在.Net緊湊框架中的性能問題

Question

我不明白爲什麼發送參數插入功能在.net緊湊框架中工作緩慢。

Forexample2秒

cn = New SqlCeConnection(strstring) 
    cmd = New SqlCeCommand 
    Dim rs As SqlCeResultSet 
    cmd.Connection = cn 
    cmd.CommandType = CommandType.TableDirect 
    cn.Open() 
    Dim rec As SqlCeUpdatableRecord 
    Dim DB As New Db 
    Dim a As Integer = 1 
    Dim b As Integer = 2 
    For i As Integer = 0 To 1000 
     If i = 0 Then 
      cmd.CommandText = "A" 
      rs = cmd.ExecuteResultSet(ResultSetOptions.Updatable) 
      rec = rs.CreateRecord() 
     End If 
     Try 
      rec.SetValue(0, a) 
      rec.SetValue(1, b) 
      rs.Insert(rec 
     Catch ex As Exception 

     End Try 


    Next 

但是，當我發送參數，a和b，在插入子，該代碼13 seconds.What確實性能降低內完成內以下代碼插入？

cn = New SqlCeConnection(strstring) 
    cmd = New SqlCeCommand 
    Dim rs As SqlCeResultSet 
    cmd.Connection = cn 
    cmd.CommandType = CommandType.TableDirect 
    cn.Open() 
    Dim rec As SqlCeUpdatableRecord 

    For i As Integer = 0 To 1000 
     If i = 0 Then 
      cmd.CommandText = "A" 
      cmd.CommandType = CommandType.TableDirect 
      rs = cmd.ExecuteResultSet(ResultSetOptions.Updatable) 
      rec = rs.CreateRecord() 
     End If 
     Try 
      DB.Insert(1, 2, rs, rec) 
     Catch ex As Exception 

     End Try 


    Next 

這是DB類插入子

公共類Db的

Public Shared Sub Insert(ByVal a As Integer, ByVal b As Integer, ByRef rs As SqlCeResultSet, ByRef rec As SqlCeUpdatableRecord) 
    Try 
     rec.SetValue(0, a) 
     rec.SetValue(1, If(b = String.Empty, DirectCast(DBNull.Value, Object), b)) 
     rs.Insert(rec) 
    Catch ex As Exception 

    End Try 


End Sub 

末級

Answer 1

我會仔細檢查安裝在設備上。混淆起來很容易。谷歌的新產品是SQL Server Compact。

由於microsoft決定更改移動/ CE空間中的所有內容的名稱，因此無法搜索幫助。它是Windows CE，Pocket PC，Windows Mobile還是Phone 7？它是SQL CE還是Sql Server Compact「Arrgh」！

也許這些鏈接將有助於下一個傢伙。 MSDN Blog或這個Technet。