在 .NET 中读取 XML 格式为相反十进制字符 (period/comma) 的数字
Reading XML with numbers formatted with opposite decimal character (period/comma) in .NET
我的 VB.NET 应用正在将第 3 方网站生成的 XML 文件导入 SQL 服务器 table。该网站(和我的电脑)使用句点字符表示小数点(例如 42.015),一切正常。但一位欧洲用户报告说,导入的数字被乘以 1000 或 10000 倍。事实证明,他的计算机正在寻找逗号小数(例如 42,015),当它看到 XML 输入时,它会将其转换为42015.00.
我正在使用 DataSet.ReadXML 和 SqlBulkCopy.WriteToServer,但我不确定我可以在哪里介入来告诉程序期望周期小数。我的代码如下:
Dim ds As New DataSet
Try
ds.ReadXml(tempfile, 0)
Catch ex As XmlException
Log($"Error reading XML: {ex.Message} with {ex.Data}")
Exit Sub
End Try
Dim columnMap As New Dictionary(Of String, String) From {
{"LOTID", "InventoryID"},
{"ITEMTYPE", "ItemType"},
{"ITEMID", "ItemNum"},
{"COLOR", "ColorID"},
{"CONDITION", "Cond"},
{"REMARKS", "LocationName"},
{"QTY", "Qty"},
{"DESCRIPTION", "Description"},
{"SUBCONDITION", "Completeness"},
{"SALE", "Discount"},
{"STOCKROOM", "Stockroom"},
{"BULK", "Bulk"},
{"BUYERUSERNAME", "Reserve"},
{"PRICE", "Price"}
}
Using conn = New SqlConnection(GetDBConnectionString)
Using sbc As New SqlBulkCopy(conn)
conn.Open()
DoSql(conn, "TRUNCATE TABLE dbo.Online_Inventories;")
For Each column As DataColumn In ds.Tables("ITEM").Columns
If columnMap.ContainsKey(column.ColumnName) Then
sbc.ColumnMappings.Add(column.ColumnName, columnMap(column.ColumnName))
End If
Next
sbc.DestinationTableName = "Online_Inventories"
sbc.WriteToServer(ds.Tables("ITEM"))
conn.Close()
End Using
End Using
导入的 XML 如下所示:
<ITEM>
<LOTID>217770136</LOTID>
<DATEADDED>9/20/2020 3:02:00 PM</DATEADDED>
<CATEGORY>771</CATEGORY>
<COLOR>0</COLOR>
<PRICE>11.7563</PRICE>
<QTY>1</QTY>
<BULK>1</BULK>
<IMAGE></IMAGE>
<DESCRIPTION></DESCRIPTION>
<CONDITION>U</CONDITION>
<SUBCONDITION>I</SUBCONDITION>
<ITEMTYPE>S</ITEMTYPE>
<ITEMID>41110-1</ITEMID>
<SALE>0</SALE>
<REMARKS></REMARKS>
<STOCKROOM>Y</STOCKROOM>
<MYWEIGHT>0</MYWEIGHT>
<ITEMWEIGHT>0</ITEMWEIGHT>
<DATELASTSOLD></DATELASTSOLD>
<BASECURRENCYCODE>USD</BASECURRENCYCODE>
</ITEM>
所以在这个例子中,在第三行(ds.ReadXml)之后,ds("Price")="11.7563",一个字符串
在 sbc.WriteToServer 行之后,dbo.Online_Inventories.Price 的值为 117563.0(在这种情况下实际上是一个错误,因为 Price 是一个 NUMERIC(9,4))
当用户的本国文化使用逗号作为小数时,我如何让 .net 将句点读取为小数?谢谢!
默认线程 CultureInfo 基于 运行 机器的设置文化。默认字符串解析将使用默认的 CultureInfo。您可以在执行您发布的代码时更改线程 CultureInfo 以使用 InvariantCulture(基本上 en-US)。 InvariantCulture 使用句点 (.) 作为小数点。
Dim currentCulture As CultureInfo = Threading.Thread.CurrentThread.CurrentCulture
Threading.Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture
' ***
' insert your code here
' ***
Threading.Thread.CurrentThread.CurrentCulture = currentCulture
我的 VB.NET 应用正在将第 3 方网站生成的 XML 文件导入 SQL 服务器 table。该网站(和我的电脑)使用句点字符表示小数点(例如 42.015),一切正常。但一位欧洲用户报告说,导入的数字被乘以 1000 或 10000 倍。事实证明,他的计算机正在寻找逗号小数(例如 42,015),当它看到 XML 输入时,它会将其转换为42015.00.
我正在使用 DataSet.ReadXML 和 SqlBulkCopy.WriteToServer,但我不确定我可以在哪里介入来告诉程序期望周期小数。我的代码如下:
Dim ds As New DataSet
Try
ds.ReadXml(tempfile, 0)
Catch ex As XmlException
Log($"Error reading XML: {ex.Message} with {ex.Data}")
Exit Sub
End Try
Dim columnMap As New Dictionary(Of String, String) From {
{"LOTID", "InventoryID"},
{"ITEMTYPE", "ItemType"},
{"ITEMID", "ItemNum"},
{"COLOR", "ColorID"},
{"CONDITION", "Cond"},
{"REMARKS", "LocationName"},
{"QTY", "Qty"},
{"DESCRIPTION", "Description"},
{"SUBCONDITION", "Completeness"},
{"SALE", "Discount"},
{"STOCKROOM", "Stockroom"},
{"BULK", "Bulk"},
{"BUYERUSERNAME", "Reserve"},
{"PRICE", "Price"}
}
Using conn = New SqlConnection(GetDBConnectionString)
Using sbc As New SqlBulkCopy(conn)
conn.Open()
DoSql(conn, "TRUNCATE TABLE dbo.Online_Inventories;")
For Each column As DataColumn In ds.Tables("ITEM").Columns
If columnMap.ContainsKey(column.ColumnName) Then
sbc.ColumnMappings.Add(column.ColumnName, columnMap(column.ColumnName))
End If
Next
sbc.DestinationTableName = "Online_Inventories"
sbc.WriteToServer(ds.Tables("ITEM"))
conn.Close()
End Using
End Using
导入的 XML 如下所示:
<ITEM>
<LOTID>217770136</LOTID>
<DATEADDED>9/20/2020 3:02:00 PM</DATEADDED>
<CATEGORY>771</CATEGORY>
<COLOR>0</COLOR>
<PRICE>11.7563</PRICE>
<QTY>1</QTY>
<BULK>1</BULK>
<IMAGE></IMAGE>
<DESCRIPTION></DESCRIPTION>
<CONDITION>U</CONDITION>
<SUBCONDITION>I</SUBCONDITION>
<ITEMTYPE>S</ITEMTYPE>
<ITEMID>41110-1</ITEMID>
<SALE>0</SALE>
<REMARKS></REMARKS>
<STOCKROOM>Y</STOCKROOM>
<MYWEIGHT>0</MYWEIGHT>
<ITEMWEIGHT>0</ITEMWEIGHT>
<DATELASTSOLD></DATELASTSOLD>
<BASECURRENCYCODE>USD</BASECURRENCYCODE>
</ITEM>
所以在这个例子中,在第三行(ds.ReadXml)之后,ds("Price")="11.7563",一个字符串 在 sbc.WriteToServer 行之后,dbo.Online_Inventories.Price 的值为 117563.0(在这种情况下实际上是一个错误,因为 Price 是一个 NUMERIC(9,4))
当用户的本国文化使用逗号作为小数时,我如何让 .net 将句点读取为小数?谢谢!
默认线程 CultureInfo 基于 运行 机器的设置文化。默认字符串解析将使用默认的 CultureInfo。您可以在执行您发布的代码时更改线程 CultureInfo 以使用 InvariantCulture(基本上 en-US)。 InvariantCulture 使用句点 (.) 作为小数点。
Dim currentCulture As CultureInfo = Threading.Thread.CurrentThread.CurrentCulture
Threading.Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture
' ***
' insert your code here
' ***
Threading.Thread.CurrentThread.CurrentCulture = currentCulture