I am using a webgrid in a usercontrol that shows our network status in descending order for the past several months. I would like it to show only the data from the last 90 days. Please help and many thanks! My .cs code is shown below:

public partial class UserControls_Network_StatusLog : Port.Base.PortUserControl
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void ObjectDataSource1_Selecting(object sender, ObjectDataSourceSelectingEventArgs e)
    {
        e.Arguments.SortExpression = "Date Occurred DESC";
    }
}