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SQl Parameter Conditions

sanjshah12 asked
Last Modified: 2012-08-30

I am using the sqldatasource to to bind to a gridview, using some QueryStringParameters such as:

                <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
                    ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
                    SelectCommand="SELECT [id], [Company], [Service], [System] FROM [tbl_records] WHERE (([System] = @System) AND ([Service] = @Service) AND ([Company] = @Company))">
                        <asp:QueryStringParameter DefaultValue="nothing" Name="System" QueryStringField="System"
                            Type="String" />
                        <asp:QueryStringParameter DefaultValue="nothing" Name="Service" QueryStringField="Service"
                            Type="String" />
                        <asp:QueryStringParameter DefaultValue="nothing" Name="Company" 
                            QueryStringField="Company" Type="String" />

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However I would like to make the QueryStringParameter optional so that the querystring could be just the room and service, or just room or a combination of any.

can I add a if statement to the sql?


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