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”›

0 comments.

CSS - fluid vs. fixed Design

Posted on January 25th, 2006 by gernot.
Categories: CSS.
Tags: code, CSS, Webstandards

Everyone knows the problem: Webpages which have too much text on too small space or vica versa. The solution is either make the page fluid or fixed, and with the help of css this is pretty simple:

fixed

body {
    margin: 0;
    padding: 0;
    background-color: #000;
    color: #fff;
}
#page {
    margin: 0 auto;
    padding: 0;
    width: 760px;
    background: #fff;
}

click here for example Here the page never changes its size.
Try and change the size of the browser window.

fluid

body {
    margin: 0;
    padding: 0;
    background-color: #000;
    color: #fff;
}
#page {
    margin: auto;
    padding: 0;
    width: 90%;
    background: #fff;
}

click here for example Here the page always changes its size to fit to the resolution or browser window
Try and change the size of the browser window.

2 comments.

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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