ArrayList in C#.net

             First time, User uses this ArrayList class this error will occur.

Reason: Because user doesn’t declare a namespace for ArrayList.

Solution: Declare Namespace Using System.Collection.

In this Sample Project, I am using enumeration and ArrayList.

 

In this Example, I am creating an enumeration and Call that enumeration into ArrayList and sort that ArrayList.

Some useful Methods in ArrayList:

1. Add
2. AddRange
3. Remove
4. RemoveAt
5. Sort
6. RemoveRange

Add:

   User can add a information into ArrayList Using Add Method.

This is a Simple Example for Add Method.

AddRange:

     Add the elements of an ICollection to the end of the ArrayList.

ICollection:

· It is an Interface. Because it starts with “I”. Generally, “I” is called Interface.

· Defines size, enumerators, and synchronization methods for all nongeneric collections.

 

Here, I give a sample code for AddRange Method for ArrayList create a two enumeration .One is ComName and another one is ComPort.

Remove:

       User can remove a list of items in ArrayList.

       User can specify a Word.

 

RemoveAt:

       User can remove a list of items in ArrayList.

       User can specify a Index no.

RemoveRange:

       User can remove a list of items in ArrayList.

       User can specify range of remove.

Process Vs Thread in C#.net

Process:

1.   It Exists in the OS.
2.   Each and Every Process Contains One or More Threads.

Thread:

1.   It exists with in Process
2. It is a Light-Weight-Process.
3. Threads Share memories with other Thread running in the Same Application.

Basic XML

Introduction:

· XML -- eXtendable Markup Language.

· It is a Case Sensitive.

· It is a Tag Code.

· Easily, it understands by Machine and Human.

· Storing and Retrieving data.

· All elements can have text content and attributes

XML Code likes this

<FirstName></FirstName>

   Structure of XML:

Root Element:

              It is a Parent Element of all Elements.

ATTRIBUTES:

             Additional information about an element.

ELEMENTS:

              It can be extended and carry more information.

              It can have attributes.

TEXT:

              Value of Every Element. User can Read, Write and Modify.

Create XML file in C#.Net:

Declare a namespace for XML

using System.Xml;

using System.IO;

User can create XML file using XMLWriter.

XML File created in the D Driver.

Read XML File Data:

  User can read XML file in two ways.

1)     Using XMLReader

2)     Using SelectSingleNode

1)     Using XMLReader:

              User wants to read all elements in the XML File using XMLReader.

Now, we go to Coding Section.

Using XMLTextReader: