如何使用C＃从xml提取信息
[英]How to extract information from xml using C#
问题描述
I have a xml document and i am using T-SQL to extract information and saving in tables. 
我有一个xml文档，我正在使用T-SQL提取信息并保存在表中。 But the problem is i extract multiple xml and have multiple dataset to save in database. 但是问题是我提取了多个xml，并有多个数据集要保存在数据库中。 I was wondering if i could extract data from these multiple xml files on my C# code using Linq and create a list and use Bulk insert rather then having to sent the xml to stored procedure each time. 我想知道是否可以使用Linq从C＃代码上的这些多个xml文件中提取数据并创建列表并使用大容量插入，而不必每次都将xml发送到存储过程。 My T-Sql code to extract the information: 我的T-Sql代码提取信息：
select x.i.value('ReportCell[1]/Value[1]', 'varchar(250)') as AccountName, x.i.value('ReportCell[1]/Attributes[1]/ReportCellAttribute[1]/Value[1]', 'varchar(250)') as AccountId, x.i.value('ReportCell[2]/Value[1]', 'varchar(250)') as Amnount
from @xml.nodes('//Cells') as x(i)
where x.i.value('../RowType[1]', 'varchar(250)') = 'Row' and x.i.value('ReportCell[1]/Attributes[1]', 'varchar(250)') is not null
The Xml file is : Xml文件是：
<?xml version="1.0" encoding="utf-16"?>
<Report xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<ReportID>BalanceSheet</ReportID>
<ReportName>Balance Sheet</ReportName>
<ReportType>BalanceSheet</ReportType>
<ReportTitles>
<string>Balance Sheet</string>
<string>Ulysses It 6</string>
<string>As at 31 October 2016</string>
</ReportTitles>
<ReportDate>18 January 2017</ReportDate>
<UpdatedDateUTC>2017-01-18T01:07:41.654Z</UpdatedDateUTC>
<Fields />
<Rows>
<ReportRow>
<RowType>Header</RowType>
<Cells>
<ReportCell>
<Value />
</ReportCell>
<ReportCell>
<Value>31 Oct 2016</Value>
</ReportCell>
<ReportCell>
<Value>31 Oct 2015</Value>
</ReportCell>
</Cells>
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title>Assets</Title>
<Rows />
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title>Bank</Title>
<Rows>
<ReportRow>
<RowType>Row</RowType>
<Cells>
<ReportCell>
<Value>Ulysses Six</Value>
<Attributes>
<ReportCellAttribute>
<Value>9e44f52a-90f4-4e9f-88f5-2dd9a33fc1c6</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>486000.00</Value>
<Attributes>
<ReportCellAttribute>
<Value>9e44f52a-90f4-4e9f-88f5-2dd9a33fc1c6</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
<Attributes>
<ReportCellAttribute>
<Value>9e44f52a-90f4-4e9f-88f5-2dd9a33fc1c6</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
</Cells>
</ReportRow>
<ReportRow>
<RowType>SummaryRow</RowType>
<Cells>
<ReportCell>
<Value>Total Bank</Value>
</ReportCell>
<ReportCell>
<Value>486000.00</Value>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
</ReportCell>
</Cells>
</ReportRow>
</Rows>
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title>Current Assets</Title>
<Rows>
<ReportRow>
<RowType>Row</RowType>
<Cells>
<ReportCell>
<Value>Accounts Receivable</Value>
<Attributes>
<ReportCellAttribute>
<Value>25e89097-8895-445c-8315-7efe50dc3be7</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>375000.00</Value>
<Attributes>
<ReportCellAttribute>
<Value>25e89097-8895-445c-8315-7efe50dc3be7</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
<Attributes>
<ReportCellAttribute>
<Value>25e89097-8895-445c-8315-7efe50dc3be7</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
</Cells>
</ReportRow>
<ReportRow>
<RowType>SummaryRow</RowType>
<Cells>
<ReportCell>
<Value>Total Current Assets</Value>
</ReportCell>
<ReportCell>
<Value>375000.00</Value>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
</ReportCell>
</Cells>
</ReportRow>
</Rows>
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title />
<Rows>
<ReportRow>
<RowType>SummaryRow</RowType>
<Cells>
<ReportCell>
<Value>Total Assets</Value>
</ReportCell>
<ReportCell>
<Value>861000.00</Value>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
</ReportCell>
</Cells>
</ReportRow>
</Rows>
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title>Liabilities</Title>
<Rows />
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title>Current Liabilities</Title>
<Rows>
<ReportRow>
<RowType>Row</RowType>
<Cells>
<ReportCell>
<Value>GST</Value>
<Attributes>
<ReportCellAttribute>
<Value>81ee7772-593d-48d3-851d-0bd68149d527</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>78273.51</Value>
<Attributes>
<ReportCellAttribute>
<Value>81ee7772-593d-48d3-851d-0bd68149d527</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
<Attributes>
<ReportCellAttribute>
<Value>81ee7772-593d-48d3-851d-0bd68149d527</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
</Cells>
</ReportRow>
<ReportRow>
<RowType>SummaryRow</RowType>
<Cells>
<ReportCell>
<Value>Total Current Liabilities</Value>
</ReportCell>
<ReportCell>
<Value>78273.51</Value>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
</ReportCell>
</Cells>
</ReportRow>
</Rows>
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title />
<Rows>
<ReportRow>
<RowType>SummaryRow</RowType>
<Cells>
<ReportCell>
<Value>Total Liabilities</Value>
</ReportCell>
<ReportCell>
<Value>78273.51</Value>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
</ReportCell>
</Cells>
</ReportRow>
</Rows>
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title />
<Rows>
<ReportRow>
<RowType>Row</RowType>
<Cells>
<ReportCell>
<Value>Net Assets</Value>
</ReportCell>
<ReportCell>
<Value>782726.49</Value>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
</ReportCell>
</Cells>
</ReportRow>
</Rows>
</ReportRow>
<ReportRow>
<RowType>Section</RowType>
<Title>Equity</Title>
<Rows>
<ReportRow>
<RowType>Row</RowType>
<Cells>
<ReportCell>
<Value>Current Year Earnings</Value>
<Attributes>
<ReportCellAttribute>
<Value>abababab-abab-abab-abab-abababababab</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>324545.13</Value>
<Attributes>
<ReportCellAttribute>
<Value>abababab-abab-abab-abab-abababababab</Value>
<Id>account</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value>7/1/2016</Value>
<Id>fromDate</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value>10/31/2016</Value>
<Id>toDate</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
<Attributes>
<ReportCellAttribute>
<Value>abababab-abab-abab-abab-abababababab</Value>
<Id>account</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value>7/1/2015</Value>
<Id>fromDate</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value>10/31/2015</Value>
<Id>toDate</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
</Cells>
</ReportRow>
<ReportRow>
<RowType>Row</RowType>
<Cells>
<ReportCell>
<Value>Retained Earnings</Value>
<Attributes>
<ReportCellAttribute>
<Value>86d10e93-151d-4b89-bb65-6df9bbacd2e3</Value>
<Id>account</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>458181.36</Value>
<Attributes>
<ReportCellAttribute>
<Value>86d10e93-151d-4b89-bb65-6df9bbacd2e3</Value>
<Id>account</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value />
<Id>fromDate</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value>10/31/2016</Value>
<Id>toDate</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
<Attributes>
<ReportCellAttribute>
<Value>86d10e93-151d-4b89-bb65-6df9bbacd2e3</Value>
<Id>account</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value />
<Id>fromDate</Id>
</ReportCellAttribute>
<ReportCellAttribute>
<Value>10/31/2015</Value>
<Id>toDate</Id>
</ReportCellAttribute>
</Attributes>
</ReportCell>
</Cells>
</ReportRow>
<ReportRow>
<RowType>SummaryRow</RowType>
<Cells>
<ReportCell>
<Value>Total Equity</Value>
</ReportCell>
<ReportCell>
<Value>782726.49</Value>
</ReportCell>
<ReportCell>
<Value>0.00</Value>
</ReportCell>
</Cells>
</ReportRow>
</Rows>
</ReportRow>
</Rows>
</Report>
3 个解决方案
解决方案1
1 2017-01-20 03:39:41
First, you should define POCO classes for your purpose, for instance: 首先，您应该根据自己的目的定义POCO类，例如：
public class Report {
// your poco definition here
public long ReportID {get;set;}
...
}
You can do so automatically with Visual Studio, all the required classes will be generate for you without writing a single line of code: 您可以使用Visual Studio自动执行此操作，无需编写任何代码即可为您生成所有必需的类：
XmlSerializer x = new XmlSerializer(typeof(Report));
using (FileStream fs = new FileStream(FilePath, FileMode.Open))
{
XmlReader reader = new XmlTextReader(fs);
Report r = (Report)x.Deserialize(reader);
}
// you can access whatever info you want, e.g.
// r.ReportID
解决方案2
0 2017-01-20 12:26:43
Try following : 尝试以下操作：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using System.IO;
using System.Data;
namespace ConsoleApplication42
{
class Program
{
const string FILENAME = @"c:\temp\test.xml";
static void Main(string[] args)
{
StreamReader reader = new StreamReader(FILENAME, Encoding.UTF8);
reader.ReadLine(); //ignore xml definition
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
XmlReader xReader = XmlReader.Create(reader, settings);
XElement doc = XElement.Load(xReader);
DataSet ds = new DataSet();
string[] columnHeaders = null;
foreach (XElement table in doc.Element("Rows").Elements("ReportRow"))
{
string type = (string)table.Descendants("RowType").FirstOrDefault();
switch (type)
{
case "Header" :
columnHeaders = table.Descendants("Value").Select(x => (string)x).ToArray();
break;
case "Section":
string name = (string)table.Element("Title");
DataTable dt = new DataTable(name);
for (int index = 0; index < columnHeaders.Length; index++)
{
if (index == 0)
{
dt.Columns.Add(columnHeaders[index], typeof(string));
}
else
{
dt.Columns.Add(columnHeaders[index], typeof(decimal));
}
}
ds.Tables.Add(dt);
foreach (XElement datarow in table.Descendants("ReportRow"))
{
DataRow newRow = dt.Rows.Add();
string[] values = datarow.Descendants("ReportCell").Elements("Value").Select(x => (string)x).ToArray();
for (int index = 0; index < values.Length; index++)
{
switch (index)
{
case 0 :
newRow[index] = values[index];
break;
default :
newRow[index] = decimal.Parse(values[index]);
break;
}
}
}
break;
}
}
}
}
}
解决方案3
0 已采纳 2017-01-23 01:54:12
Finally I did manage to extract what i need and it is shorter then above one. 最后，我确实设法提取了我需要的东西，它比上面的要短。 It requires a few steps. 它需要一些步骤。
var balancesheet = (from a in bs.Rows
where a.RowType == "Section"
&&
a.Rows.Count > 0
&&
(a.Rows.Where(x => x.RowType == "Row")) != null
select new
{
ReportCells = a.Rows
.SelectMany( x=>
{
return x.Cells.Where(s => s.Attributes != null);
}).ToList()
}
).ToList();
List<ReportCell> allCells = balancesheet.Where(z => z.ReportCells.Count > 0).SelectMany(x =>
{
return x.ReportCells;
}).ToList();
List<BalanceSheet> allBalanceSheetInfo = new List<BalanceSheet>();
for(int i = 0; i < allCells.Count; i += 3)
{
allBalanceSheetInfo.Add(new BalanceSheet()
{
AccountId = allCells.ElementAt(i).Attributes.FirstOrDefault() != null ? new Guid(allCells.ElementAt(i).Attributes.FirstOrDefault().Value) : Guid.Empty,
AccountName = allCells.ElementAt(i).Value,
Amount = Decimal.Parse(allCells.ElementAt(i + 1).Value)
});
}
Now I can insert the list to the database. 现在，我可以将列表插入数据库。 But am starting to question to do it in C# or just pass the XML to my T-SQL code. 但是我开始质疑用C＃来完成它，或者只是将XML传递给我的T-SQL代码。
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