如何将 XML 读入 DataTable? [英] How to read XML into a DataTable?
问题描述
我在内存中的 string
中有一些 XML,就像这样:
I have some XML in a string
in memory exactly like this:
<symbols>
<symbol>EURCHF</symbol>
<symbol>EURGBP</symbol>
<symbol>EURJPY</symbol>
<symbol>EURUSD</symbol>
</symbols>
我想将其读入 DataTable
.我是这样做的:
I want to read this into a DataTable
. I am doing it like this:
DataTable dt = new DataTable();
dt.TableName = "symbols";
dt.Columns.Add("symbol");
if (!String.IsNullOrEmpty(symbols))
{
dt.ReadXml(new StringReader(symbols));
}
然而,当我检查行数时,DataTable
最终有零行.我做错了什么?
However when I check the number of rows, the DataTable
ends up having zero rows. What am I doing wrong?
推荐答案
从这里:http://www.dreamincode.net/code/snippet3186.htm
// <summary>
/// method for reading an XML file into a DataTable
/// </summary>
/// <param name="file">name (and path) of the XML file</param>
/// <returns></returns>
public DataTable ReadXML(string file)
{
//create the DataTable that will hold the data
DataTable table = new DataTable("XmlData");
try
{
//open the file using a Stream
using(Stream stream = new FileStream(file, FileMode.Open, FileAccess.Read))
{
//create the table with the appropriate column names
table.Columns.Add("Name", typeof(string));
table.Columns.Add("Power", typeof(int));
table.Columns.Add("Location", typeof(string));
//use ReadXml to read the XML stream
table.ReadXml(stream);
//return the results
return table;
}
}
catch (Exception ex)
{
return table;
}
}
您可能想看看 DataTable.ReadXml 方法.
You might want to take a look at DataTable.ReadXml method.
如果内存中有 xml 对象,则可以直接使用 ReadXml 方法.DataTable.ReadXml(MemoryStream Object);
If you have xml object in memory you can use the ReadXml method directly. DataTable.ReadXml(MemoryStream Object);
编辑 2:我做了导出.需要以下 XML 架构:
EDIT 2: I did the export. The following XML Schema is required:
<?xml version="1.0" standalone="yes"?>
<DocumentElement>
<symbols>
<symbol>EURCHF</symbol>
</symbols>
<symbols>
<symbol>EURGBP</symbol>
</symbols>
<symbols>
<symbol>EURJPY</symbol>
</symbols>
</DocumentElement>
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