I am using dataadapter.Fill() into dataset. But dataset returning tables rows count zero (0).

When I ran same sp in sql mgmt. It is returning two tables data.

        If attributeId = 1 Then
            spString = "USP_group_1"
        ElseIf attributeId = 2 Then
            spString = "USP_group_2"
        ElseIf attributeId = 3 Then
            spString = "USP_group_3"
        End If

    sqlcmd_q.CommandTimeout = 120
    sqlcmd_q.Connection = sqlCnn
    sqlcmd_q.CommandText = spString
    sqlcmd_q.CommandType = CommandType.StoredProcedure
    sqlcmd_q.Parameters.AddWithValue("@client_id", clientId)

    Try
        sqlCnn.Open()

 Dim daGrid As New SqlDataAdapter(sqlcmd_q)
 daGrid.Fill(dsGrid)
 daGrid.Dispose()
 Return dsGrid

I don't understand why this happening?