I am trying to do a simple web application in ASP.NET Framework 4.5.2 (in Visual Studio 2013). I want to read contents from an XML file, validate the content to a schema, show it on default.aspx page, and maybe later add buttons to edit these contents and re-write the changes to the XML-file. The problems I have is that I can't even figure out how to display the contents in a listView (which according to my searching is a suitable choice of control).
In the Default.aspx.cs, in the Page_Load method (is this the right place for it?), I have done the following:
XDocument document = XDocument.Load(AppDomain.CurrentDomain.BaseDirectory + "/App_Data/orders.xml");
XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add("", XmlReader.Create(AppDomain.CurrentDomain.BaseDirectory + "/App_Data/orderschema.xsd"));
bool errors = false;
document.Validate(schemas, (o, err) =>
{
System.Diagnostics.Debug.WriteLine("Validation error: {0}", err.Message);
errors = true;
});
if (!errors)
{
System.Diagnostics.Debug.WriteLine("XML document successfully validated.");
}
else
{
System.Diagnostics.Debug.WriteLine("XML document does not validate.");
}
This seems to work fine. The loaded document seems to be validated successfully and if I make an error in the XML, the validation will fail.
The XML file looks like this:
<?xml version="1.0" encoding="utf-8" ?>
<shiporder orderid="889923">
<orderperson>John Smith</orderperson>
<shipto>
<name>Ola Nordmann</name>
<address>Langgt 23</address>
<city>4000 Stavanger</city>
<country>Norway</country>
</shipto>
<item>
<title>Empire Burlesque</title>
<note>Special Edition</note>
<quantity>1</quantity>
<price>10.90</price>
</item>
<item>
<title>Hide your heart</title>
<quantity>1</quantity>
<!--Change to "one" to see validation error-->
<price>9.90</price>
</item>
</shiporder>
As you can see it contains orders, and it will likely contain more orders within tags.
The schema looks like this:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="shiporder">
<xs:complexType>
<xs:sequence>
<xs:element name="orderperson" type="xs:string"/>
<xs:element name="shipto">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="xs:string"/>
<xs:element name="address" type="xs:string"/>
<xs:element name="city" type="xs:string"/>
<xs:element name="country" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="item" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="title" type="xs:string"/>
<xs:element name="note" type="xs:string" minOccurs="0"/>
<xs:element name="quantity" type="xs:positiveInteger"/>
<xs:element name="price" type="xs:decimal"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="orderid" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
</xs:schema>
Finally I have tried to search for how to populate and manage the listView control, but cannot find anything accurate. I found this for example: Populate ListView from XML file But it doesn't seem to work in my case since it is about Win Forms. I have tried a lot of different approaces but cant seem to figure it out.
My Default.aspx looks like this right now:
<%@ Page Title="Test" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>
<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">
<div class="jumbotron">
<h2>Orders</h2>
<p>Showing orders from XML-file</p>
<asp:ListView ID="listViewOrders" DataSourceID="listViewOrders" runat="server">
</asp:ListView>
<asp:Table ID="Table1" runat="server"></asp:Table>
</div>
</asp:Content>
As you can see, I tried setting the property DataSourceID in the ListView control as recommended on msdn (https://msdn.microsoft.com/en-us/library/bb398790.aspx#Code Examples) But I don't know how to use it in the C# code as the code examples that I have found on MSDN refer to usage of SQL databases.
Sorry for lengthy post and if something is unclear or should be obvious to me, please let me know. I am seeking a simplistic solution as I am not very experienced within web application programming. Thank you in advance!
