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No luck in creating dynamic Linq WhereParameters in OnSelecting event

Ken Fayal
Ken Fayal asked
Last Modified: 2013-12-17

I am trying to create a dynamic where parameter for my linq data source which is used by my GridView control.  My OnSelecting code is as follows:

When I step through I see that my variable _policyID has a value, but I receive an error when the page loads:

No property or field 'pid' exists in type 'M_Payment'

I've attached the code below

Am I missing something?  Is this even possible to do?
// Here is my code 
protected void LinqPaymentsDS_Selecting(object sender, LinqDataSourceSelectEventArgs e)
    Parameter whereParam = new Parameter();
    whereParam.Name = "pid";
    whereParam.DefaultValue = _policyID.ToString();
    whereParam.Type = TypeCode.Int32;
    LinqPaymentsDS.Where = "LOC_Policy_Detail_ID == @pid";
// Here is the declared portion on my .ASPX page
<asp:LinqDataSource ID="LinqPaymentsDS" runat="server" OnSelecting="LinqPaymentsDS_Selecting" ContextTypeName="ABC_SystemTracking_LINQ.ABC_SystemTracking_DataClassesDataContext" EnableUpdate="true" EnableUpdate="true" TableName="M_Payments" OrderBy="Coverage_Date descending">

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