ControlParameter And Stored Procedures

I'm sure I'm missing something silly.  I have 3 textboxes, a stored procedure and a gridview.  The user will put something in the 3 boxes, click submit, and see a grid with stuff (I hope).  However, the grid will only return data is I EXCLUDE the controlparameters and only use the sessionparameter.  It's like the stored proc won't even fire!

HTML:

<form id="form1" runat="server">
<div>
Lastname:&nbsp;<asp:textbox id="Lastname" runat="server"></asp:textbox>
Hobbies:&nbsp;<asp:textbox id="Hobbies" runat="server"></asp:textbox><br />
Profession:&nbsp;<asp:textbox id="Profession" runat="server"></asp:textbox>
<asp:button id="Button1" runat="server" text="Button" /><br />
<asp:gridview skinid="DataGrid" id="GridView1" runat="server" allowpaging="True" allowsorting="True" autogeneratecolumns="False" datasourceid="SqlDataSource1">
<columns>
<asp:boundfield datafield="Username" headertext="Username" sortexpression="Username" />
<asp:boundfield datafield="Lastname" headertext="Lastname" sortexpression="Lastname" />
<asp:boundfield datafield="Firstname" headertext="Firstname" sortexpression="Firstname" />
</columns>
</asp:gridview>

<asp:sqldatasource id="SqlDataSource1" runat="server" connectionstring="<%$ ConnectionStrings:HOAConnectionString %>"
selectcommand="spAddressBookSelect" selectcommandtype="StoredProcedure">
<selectparameters>
<asp:sessionparameter defaultvalue="0" name="CommunityID" sessionfield="CommunityID" type="Int32" />
<asp:controlparameter controlid="Lastname" name="Lastname" propertyname="Text" type="String" />
<asp:controlparameter controlid="Profession" name="Profession" propertyname="Text" type="String" />
<asp:controlparameter controlid="Hobbies" name="Hobbies" propertyname="Text" type="String" />
</selectparameters>
</asp:sqldatasource>

</div>

</form>

sp signature:
ALTER PROCEDURE [dbo].[spAddressBookSelect]
@CommunityID int = 0,
@Lastname varchar(200) = NULL,
@Profession varchar(200) = NULL,
@Hobbies varchar(200) = NULL