >

"bernadou" wrote:

> Phillip,
> Hi again.  Thanks for your continued assistance.
>
> I took a look at your example and I get it.  It is slightly different than
> what I'm trying to do, but, maybe that is because what I'm trying to do isn't
> possible.
>
> Your example hides the child records unless the user clicks the parent row. 
> I like this approach, but, it isn't the direction I was going to go.  Your
> example allows the parent's selected row index to remain in memory which you
> then use to identify the child control to work with the child control events.
>  All very slick.
>
> I'm unsuccessfully trying to figure out a way to show all the rows (parent
> and child) at the same time, and, somehow identify what button from the child
> row was clicked.  I may have to just punt and use your approach, but, I'm
> wondering if your clearly deeper knowledge on the subject has a quick
> suggestion how this might be done.
>
> The crux of the matter is here....
>
> If the user clicks the button at the end of any of the many ChildRows in my
> output, the Parent's ItemIndexChanged event doesn't fire (nor has it ever
> fired which leaves the parent's item index as Nothing), just the ChildGrid's
> ItemIndexChanged fires (atleast based on my debugging attempts). So when I
> try this test, I get a Null ref runtime err from the code below:
>
>
> Protected Sub ChildGrid_SelectedIndexChanged(ByVal sender As Object, ByVal e
> As System.EventArgs)
>
> ParentList1.SelectedItem.FindControl("ChildGrid").Visible = False
>
>        
>  End Sub
>
> So the question is how to identify the Parent row without actually clicking
> the parent row first? (I suspect this isn't possible....)
>
> Thanks once again for your input, it has been extreemly valuable.
>
> Bernie
>
> "Phillip Williams" wrote:
>
> > I can suggest 2 ways:
> > 1- declaratively define the event handling method, e.g.
> > OnSelectedIndexChanged="ChildGridView1_SelectedIndexChanged" within the
> > markup of the grid
> > 2- dynamically, during handling any of the events of the parent control,
> > normally in your scenario it would be during the DataList.ItemCreated Event,
> > wire up the event handler to the desired event of the child control.
> >
> > To see a demo (with source code) that uses both methods (where the nested
> > controls are GridVeiw->GridVeiw->DetailsVeiw) you may review this demo:
> > http://www.webswapp.com/CodeSamples/aspnet20/GridView_1c.aspx
> >
> > --
> > HTH,
> > Phillip Williams
> > http://www.societopia.net
> > http://www.webswapp.com
> >
> >
> > "bernadou" wrote:
> >
> > > I’m trying to use the DataList and GridView to accomplish a Parent (or
> > > master), child  type of display (I’ve got that part), but I can’t seem to
> > > figure out how to handle events for the child GridView.  The display looks
> > > like this:
> > >
> > > Parent Record
> > >     Child Record [button]
> > >     Child Record [button]
> > > Parent Record   
> > >     Child Record [button]
> > >
> > > This was accomplished by dragging and dropping a grid view into the item
> > > template of the DataList that creates the Parent Record, and, setting the
> > > record source on the GridView using a where clause in the SQL that attaches
> > > to a field in the parent record.  All that works great!
> > >
> > > Handling the events is killing me.  Usually you can simply go to the code
> > > behind and use the dropdown boxes and VS2005 creates the appropriate event
> > > handlers for your control.  In this case (and if you are with me this far you
> > > might already understand what I’m about to write…) there isn’t an option for
> > > the GridView that makes up my child records.
> > >
> > > This is all very strange and I think I understand part of what is happening.
> > >  The GridView is now a control of the DataList control (right?), but how do I
> > > work with the click event of the buttons that are created.  I’m stumped.
> > >
> > > Thanks for any insight you can provide.
> > >
> > > B
> > >

"Phillip Williams" wrote:

> Hi Bernie,
>
> I think that what you are attempting is possible to be done.  If you post
> the entire code of your datalist that contains those other controls I might
> get a more accurate description of the challenge you face in completing your
> design.
> --
> HTH,
> Phillip Williams
> http://www.societopia.net
> http://www.webswapp.com
>
>
> "bernadou" wrote:
>
> > Phillip,
> > Hi again.  Thanks for your continued assistance.
> >
> > I took a look at your example and I get it.  It is slightly different than
> > what I'm trying to do, but, maybe that is because what I'm trying to do isn't
> > possible.
> >
> > Your example hides the child records unless the user clicks the parent row. 
> > I like this approach, but, it isn't the direction I was going to go.  Your
> > example allows the parent's selected row index to remain in memory which you
> > then use to identify the child control to work with the child control events.
> >  All very slick.
> >
> > I'm unsuccessfully trying to figure out a way to show all the rows (parent
> > and child) at the same time, and, somehow identify what button from the child
> > row was clicked.  I may have to just punt and use your approach, but, I'm
> > wondering if your clearly deeper knowledge on the subject has a quick
> > suggestion how this might be done.
> >
> > The crux of the matter is here....
> >
> > If the user clicks the button at the end of any of the many ChildRows in my
> > output, the Parent's ItemIndexChanged event doesn't fire (nor has it ever
> > fired which leaves the parent's item index as Nothing), just the ChildGrid's
> > ItemIndexChanged fires (atleast based on my debugging attempts). So when I
> > try this test, I get a Null ref runtime err from the code below:
> >
> >
> > Protected Sub ChildGrid_SelectedIndexChanged(ByVal sender As Object, ByVal e
> > As System.EventArgs)
> >
> > ParentList1.SelectedItem.FindControl("ChildGrid").Visible = False
> >
> >        
> >  End Sub
> >
> > So the question is how to identify the Parent row without actually clicking
> > the parent row first? (I suspect this isn't possible....)
> >
> > Thanks once again for your input, it has been extreemly valuable.
> >
> > Bernie
> >
> > "Phillip Williams" wrote:
> >
> > > I can suggest 2 ways:
> > > 1- declaratively define the event handling method, e.g.
> > > OnSelectedIndexChanged="ChildGridView1_SelectedIndexChanged" within the
> > > markup of the grid
> > > 2- dynamically, during handling any of the events of the parent control,
> > > normally in your scenario it would be during the DataList.ItemCreated Event,
> > > wire up the event handler to the desired event of the child control.
> > >
> > > To see a demo (with source code) that uses both methods (where the nested
> > > controls are GridVeiw->GridVeiw->DetailsVeiw) you may review this demo:
> > > http://www.webswapp.com/CodeSamples/aspnet20/GridView_1c.aspx
> > >
> > > --
> > > HTH,
> > > Phillip Williams
> > > http://www.societopia.net
> > > http://www.webswapp.com
> > >
> > >
> > > "bernadou" wrote:
> > >
> > > > I’m trying to use the DataList and GridView to accomplish a Parent (or
> > > > master), child  type of display (I’ve got that part), but I can’t seem to
> > > > figure out how to handle events for the child GridView.  The display looks
> > > > like this:
> > > >
> > > > Parent Record
> > > >     Child Record [button]
> > > >     Child Record [button]
> > > > Parent Record   
> > > >     Child Record [button]
> > > >
> > > > This was accomplished by dragging and dropping a grid view into the item
> > > > template of the DataList that creates the Parent Record, and, setting the
> > > > record source on the GridView using a where clause in the SQL that attaches
> > > > to a field in the parent record.  All that works great!
> > > >
> > > > Handling the events is killing me.  Usually you can simply go to the code
> > > > behind and use the dropdown boxes and VS2005 creates the appropriate event
> > > > handlers for your control.  In this case (and if you are with me this far you
> > > > might already understand what I’m about to write…) there isn’t an option for
> > > > the GridView that makes up my child records.
> > > >
> > > > This is all very strange and I think I understand part of what is happening.
> > > >  The GridView is now a control of the DataList control (right?), but how do I
> > > > work with the click event of the buttons that are created.  I’m stumped.
> > > >
> > > > Thanks for any insight you can provide.
> > > >
> > > > B
> > > >