BitArray & Argument Exceptions 70-536 Microsoft .NET Certification Post #14

BitArray & Argument Exceptions 70-536
Microsoft .NET Certification
Post #14

Hey Now Everybody,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
This post is on section 1. Developing Application that use system types & collections. Here are a few important concepts from the 1st section. As I stufy for this test I thought this would be good to post on to learn the content & others would be able to view & comment on it.

• BitArray class – is a resizable collection that can store Boolean values, In addition to being resizable, it upports common bit-level operations such as And, Not, Or, & Exclusive-or(XOR) The BitArry class would be efficient if you are writing an app that needs to perform Boolean math on a set of 42 bits.
• BitVector32 – structures purpose is to aid in manipulating bits in a 32bit integer, and it is perfect for IP address. BitVector32 is not a resiable collection at all. Instead it is fixed at 32bits
• ArrayList – does not support Boolean math
• Boolean is a single bit value.
• InvalidOperationException – Throw an InvalidOperationException if a property set or method call is not appropriate given the object’s current state. EX used if calling assembly called the method to read the filebefore specifying the file name.
• You should throw an ArgumentOutOfRangeException when a caller provides a value for a parameter but that value is invalid
• ArgumentException is a base class for all argument exceptions. You should use more specific whenever appropriate, specifically ArgumentOutOfRangeException & ArgumentNullException
• ArgumentNullException when a calling assembly provides a null value for a parameter that must have a value.
• Both SortedList & an implementation of IDictionary can be accessed by using a key

As always all comments welcome.

That’s all there is there is no more, Bye for now!

Catto

तोस्त्रिंग एकुँल्स & 70-536 Microsoft .NET Certification Post #13

मेथोड्स 70-536
Microsoft .NET Certification
Post #13

Hey Now Everybody,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
This post is on section 1. Developing Application that use system types & collections. Here are a few important concepts from the 1st section. As I stufy for this test I thought this would be good to post on to learn the content & others would be able to view & comment on it.

• All classes inherit the ToString(), Equals(), & GetType() methods from the base Object class
• Reference Types – a type that stores a pointer to the data, rather than the actual data.
• Reference types store a pointer to the data rather than the actual data.
• Types forwarding enable moving a type from one assembly into another assembly without requiring recompiling.
• Exceptions are error condition that cause normal execution to be halted
• Generics use placeholders for their types, which allow multiple types of objects to be used as a parameter
• The following methods all classes have as members:

• • ToString()
• • Equals()
• • GetType()
• • Short Type – can only store values between -32,769 & 32,769

As always all comments welcome.

That’s all there is there is no more, Bye for now!

Catto

ICompareable & Clone 70-536 Microsoft .NET Certification #12

ICompareable & Clone 70-536
Microsoft .NET Certification
Post #12

Hey Now Everybody,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
This post is on section 1. Developing Application that use system types & collections. Here are a few important concepts from the 1st section. As I stufy for this test I thought this would be good to post on to learn the content & others would be able to view & comment on it.

• Implementing IDisposable enables developers to call the Dispose() method which allows your class to free any consumed resources without waiting for automated garbage collection.
• Clone() method is inherited from the ICloneable interface
• The Clone() method is a member of the InCloneable interface
• The Dispose() method is a member of the IDisposable interface
• The CompareTo() method is a member of the IComparable interface

As always all comments welcome.

That’s all there is there is no more, Bye for now!

Catto

Cultures 70-536 Microsoft .NET Certification #11

Cultures 70-536
Microsoft .NET Certification
Post #11

Hey Now Everybody,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
This post is on section 1. Developing Application that use system types & collections. Here are a few important concepts from the 1st section. As I stufy for this test I thought this would be good to post on to learn the content & others would be able to view & comment on it.

• Neutral cultures are language, but not region specific. Neutral culture names are in the form xx, with only two lowercase characters.
• Cultures with names in the format xx-XX are specific cultres & could be retrieved using CultureInfo.GetCulturs(CultureTypes.SpecificCultures)
• CultureInfo objects examples: en, ko, ro
• Normal execution of program logic should not cause an exception. You should throw an exception whenever something unexpected happens, including receiving a parameter that is out of range.

As always all comments welcome.

That’s all there is there is no more, Bye for now!

Catto

IComparer 70-536 Microsoft .NET Certification #10

IComparer 70-536
Microsoft .NET Certification
Post #10

Hey Now Everybody,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
This post is on section 1. Developing Application that use system types & collections. Here are a few important concepts from the 1st section. As I stufy for this test I thought this would be good to post on to learn the content & others would be able to view & comment on it.

• IComparer – is an interface that should be implemented when you are creating a new collection type that must be sorted by using Array Sort.
• CompartTo() method is a member of the IComparable interface
• Use the Icomparer interface for collections that must be sorted
• The ICollection interface is the base interface for classes in the System Collections namespace. It does not support sorting
• The IDictionary interface is the base interface for nongeneric collections of key/value pairs. It does not support sorting.
• The IEqualityComparer interface supports only equality comparisons.

As always all comments welcome.

That’s all there is there is no more, Bye for now!

Catto

Event Handler 70-536 Microsoft .NET Certification #9

Event Handler 70-536
Microsoft .NET Certification
Post #9

Hey Now Everybody,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
This post is on section 1. Developing Application that use system types & collections. Here are a few important concepts from the 1st section.

• Event Handler delegates standard parameters are objects & EventArgs:
• Event handler delegates require two parameters an instance of the object class & an instance of the EventArgs class
• The EventHandler class is a predefined delegate that specifically represents a€n event handler method for an event that does not generate data. It’s not a parameter for an event handler delegate
• the Delegate class is the base class for delegate types. It’s not a parameter for event handler delegates.
• the Event class is the base event for event types. It’s not a parameter for event handler delegates

As always all comments welcome.

That’s all there is there is no more, Bye for now!

Catto

Boxing, Catch Clauses n Overiding Structs 70-536 Microsoft .NET Certification #8

Boxing, Catch Clauses & Overiding Structs
70-536
Microsoft .NET Certification
Post #8

Hey Now Everybody,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
This post is on section 1. Developing Application that use system types & collections. Here are a few important concepts from the 1st section.

• Correct order for Catch clauses - order from most specific to most general
• Overriding Structures – Reasons to override a method within a structure
i. To avoid boxing
ii. To Return something other than the type names
• Boxing – should be avoided since it adds overhead.

As always all comments welcome.

That’s all there is there is no more, Bye for now!

Catto