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這是我的界面,它是實現類文件。在實現服務功能的同時,有機會獲得3個例外。如何在WCF中實現自定義故障契約?
我需要處理這些使用自定義故障合同。你能否告訴我如何在一個錯誤合同下實施3個例外。
接口:
功能GetEntities()作爲字符串
類文件,使用該服務的接口:
Public Function GetEntities() As String
Dim result As String = Nothing
Dim ds As New DataSet
'Result string from Mapping file.
Dim resultFrmMap As String = ReadXML(entity) //Here need to handle exception.
Using con As New SqlConnection(System.Configuration.ConfigurationManager.AppSettings("MainDBConnectionString").ToString())
con.Open()
Dim cmd As New SqlCommand(resultFrmMap, con)
Using Da As New SqlDataAdapter(cmd)
ds.Clear()
Da.TableMappings.Add("Table", "Data")
Da.Fill(ds)
cmd.Dispose()
End Using
End Using //Here need to handle exception.
result = GetXML(ds) //Here need to handle exception.
Return result
End Function
問候, JN