Attributes 和 Name 属性范例

该范例显示 Connection、Field 和 Property 对象的 Attributes 属性值。它使用 Name 属性显示每个 Field 和 Property 对象的名称。

Public Sub AttributesX

   Dim cnn1 As ADODB.Connection
   Dim rstEmployees As ADODB.Recordset
   Dim fldLoop As ADODB.Field
   Dim proLoop As ADODB.Property
   Dim strCnn As String
   
   ' 打开连接和记录集。
   strCnn = "Provider=sqloledb;" & _
      "Data Source=srv;Initial Catalog=pubs;User Id=sa;Password=; "
   Set cnn1 = New ADODB.Connection
   cnn1.Open strCnn
   Set rstEmployees = New ADODB.Recordset
   rstEmployees.Open "employee", cnn1, , , adCmdTable
   
   ' 显示连接的属性。
   Debug.Print "Connection attributes = " & _
      cnn1.Attributes

   ' 显示雇员表字段的属性。
   Debug.Print "Field attributes:"
   For Each fldLoop In rstEmployees.Fields
      Debug.Print "   " & fldLoop.Name & " = " & _
         fldLoop.Attributes
   Next fldLoop

   ' 显示是 NULLABLE 的雇员表的字段。
   Debug.Print "NULLABLE Fields:"
   For Each fldLoop In rstEmployees.Fields
      If CBool(fldLoop.Attributes And adFldIsNullable) Then
         Debug.Print "   " & fldLoop.Name
      End If
   Next fldLoop

   ' 显示雇员表属性的属性。
   Debug.Print "Property attributes:"
   For Each proLoop In rstEmployees.Properties
      Debug.Print "   " & proLoop.Name & " = " & _
         proLoop.Attributes
   Next proLoop

   rstEmployees.Close
   cnn1.Close

End Sub