GridView Delete with bootbox.confirm always returning false

Question

I'm trying to delete a record from a Gridview using a LinkButton inside a TemplateField. My LinkButton should open a bootbox.confirm() and based on the return value do a call to the GridView.RowCommand handler in the backend.

GridView Layout:

<asp:GridView ID="gvEntRelationship" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False"  DataKeyNames="OFTID" DataSourceID="ObjectDataEntRelations" EnableModelValidation="True" >`
   <Columns>
     <asp:CommandField ShowEditButton="True" />
     <asp:TemplateField ShowHeader="False">
        <ItemTemplate>
           <asp:LinkButton ID="lnkDelRel" runat="server" CausesValidation="False" CommandName="Del" Text="Delete" OnClientClick="return OpenDeleteBox(this);"></asp:LinkButton>
        </ItemTemplate>
     </asp:TemplateField>
  </Columns>
</asp:GridView>

Javascript:

function OpenDeleteBox(sender) {
            bootbox.confirm("Delete This?", function (confirmed) {
                if (confirmed) {
                    alert('if');
                    return true;
                }
            });
            alert('outside');
            return false;         
        }

I'm using the OnClientClick to call the javascript function. When inside function, I see the alert('outside') (implying it already returns false) and then the bootbox shows up. If I move the return false into an else clause like:

 bootbox.confirm("Delete This?", function (confirmed) {
                if (confirmed) {
                    alert('in if');
                    return true;
                }
                else {
                    return false;
                }
            });

It goes ahead and deletes the record using the GridView.RowCommand handler without waiting for the confirmbox to even show up.

EDIT: seemed to do the job

function OpenDeleteBox(sender) {
            if ($(sender).attr("confirmed") == "true") { return true; }
            bootbox.confirm("Delete This?", function (confirmed) {
                if (confirmed) {
                    $(sender).attr("confirmed", confirmed);
                    sender.click();
                }
            });

            return false;

        }

Answer 1

Check out these posts.

OnClientClick="return confirm('Are you sure you want delete');"

Confirm for Linkbutton before performing delete in asp.net

I think you need to use default javascript confirm function with LinkButton. Seems bootbox confirm cannot be used. It's the default behavior.