📄 mdpronumericscalex.htm

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<h3><a name="mdpronumericscalex"></a>NumericScale 和 Precision 属性范例</h3>
<p>
该范例使用 <b>NumericScale</b> 和 <b>Precision</b> 属性来显示在 Pubs 数据库 Discounts 表中字段的数值范围和精度。</p>
<pre>Public Sub NumericScaleX()   Dim rstDiscounts As ADODB.Recordset
   Dim fldTemp As ADODB.Field
   Dim strCnn As String   ' 打开记录集。
   strCnn = "Provider=sqloledb;" &amp; _
      "Data Source=srv;Initial Catalog=pubs;User Id=sa;Password=; "
   Set rstDiscounts = New ADODB.Recordset
   rstDiscounts.Open "discounts", strCnn, , , adCmdTable   ' 显示数字和小整数字段的数值范围和精度。
   For Each fldTemp In rstDiscounts.Fields
      If fldTemp.Type = adNumeric _
         Or fldTemp.Type = adSmallInt Then
         MsgBox "Field: " &amp; fldTemp.Name &amp; vbCr &amp; _
            "Numeric scale: " &amp; _
               fldTemp.<span class=cfe><b>NumericScale</b></span> &amp; vbCr &amp; _
            "Precision: " &amp; fldTemp.<span class=cfe><b>Precision</b></span>
      End If
   Next fldTemp   rstDiscounts.CloseEnd Sub</pre>
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