hyperLinkField value to pass to textbox on different page

Question

I have the below hyperLinkField that I want to pass a value into a textbox onto a different page. 

"PropertySearch_GridView" runat="server" AutoGenerateColumns="false" Height ="1px" Width ="300px" OnRowDataBound="GridView1_RowDataBound" OnPageIndexChanging="GridView1_PageIndexChanging" OnSorting="GridView1_Sorting" AllowPaging="true" AllowSorting="True" >


"Horizon_Property_Id" DataNavigateUrlFields="Horizon_Property_Id" HeaderText="Horizon_Property_Id"
DataNavigateUrlFormatString="~/Search_Property.aspx?PropertySearch_HorizonPropID={0}" SortExpression="Horizon_Property_Id"
/>

<%--"Horizon_Property_Id" ReadOnly="True" HeaderText="Horizon_Property_Id" SortExpression="Horizon_Property_Id" />--%>
"Horizon_Site_Id" ReadOnly="True" HeaderText="Horizon_Site_Id" SortExpression="Horizon_Site_Id" />
"Zone" HeaderText="Zone" ReadOnly="True" SortExpression="Zone" />
"Property_Name" HeaderText="Property_Name" ReadOnly="True" SortExpression="Property_Name" />
"Site_Name" HeaderText="Site_Name" ReadOnly="True" SortExpression="Site_Name" />
"Street" HeaderText="Street" ReadOnly="True" SortExpression="Street" />
"Town" HeaderText="Town" ReadOnly="True" SortExpression="Town" />
"PostCode" HeaderText="PostCode" ReadOnly="True" SortExpression="PostCode" />

when I run the app and press the hyperlink, the CreateSurvey page opens, but the Create_Prop_ID textbox does not populate.

could someone help please.

Regards

Rob