將數據集轉換為嵌套的 xml???幫助我

Question

我有 1 個數據集，名為 Invoices，有 2 個數據表，數據取自 sql server 2008。忽略數據庫中的數據，我專注於導出到 xml 的數據集。 數據表1，名為Invoice，包括OrderID、CustomerID、CustomerName、CustomerPhone。 數據表 2，名為 Products，包括 ProductID、OrderID、ProductName、Price、Quantity、Amount。
我的問題是，我想得到這個輸出，

<Invoices>
    <OrderID>1</OrderID>
    <Invoice>
        <CustomerID>1</CustomerID>
        <CustomerName>A</CustomerName>
        <CustomerPhone>123</CustomerPhone>
        <Products>
            <Product>
                <ProductID>1</ProductID>
                <ProductName>C</ProductName>
                <Price>10</Price>
                <Quantity>2</Quantity>
                <Amount>20</Amount>
            </Product>
        </Products>
        <TotalAmount>20</TotalAmount> --TotalAmount = sum(amount of products)
    </Invoice>
    <OrderID>2</OrderID>
    <Invoice>
        <CustomerID>3</CustomerID>
        <CustomerName>D</CustomerName>
        <CustomerPhone>1789</CustomerPhone>
        <Products>
            <Product>
                <ProductID>5</ProductID>
                <ProductName>V</ProductName>
                <Price>30</Price>
                <Quantity>3</Quantity>
                <Amount>90</Amount>
            </Product>
            <Product>
                <ProductID>9</ProductID>
                <ProductName>Z</ProductName>
                <Price>5</Price>
                <Quantity>4</Quantity>
                <Amount>20</Amount>
            </Product>
        </Products>
        <TotalAmount>110</TotalAmount> --TotalAmount = sum(amount of products)
    </Invoice>      
</Invoices>

但我得到這個輸出：

<Invoices>
    <OrderID>1</OrderID>
    <Invoice>
        <CustomerID>1</CustomerID>
        <CustomerName>A</CustomerName>
        <CustomerPhone>123</CustomerPhone>      
        <TotalAmount>20</TotalAmount> --TotalAmount = sum(amount of products)
        <Products>
            <Product>
                <ProductID>1</ProductID>
                <ProductName>C</ProductName>
                <Price>10</Price>
                <Quantity>2</Quantity>
                <Amount>20</Amount>
            </Product>
        </Products>
    </Invoice>
    <OrderID>2</OrderID>
    <Invoice>
        <CustomerID>3</CustomerID>
        <CustomerName>D</CustomerName>
        <CustomerPhone>1789</CustomerPhone>     
        <TotalAmount>110</TotalAmount> --TotalAmount = sum(amount of products)
        <Products>
            <Product>
                <ProductID>5</ProductID>
                <ProductName>V</ProductName>
                <Price>30</Price>
                <Quantity>3</Quantity>
                <Amount>90</Amount>
            </Product>
            <Product>
                <ProductID>9</ProductID>
                <ProductName>Z</ProductName>
                <Price>5</Price>
                <Quantity>4</Quantity>
                <Amount>20</Amount>
            </Product>
        </Products>
    </Invoice>      
</Invoices>

導出xml的代碼是：

public DataSet LoadInvoices()
        {
            DataSet ds = new DataSet("Invoices");

            DataTable dt1 = LoadInvoice();
            dt1.TableName = "Invoice";


            DataTable dt3 = LoadProduct();
            dt3.TableName = "Product";

            ds.Tables.Add(dt1);
            ds.Tables.Add(dt3);


            DataColumn colDT3 = dt3.Columns[2];
            DataColumn colDT21 = dt1.Columns[0];
            DataRelation rel2 = new DataRelation("PRODUCT"
                      , colDT21, colDT3);
            rel2.Nested = true;
            ds.Relations.Add(rel2);

            return ds;
        }

  public string xmlConvert(DataSet ds)
        {
            string sXML = "";

            sXML = ds.GetXml();

            return sXML;
        }

因此，我必須調整代碼以根據需要導出xml？？？

Answer 1

您有無效的 xml，因為它包含和符號。 應該是 & 這個問題可能可以在數據集查詢中解決，但沒有足夠的關於用於創建 xml 的方法的信息。 您始終可以編輯 xml 代碼使用 xml linq 過濾輸出：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        {
            XDocument doc = XDocument.Load(FILENAME);

            List<XElement> removeItems = doc.Descendants("catname").Where(x => (string)x != "Hotel").ToList();
            removeItems.Remove();
        }
    }
}