gego.info

CSharp - XML Validation with XML Schema

Posted on January 30th, 2006 by gernot.
Categories: CSharp.
Tags: .NET, C#, code, schema, validation, xml

This is a short tutorial how one can validate a XML Document against a XML schema by using C# and the .NET framework.

C# Class

using System.Xml;
using System.Xml.Schema;

namespace XMLValidation
{
class XMLValidatorTest
{

private bool XMLisValid = true;

public void ReadValidateXMLFile()
{
   XmlTextReader reader = new XmlTextReader(“C:\\test.xml”);
   XmlValidatingReader validator = new XmlValidatingReader(reader);
   validator.ValidationType = ValidationType.Schema;
   validator.ValidationEventHandler +=
      new ValidationEventHandler(this.XMLValidationEventHandler);

   while (validator.Read())
   {
      //Add code here to process XML content
   }
   validator.Close();

   //Check if XML document is valid or not
   if (this.XMLisValid)
      Console.WriteLine(“XML Document is valid”);
   else
      Console.WriteLine(“XML Document is invalid”);
   }
}

public static void XMLValidationEventHandler(
  object sender,ValidationEventArgs args)
{
   this.XMLisValid = false;
   Console.WriteLine(“XML Validation event” + args.Message);
}

}
}

XML Root Node - XSD Reference

In the XML File:

‹?xml version=”1.0″ encoding=”utf-8″ ?›
‹testNS:testRoot
  xmlns:testNS=”http://www.gego.info/testxmlns”
  xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
  xsi:schemaLocation=”http://www.gego.info/testxmlns test.xsd”›

In the XSD File:

‹?xml version=”1.0″ encoding=”utf-8″ ?›
‹xs:schema
  id=”test”
  targetNamespace=”http://www.gego.info/testxmlns”
  elementFormDefault=”qualified”
  attributeFormDefault=”unqualified”
  xmlns=”http://www.gego.info/testxmlns”
  xmlns:xs=”http://www.w3.org/2001/XMLSchema”›

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CSharp - Create and Use User Controls

Posted on January 25th, 2006 by gernot.
Categories: CSharp.
Tags: .NET, C#, code, gui

This is a short Tutorial how to create and use User Controls in the .NET Framework (C#):

Create and Use User Control in Visual Studio

1. Create a new Solution: MyMainApplication.sln & MyMainApplication.csproj
   1. Create a new Windows Form: Form1.cs
2. In Solution:
   1. Add >>
   2. New Project >>
   3. Windows Control Library: MyUserControlLibrary.csproj
3. In MyMainApplication.csproj:
   1. Right Click References >>
   2. Add Reference >>
   3. Tab: Projects >>
   4. Mark MyUserControlLibrary.csproj >>
   5. OK
4. In MyUserControlLibrary.csproj:
   1. Right Click on Project >>
   2. Add >>
   3. User Control >>
   4. MyUserControl1.cs
5. Drag&Drop Controls to MyUserControl1 in Visual Studio Designer (or add manually if you like)
6. In Visual Studio Menu:
   1. Build >>
   2. Build Solution
7. In Visual Studio Designer for Form1.cs you can find the MyUserControl1 Control in the toolbox and drag&drop them to your Form
8. Note: If you make changes to the UserControl (MyUserControl1) you have to rebuild the solution everytime to see the changes in your Main Form (Form1)

Event Firing from User Control to Application

Here I want to describe how one can fire an event (e.g.: from a button) in the UserControl and notify the Main Application, which uses the User Control:

In MyUserControl1.cs:

//Just a TestString
public string TestString = “Test123″;
// Declare delegate Button1 clicked.
public delegate void Button1_ClickHandler();
// Declare the event, which is associated with our delegate
[Category("Action")] [Description("Fires when the Button1 is clicked.")]
public event Button1_ClickHandler Button1_Clicked;
// Handler for Button1
// NOTE: Don’t forget to add this Handler to the Button itself
private void Button1_Click(object sender, System.EventArgs e)
{
    if (Button1_Clicked != null)
      // Notify Subscribers
      Button1_Clicked();
    else
      Console.WriteLine(“No Subscribers for Button1″);
}

In Form1.cs:

// NOTE: Don’t forget to add this Handler to the UserControl itself
private void MyUserControl11_Button1_Clicked()
{
    Console.WriteLine(“Button1 was clicked in MyUserControl11, TestString:”
    + MyUserControl11.TestString);
}

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lab2004 - Vortex

Posted on February 16th, 2005 by gernot.
Categories: Studies, work.
Tags: .NET, Project_Planning

The lab2004 - project is held by the TU Vienna and Microsoft Austria.
My part was leading the development team, which job it was to develop a new kind of course management tool for students and teachers.

Vortex

• The Student Portal for students
• developed with the newest technology

Racoon

• INFLAB (Client Deployment)
• runs on the newest technology alpha, beta builds)

Build a software that …

• is expandable and customizable.

Build a student portal that …

• you want to have.
• streamlines workflows for every user group.
• has quite a lot state-of-the-art features ( mySite, portability…).

Vortex - Team:

• 3 Managers. My postiton: Development Manager
• 20 Team Members
• 15 Developers
• 5 Managment Support

Involving 2 fields of study

• Computer science
• Computer science in economics

Vortex Outcome:

NET Web - Application

• Tool for teachers and students

State of the Art Features

• Web Standards (XHTML, CSS) lead to
  • simple adaptation of design
  • portability (Handhelds,…)
• Including AD leads to extensibility
• Internationalization (english, german,…)

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