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📁 ADO使用手册,非常详细

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<h3><a name="mdprodescriptionx"></a>Description、NativeError、Number、Source 和 SQLState 属性范例</h3>
<p>
该范例触发并捕获错误，同时显示产生的 <b>Error</b> 对象的 <b>Description</b>、<b>HelpContext</b>、<b>HelpFile</b>、<b>NativeError</b>、<b>Number</b>、<b>Source</b> 和 <b>SQLState</b> 属性。</p>
<pre>Public Sub DescriptionX()   Dim cnn1 As ADODB.Connection
   Dim errLoop As ADODB.Error
   Dim strError As String   On Error GoTo ErrorHandler
   
   ' 有意触发错误。
   Set cnn1 = New ADODB.Connection
   cnn1.Open "nothing"
   
   Exit SubErrorHandler:   ' 枚举错误集合并显示每个 Error 对象的属性。
   For Each errLoop In cnn1.Errors
      strError = "Error #" &amp; errLoop.Number &amp; vbCr &amp; _
         "   " &amp; errLoop.Description &amp; vbCr &amp; _
         "   (Source: " &amp; errLoop.Source &amp; ")" &amp; vbCr &amp; _
         "   (SQL State: " &amp; errLoop.SQLState &amp; ")" &amp; vbCr &amp; _
         "   (NativeError: " &amp; errLoop.NativeError &amp; ")" &amp; vbCr
      If errLoop.HelpFile = "" Then
         strError = strError &amp; _
            "   No Help file available" &amp; _
            vbCr &amp; vbCr
      Else
         strError = strError &amp; _
            "   (HelpFile: " &amp; errLoop.HelpFile &amp; ")" &amp; vbCr &amp; _
            "   (HelpContext: " &amp; errLoop.HelpContext &amp; ")" &amp; _
            vbCr &amp; vbCr
      End If
            Debug.Print strError
   Next   Resume NextEnd Sub</pre>
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