ObjectDataSourc e OnSelected event raised twice

[chris.c.woodward]

This event seems to be being raised twice in my codebehind. I have
only one SelectMethod and do not have a SelectCountMeth od. Its causing
a problem because I'm dynamically loading a user control into a
PlaceHolder control in the method and am having to do a check to see
if it already exists or not otherwise it gets loaded twice. Also it
would be nice to figure out what the heck is going on! Here is the
code ...
protected void odsCatalogues_S elected(object sender,
ObjectDataSourc eStatusEventArg s e)
{
Response.Write( "event called");
Response.Write( "<br />");
if (e.ReturnValue != null)
{
PagedDataSource pds = (PagedDataSourc e)e.ReturnValue ;
totalRowCount = pds.DataSourceC ount;

lblPageInfo.Tex t = totalRowCount + " records found. Page "
+ (pageIndex + 1) + " of " + pageCount;

if (PlaceHolder1.C ontrols.Count == 0)
{
Control control1 = Page.LoadContro l("~/UserControls/
NumericPager.as cx");
UserControls_Nu mericPager numericPager1 =
(UserControls_N umericPager)con trol1;
numericPager1.P ageCount = pageCount;
numericPager1.P ageIndex = pageIndex;
PlaceHolder1.Co ntrols.Add(nume ricPager1);
}
}
}
Anybody got any ideas why this event is being called twice?

[nahid]

On Jul 10, 8:25 pm, chris.c.woodw.. [e-mail] wrote:

This event seems to be being raised twice in my codebehind. I have
only one SelectMethod and do not have a SelectCountMeth od. Its causing
a problem because I'm dynamically loading a user control into a
PlaceHolder control in the method and am having to do a check to see
if it already exists or not otherwise it gets loaded twice. Also it
would be nice to figure out what the heck is going on! Here is the
code ...

protected void odsCatalogues_S elected(object sender,
ObjectDataSourc eStatusEventArg s e)
{
Response.Write( "event called");
Response.Write( "<br />");

if (e.ReturnValue != null)
{
PagedDataSource pds = (PagedDataSourc e)e.ReturnValue ;
totalRowCount = pds.DataSourceC ount;

lblPageInfo.Tex t = totalRowCount + " records found. Page "
+ (pageIndex + 1) + " of " + pageCount;

if (PlaceHolder1.C ontrols.Count == 0)
{
Control control1 = Page.LoadContro l("~/UserControls/
NumericPager.as cx");
UserControls_Nu mericPager numericPager1 =
(UserControls_N umericPager)con trol1;
numericPager1.P ageCount = pageCount;
numericPager1.P ageIndex = pageIndex;
PlaceHolder1.Co ntrols.Add(nume ricPager1);
}
}
}

Anybody got any ideas why this event is being called twice?

can you pleasae provide some aditional code how do you bind the grid

nahid
http://nahidulkibria.blogspot.com/
http://www.kaz.com.bd

[chris.c.woodward]

Thanks for your reply.

I'm using a DataList bound to an ObjectDataSourc e. Here is the HTML
markup in the relevant .aspx page with some code removed for clarity:

<asp:DataList ID="dlCatalogue s" runat="server"
DataSourceID="o dsCatalogues" EnableViewState ="false">

...

</asp:DataList>

<asp:ObjectData Source ID="odsCatalogu es" runat="server"
SelectMethod="S electCatalogues " TypeName="AGT.B usiness.EventDB "
OnSelected="ods Catalogues_Sele cted"
OnSelecting="od sCatalogues_Sel ecting">
<SelectParamete rs>
<asp:Paramete r ... />
<asp:ControlPar ameter ... /

>

<asp:QueryStrin gParameter ... /

>

<asp:QueryStrin gParameter ... /

>

<asp:QueryStrin gParameter ... /

>

<asp:Paramete r ... />
</SelectParameter s>
</asp:ObjectDataS ource>

[nahid]

On Jul 11, 2:35 pm, chris.c.woodw.. [e-mail] wrote:

Thanks for your reply.

I'm using a DataList bound to an ObjectDataSourc e. Here is the HTML
markup in the relevant .aspx page with some code removed for clarity:

<asp:DataList ID="dlCatalogue s" runat="server"
DataSourceID="o dsCatalogues" EnableViewState ="false">

...

</asp:DataList>

<asp:ObjectData Source ID="odsCatalogu es" runat="server"
SelectMethod="S electCatalogues " TypeName="AGT.B usiness.EventDB "
OnSelected="ods Catalogues_Sele cted"
OnSelecting="od sCatalogues_Sel ecting">
<SelectParamete rs>
<asp:Paramete r ... />
<asp:ControlPar ameter ... /

<asp:QueryStrin gParameter ... /

<asp:QueryStrin gParameter ... /

<asp:QueryStrin gParameter ... /

<asp:Paramete r ... />
</SelectParameter s>
</asp:ObjectDataS ource>

can you please check this post
http://www.dotnetspider.com/qa/Question13248.aspx
hope help

nahid
http://nahidulkibria.blogspot.com/
http://www.kaz.com.bd

[chris.c.woodward]

Think I've figured out what was going on.

The ObjectDataSourc e markup contained this line:

<asp:ControlPar ameter DefaultValue="0 " Name="clientId" Type="Int32"
ControlID="DDLi st1" PropertyName="S electedValue" />

where DDList1 is actually a data driven UserControl I have created.

Replacing the line with:

<asp:Paramete r DefaultValue="0 " Name="clientId" Type="Int32" />

and setting the value in the ObjectDataSourc e Selecting event:

protected void odsCatalogues_S electing(object sender,
ObjectDataSourc eSelectingEvent Args e)
{
e.InputParamete rs["clientId"] =
Convert.ToInt32 (DDList1.Select edValue);
}

meant that my DataList databinding was now not occurring twice.

Still not sure why this should be but this work around has fixed it.

:)