Creating ASPGrid at run time

I have a web form that display the data grid. The data grid is bound to a stored procedure based on the criteria being passed.
I am no problem when i invoke the method that binds the data grid for the first time.(ie when i pass the parameter)

Now when i pass a different value to the parameter, i need the grid to show results that where passed as parameter on FIRST EXECUTION.

I can easily have 2 data grid to accomplish this. But if i am not sure how many times the paramter would be changed , how do i accomplish showing the datagrid with results based on the criteria being passed.
Attached are my methods i am using.

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Try
 
              'Loop through the search request and show search results for each request
            Dim aList, x
            If Len(Request.QueryString("RefID")) > 0 Then
                aList = Split(Request.QueryString("RefID"), "*~*")
                For x = 0 To UBound(aList)
                    BindGrid(CInt(aList(x)))
                Next
            End If
 
 
        Catch ex As Exception
 
        End Try
    End Sub
 
Sub BindGrid(ByVal iSearchID As Integer)
        Try
 
            Dim objSearchResults As New CommuterDALTableAdapters.objCommuterSearchRequestReportsTableAdapter
            dgGrid.DataSource = objSearchResults.FetchSearchMatches(iSearchID)
            dgGrid.DataBind()
 
        Catch ex As Exception
 
          
        End Try
    End Sub

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