ObjectDataSource OnSelected event raised twice

C

chris.c.woodward

This event seems to be being raised twice in my codebehind. I have
only one SelectMethod and do not have a SelectCountMethod. 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_Selected(object sender,
ObjectDataSourceStatusEventArgs e)
{
Response.Write("event called");
Response.Write("<br />");


if (e.ReturnValue != null)
{
PagedDataSource pds = (PagedDataSource)e.ReturnValue;
totalRowCount = pds.DataSourceCount;

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

if (PlaceHolder1.Controls.Count == 0)
{
Control control1 = Page.LoadControl("~/UserControls/
NumericPager.ascx");
UserControls_NumericPager numericPager1 =
(UserControls_NumericPager)control1;
numericPager1.PageCount = pageCount;
numericPager1.PageIndex = pageIndex;
PlaceHolder1.Controls.Add(numericPager1);
}
}
}


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

nahid

This event seems to be being raised twice in my codebehind. I have
only one SelectMethod and do not have a SelectCountMethod. 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_Selected(object sender,
ObjectDataSourceStatusEventArgs e)
{
Response.Write("event called");
Response.Write("<br />");

if (e.ReturnValue != null)
{
PagedDataSource pds = (PagedDataSource)e.ReturnValue;
totalRowCount = pds.DataSourceCount;

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

if (PlaceHolder1.Controls.Count == 0)
{
Control control1 = Page.LoadControl("~/UserControls/
NumericPager.ascx");
UserControls_NumericPager numericPager1 =
(UserControls_NumericPager)control1;
numericPager1.PageCount = pageCount;
numericPager1.PageIndex = pageIndex;
PlaceHolder1.Controls.Add(numericPager1);
}
}
}

Anybody got any ideas why this event is being called twice?
Click to expand...

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

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

chris.c.woodward

Thanks for your reply.

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

<asp:DataList ID="dlCatalogues" runat="server"
DataSourceID="odsCatalogues" EnableViewState="false">

...

</asp:DataList>

<asp:ObjectDataSource ID="odsCatalogues" runat="server"
SelectMethod="SelectCatalogues" TypeName="AGT.Business.EventDB"
OnSelected="odsCatalogues_Selected"
OnSelecting="odsCatalogues_Selecting">
<SelectParameters>
<asp:QueryStringParameter ... /<asp:QueryStringParameter ... /<asp:QueryStringParameter ... /<asp:parameter ... />
</SelectParameters>
</asp:ObjectDataSource>
 
N

nahid

Thanks for your reply.

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

<asp:DataList ID="dlCatalogues" runat="server"
DataSourceID="odsCatalogues" EnableViewState="false">

...

</asp:DataList>

<asp:ObjectDataSource ID="odsCatalogues" runat="server"
SelectMethod="SelectCatalogues" TypeName="AGT.Business.EventDB"
OnSelected="odsCatalogues_Selected"
OnSelecting="odsCatalogues_Selecting">
<SelectParameters>
<asp:parameter ... />
<asp:ControlParameter ... /

<asp:QueryStringParameter ... /

<asp:QueryStringParameter ... /

<asp:QueryStringParameter ... /

<asp:parameter ... />
</SelectParameters>
</asp:ObjectDataSource>
Click to expand...

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
 
C

chris.c.woodward

Think I've figured out what was going on.

The ObjectDataSource markup contained this line:

<asp:ControlParameter DefaultValue="0" Name="clientId" Type="Int32"
ControlID="DDList1" PropertyName="SelectedValue" />

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

Replacing the line with:

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

and setting the value in the ObjectDataSource Selecting event:

protected void odsCatalogues_Selecting(object sender,
ObjectDataSourceSelectingEventArgs e)
{
e.InputParameters["clientId"] =
Convert.ToInt32(DDList1.SelectedValue);
}

meant that my DataList databinding was now not occurring twice.

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

:)
 
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