I have created a custome web control that inherits from a grdiview.  I was asked to create a custom event called deselect which fires when 1 or more rows have been selected and as a result of a user action causes there to be no rows selected.  There were to be no arguments passed into this event so I created a custom delegate.  The update panel doesn't recognize the event as event without input arguments though.  Is there any way around this?

Hi c1derly ,

Please post your code .

 Here is the code.

This is the declaration of the delegate and the event varialble.

        public delegate void onNestedGridViewDeslectEvent();

        [Category("NestedGridViewAction")]
        public event onNestedGridViewDeslectEvent deselect;

 Update panel and its contents

 <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" >
    <ContentTemplate>
        &nbsp;

<cc1:nestedgridview id="NestedGridView1" runat="server" cellpadding="4"
    childpagesize="5" childpaging="False" collapsetext="~/Configuration/Images/collapse.gif"
    expandcolumnwidth="18px" expandtext="~/Configuration/Images/expand.gif" forecolor="Black"  multiselection="True" parentchildcongruent="True"
    relationname="ParentChildEntry" width="100%" DataSourceID="ods" DataKeyNames="pom_entry_pk" OnSelectedIndexChanged="NestedGridView1_SelectedIndexChanged" setChildDataKeyNames="pom_entry_pk,prnt_pom_entry_pk" BackColor="#CCCCCC" BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px" CellSpacing="2" Ondeselect="NestedGridView1_deselect" OnmultiSelectionStatusChanged="NestedGridView1_multiSelectionStatusChanged"  style="display:none">
<FooterStyle BackColor="#CCCCCC"></FooterStyle>

<HeaderStyle BackColor="Black" ForeColor="White" Font-Bold="True"></HeaderStyle>

<PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left"></PagerStyle>

<SelectedRowStyle BackColor="#000099" ForeColor="White" Font-Bold="True"></SelectedRowStyle>
<RowStyle BackColor="White"></RowStyle>
</cc1:nestedgridview>
<asp:ObjectDataSource TypeName="Siemens.MES.CAB.TPLPOH.Domain.Interfaces.IBreadHierarchicalEntries" SelectMethod="getEntries" OnObjectCreating="ods_ObjectCreating" ID="ods" runat="server">
 <SelectParameters>
  <asp:SessionParameter DefaultValue="-1" SessionField="orderPK" Name="orderPk" />
 </SelectParameters>
</asp:ObjectDataSource>
        <asp:Panel ID="Panel1" runat="server" Width="100%">
            <asp:Button ID="btnDownload" runat="server" CssClass="button" OnClick="btnDownload_Click"
                Text="Download" Width="133px" />&nbsp;
                 <asp:Button ID="btnProperties" runat="server" CssClass="button" OnClick="btnProperties_Click"
                Text="Properties" Width="133px" />
                 <asp:Button ID="btnEdit" runat="server" CssClass="button" OnClick="btnEdit_Click"
                Text="Edit" Width="133px" />
          
            <asp:Button ID="btnSplit" runat="server" CssClass="button" OnClick="btnSplit_Click"
                Text="Split" Width="133px" />
           
          
            <asp:Button ID="btnChangeStatus" runat="server" CssClass="button" OnClick="btnChangeStatus_Click"
                Text="ChangeStatus" Width="133px" />
            &nbsp; &nbsp;
            <asp:HyperLink ID="hypOpenPopup" runat="server" Target="_blank">HyperLink</asp:HyperLink></asp:Panel>
    </ContentTemplate>
    <Triggers>
<asp:AsyncPostBackTrigger  ControlID="NestedGridViewSingleSelection1$NestedGridView1" EventName="SelectedIndexChanged"/>
<asp:AsyncPostBackTrigger  ControlID="NestedGridViewSingleSelection1$NestedGridView1" EventName="deselect"/>
<asp:AsyncPostBackTrigger  ControlID="NestedGridViewSingleSelection1$NestedGridView1" EventName="childGridView_SelectedIndexChanging"/>

</Triggers>
</asp:UpdatePanel>

Function Declared In the code to link the deselect event.

    protected void NestedGridView1_deselect()
    {

        Session.Add("orderPK", "-1");
        ((ObjectDataSource)this.Page.FindControl("NestedGridViewMultiSelection1$ods")).Select();
        ((NestedGridView.NestedGridView)this.Page.FindControl("NestedGridViewMultiSelection1$NestedGridView1")).Style.Add("display","none");

    }