大家好我正在尝试使用SQL Server数据库中的值创建和保存XML。
我的代码基本上创建了一个XML字符串，其中填充了我从多个SQL查询中获取的变量（我需要从许多表中获取数据以完成XML）
我正在使用SqlDataReader来获取变量的值。
由于我的XML有点冗长和复杂，我决定根据查询从几个子字符串中放入最终的XML字符串，基本上就像：
finalxml string = startxml + headerxml + buyerxml + sellerxml + linesxml + summaryxml
我一切都好，直到我到达某一点，结果SQL查询返回了多行。
这是我的代码隐藏：
string orderdetails = "select ProductId, Quantity from [Order] inner join OrderItem on [Order].Id=OrderItem.OrderId where OrderId='" + orderID + "'";
SqlCommand com3 = new SqlCommand(orderdetails, dbConn);
dbConn.Open();
using (SqlDataReader orderitem = com3.ExecuteReader())
while (orderitem.Read())
{
string orderxml = "<Order>" + "<OrderItem>" + orderitem.GetInt32(0).ToString() + "</OrderItem>" + "<OrderItem>" + orderitem.GetInt32(1).ToString() + "</OrderItem>" + "</Order>";
Label20.Text = orderxml;
string termid = orderitem.GetInt32(0).ToString();
string termmenny = orderitem.GetInt32(1).ToString();
}
dbConn.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
string headerxml = "<Order-Header>" +
"<DocumentType> számla </DocumentType>" +
"<OrderNumber>" + rendSz + "</OrderNumber>" +
"<OrderDate>"+ datum +"</OrderDate>" +
"<ExpectedDeliverydate> " + szallido + "</ExpectedDeliverydate>"+
"<PaymentMethod>"+ fizmod +"</PaymentMethod>"+
"<Remarks><![CDATA[" + txtFirstName.Text + "]]></Remarks>"+
"<Note><![CDATA[" + txtLastName + "]]></Note>" +
"<PreviousOrderNumber><![CDATA[]]></PreviousOrderNumber>" +
"</Order-Header>";
string vevoxml = "<Buyer>" +
"<ILN>435</ILN>" +
"<Name>"+ vezeteknev +" "+ keresztnev +"</Name>" +
"<City>" + vevovaros + "</City>" +
"<ZIP>" + irszam + "</ZIP>" +
"<Address>" + vevocim1 + vevocim2 + "</Address>" +
"<E-mail>" + vevoemail + "</E-mail>" +
"<Telefon>" + vevotel + "</Telefon>" +
"<Contact>" + "nincs" + "</Contact>" +
"<DeliveryName>" + szallkeresztnev +" "+ szallvezeteknev + "</DeliveryName>" +
"<DeliveryCity>" + szallcimvaros + "</DeliveryCity>" +
"<DeliveryZIP>" + szallcimirszam + "</DeliveryZIP>" +
"<DeliveryAddress>" + szallvevocim1 + szallvevocim2 + "</DeliveryAddress>" +
"</Buyer>";
string eladoxml = "<Seller>" +
"<ILN />" +
"<Name>E-Szoftver Kft.</Name>" +
"<City>Budapest</City>" +
"<ZIP>1195</ZIP>" +
"<Address>Ady Endre út 97-99. F/04.</Address>" +
"<E-mail>laszlo@marsalsoft.hu</E-mail>" +
"</Seller>";
string linexml = "<Line>" +
"<Line-Item>" +
"<LineNumber>1</LineNumber>" +
"<EAN />" +
"<SupplierItemCode />" +
"<CustomsCode>5829</CustomsCode>" +
"<ItemDescription><![CDATA[E-Számla szoftver frissítési és jogkövetési díj 1 évre]]></ItemDescription>" +
"<ItemNote><![CDATA[]]></ItemNote>" +
"<VATType>27</VATType>" +
"<PackageType>CU</PackageType>" +
"<OrderedQuantity>1</OrderedQuantity>" +
"<UnitOfMeasure>év</UnitOfMeasure>" +
"<OrderedUnitNetPrice>13200</OrderedUnitNetPrice>" +
"</Line-Item>" +
"</Line>";
string strMyXml = "<?xml version=\"1.0\" encoding=\"windows-1250\"?> " +
"<Document-Order>"+
headerxml +
"<Order-Parties>" +
vevoxml +
eladoxml +
"</Order-Parties>"+
"<Order-Lines>" +
linexml +
"</Order-Lines>" +
"<Order-Summary>" +
"<TotalLines>1</TotalLines>" +
"<TotalOrderedAmount>1</TotalOrderedAmount>" +
"<TotalNetPrice>13200</TotalNetPrice>" +
"<TotalVat>3564</TotalVat>" +
"<TotalGross>16764</TotalGross>" +
"</Order-Summary>" +
"</Document-Order>";
XmlDocument xDoc = new XmlDocument();
xDoc.LoadXml(strMyXml);
xDoc.Save(Server.MapPath("//orders//szamla.xml"));
}
现在lineXML部分是我的问题，它描述了订单中包含的产品。每个xml描述1个订单，但是1个订单可以包含3个产品，在这种情况下，我需要为每个产品创建一个包含少量元素的行：数量，数量，净价，总价。
是否可以将SqlDataReader和变量添加到字符串中，还是需要使用其他方式，例如从查询结果生成的数据集？
我发现了很多关于从数据集生成xml并使用字符串生成xml的信息，但是它们都没有包含有关此特定情况的信息，从SQL Server生成XML，您需要使用多个查询。
幸运的是我的代码是模块化的，所以如果只能用数据集完成，我不需要触摸xml的其他部分。任何帮助将不胜感激。
答案 0 :(得分：0)
我同时找到了解决方案，对于我的xml的orderdetails部分，我使用了数据集，而不是将其写入文件，我将其转换为字符串，并将其添加到主xmlstring：
string orderdetails = "select Rank() OVER (Order by ProductID) as LineNumber, null as EAN, null as CustomsCode, ProductId as SupplierItemCode, '![CDATA['+Product.Name+']' as ItemDescription, '![CDATA['+Product.ShortDescription+']' as ItemNote, null as VATType, 'CU' as PackageType, Quantity as OrderQuantity, 'darab' as UnitOfMeasure, UnitPriceExclTax as OrderedUnitNetPrice from [Order] inner join OrderItem on [Order].Id=OrderItem.OrderId Inner join Product on OrderItem.ProductId=Product.Id where OrderId='" + orderID + "'";
SqlCommand com3 = new SqlCommand(orderdetails, dbConn);
dbConn.Open();
SqlDataAdapter adapter;
DataSet ds = new DataSet("Line");
try
{
adapter = new SqlDataAdapter(orderdetails, dbConn);
adapter.Fill(ds, "Line-Item");
dbConn.Close();
StringWriter sw = new StringWriter();
string result = sw.ToString();
ds.WriteXml(sw);
ds.WriteXml(@"E:\mypath\Product.xml"); //saved to file as well just to check the correct scheme
teststring = sw.ToString();
prodlabel.Text = teststring;
}
catch (Exception ex)
{
Label20.Text = ex.ToString();
}