Microsoft official course. Creating methods, handling exceptions, and monitoring applications. (Module 2)

Сентябрь 7, 2022

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Microsoft official course. Creating methods, handling exceptions, and monitoring applications. (Module 2)

Содержание

2. Module Overview Creating and Invoking Methods Creating Overloaded Methods and Using Optional and Output Parameters Handling
3. Lesson 1: Creating and Invoking Methods What Is a Method? Creating Methods Invoking Methods Debugging Methods
4. What Is a Method? Methods encapsulate operations that protect data .NET Framework applications contain a Main
5. Creating Methods Methods comprise two elements: Method specification (return type, name, parameters) Method body Use the
6. Invoking Methods To call a method specify: Method name Any arguments to satisfy parameters var upTime
7. Debugging Methods Visual Studio provides debug tools that enable you to step through code When debugging
8. Demonstration: Creating, Invoking, and Debugging Methods In this demonstration, you will create a method, invoke the
9. Text Continuation
10. Lesson 2: Creating Overloaded Methods and Using Optional and Output Parameters Creating Overloaded Methods Creating Methods
11. Creating Overloaded Methods Overloaded methods share the same method name Overloaded methods have a unique signature
12. Creating Methods that Use Optional Parameters Define all mandatory parameters first Satisfy parameters in sequence void
13. Calling a Method by Using Named Arguments Specify parameters by name Supply arguments in a sequence
14. Creating Methods that Use Output Parameters Use the out keyword to define an output parameter Provide
15. Lesson 3: Handling Exceptions What Is an Exception? Handling Exception by Using a Try/Catch Block Using
16. What Is an Exception? An exception is an indication of an error or exceptional condition The
17. Handling Exception by Using a Try/Catch Block Use try/catch blocks to handle exceptions Use one or
18. Using a Finally Block Use a finally block to run code whether or not an exception
19. Throwing Exceptions Use the throw keyword to throw a new exception Use the throw keyword to
20. Lesson 4: Monitoring Applications Using Logging and Tracing Using Application Profiling Using Performance Counters Demonstration: Extending
21. Using Logging and Tracing Logging provides information to users and administrators Windows event log Text files
22. Using Application Profiling Create and run a performance session Analyze the profiling report Revise your code
23. Using Performance Counters Create performance counters and categories in code or in Server Explorer Specify: A
24. Demonstration: Extending the Class Enrollment Application Functionality Lab In this demonstration, you will learn about the
25. Text Continuation
26. Lab: Extending the Class Enrollment Application Functionality Exercise 1: Refactoring the Enrollment Code Exercise 2: Validating
27. Text Continuation
28. Lab Scenario You have been asked to refactor the code that you wrote in the lab
29. Module Review and Takeaways Review Question(s)
31. Скачать презентацию

Слайд 2

Module Overview
Creating and Invoking Methods Creating Overloaded Methods and Using Optional and

Output Parameters Handling Exceptions Monitoring Applications

Слайд 3

Lesson 1: Creating and Invoking Methods
What Is a Method? Creating Methods Invoking Methods Debugging

Methods Demonstration: Creating, Invoking, and Debugging Methods

Слайд 4

What Is a Method?
Methods encapsulate operations that protect data
.NET Framework applications

contain a Main entry point method
The .NET Framework provides many methods in the base class library

Слайд 5

Creating Methods
Methods comprise two elements:
Method specification (return type, name, parameters)
Method body

Use the ref keyword to pass parameter references

void StartService(int upTime, bool shutdownAutomatically)
{
// Perform some processing here.
}

Слайд 6

Invoking Methods
To call a method specify:
Method name
Any arguments to satisfy parameters

var upTime = 2000;
var shutdownAutomatically = true;
StartService(upTime, shutdownAutomatically);
// StartService method.
void StartService(int upTime, bool shutdownAutomatically)
{
// Perform some processing here.
}

Слайд 7

Debugging Methods
Visual Studio provides debug tools that enable you to step

through code
When debugging methods you can:
Step into the method
Step over the method
Step out of the method

Слайд 8

Demonstration: Creating, Invoking, and Debugging Methods
In this demonstration, you will create

a method, invoke the method, and then debug the method.

Слайд 9

Text Continuation

Слайд 10

Lesson 2: Creating Overloaded Methods and Using Optional and Output Parameters
Creating

Overloaded Methods Creating Methods that Use Optional Parameters Calling a Method by Using Named Arguments Creating Methods that Use Output Parameters

Слайд 11

Creating Overloaded Methods
Overloaded methods share the same method name
Overloaded methods have

a unique signature

void StopService()
{
...
}
void StopService(string serviceName)
{
...
}
void StopService(int serviceId)
{
...
}

Слайд 12

Creating Methods that Use Optional Parameters
Define all mandatory parameters first
Satisfy parameters

in sequence

void StopService(
bool forceStop,
string serviceName = null,
int serviceId =1)
{
...
}

var forceStop = true;
StopService(forceStop);
// OR
var forceStop = true;
var serviceName = "FourthCoffee.SalesService";
StopService(forceStop, serviceName);

Слайд 13

Calling a Method by Using Named Arguments
Specify parameters by name
Supply arguments

in a sequence that differs from the method’s signature
Supply the parameter name and corresponding value separated by a colon

StopService(true, serviceID: 1);

Слайд 14

Creating Methods that Use Output Parameters
Use the out keyword to define

an output parameter
Provide a variable for the corresponding argument when you call the method

bool IsServiceOnline(string serviceName, out string statusMessage)
{
...
}

var statusMessage = string.Empty;
var isServiceOnline = IsServiceOnline(
"FourthCoffee.SalesService",
out statusMessage);

Слайд 15

Lesson 3: Handling Exceptions
What Is an Exception? Handling Exception by Using a

Try/Catch Block Using a Finally Block Throwing Exceptions

Слайд 16

What Is an Exception?
An exception is an indication of an error

or exceptional condition
The .NET Framework provides many exception classes:
Exception
SystemException
ApplicationException
NullReferenceException
FileNotFoundException
SerializationException

Слайд 17

Handling Exception by Using a Try/Catch Block
Use try/catch blocks to handle

exceptions
Use one or more catch blocks to catch different types of exceptions

try
{
}
catch (NullReferenceException ex)
{
// Catch all NullReferenceException exceptions.
}
catch (Exception ex)
{
// Catch all other exceptions.
}

Слайд 18

Using a Finally Block
Use a finally block to run code whether

or not an exception has occurred

try
{
}
catch (NullReferenceException ex)
{
// Catch all NullReferenceException exceptions.
}
catch (Exception ex)
{
// Catch all other exceptions.
}
finally
{
// Code that always runs.
}

Слайд 19

Throwing Exceptions
Use the throw keyword to throw a new exception
Use the

throw keyword to rethrow an existing exception

try
{
}
catch (NullReferenceException ex)
{
}
catch (Exception ex)
{
...
throw;
}

var ex =
new NullReferenceException("The 'Name' parameter is null.");
throw ex;

Слайд 20

Lesson 4: Monitoring Applications
Using Logging and Tracing Using Application Profiling Using Performance Counters Demonstration:

Extending the Class Enrollment Application Functionality Lab

Слайд 21

Using Logging and Tracing
Logging provides information to users and administrators
Windows event

log
Text files
Custom logging destinations
Tracing provides information to developers
Visual Studio Output window
Custom tracing destinations

Слайд 22

Using Application Profiling
Create and run a performance session
Analyze the profiling report
Revise

your code and repeat

Слайд 23

Using Performance Counters
Create performance counters and categories in code or in

Server Explorer
Specify:
A name
Some help text
The base performance counter type
Update custom performance counters in code
View performance counters in Performance Monitor (perfmon.exe)

Слайд 24

Demonstration: Extending the Class Enrollment Application Functionality Lab
In this demonstration, you

will learn about the tasks that you will perform in the lab for this module.

Слайд 25

Text Continuation

Слайд 26

Lab: Extending the Class Enrollment Application Functionality
Exercise 1: Refactoring the Enrollment

Code Exercise 2: Validating Student Information Exercise 3: Saving Changes to the Class List

Logon Information

Virtual Machine: 20483B-SEA-DEV11, MSL-TMG1
User Name: Student
Password: Pa$$w0rd

Estimated Time: 90 minutes

Слайд 27

Text Continuation

Слайд 28

Lab Scenario
You have been asked to refactor the code that you

wrote in the lab exercises for module 1 into separate methods to avoid the duplication of code in the Class Enrollment Application.
Also, you have been asked to write code that validates the student information that the user enters and to enable the updated student information to be written back to the database, handling any errors that may occur.

Слайд 29

Microsoft official course. Creating methods, handling exceptions, and monitoring applications. (Module 2)

Содержание

Module OverviewCreating and Invoking Methods Creating Overloaded Methods and Using Optional and

Lesson 1: Creating and Invoking MethodsWhat Is a Method? Creating Methods Invoking Methods Debugging

What Is a Method?Methods encapsulate operations that protect data.NET Framework applications

Creating MethodsMethods comprise two elements:Method specification (return type, name, parameters)Method body

Invoking MethodsTo call a method specify:Method nameAny arguments to satisfy parameters

Debugging MethodsVisual Studio provides debug tools that enable you to step

Demonstration: Creating, Invoking, and Debugging MethodsIn this demonstration, you will create

Text Continuation

Lesson 2: Creating Overloaded Methods and Using Optional and Output ParametersCreating

Creating Overloaded MethodsOverloaded methods share the same method nameOverloaded methods have

Creating Methods that Use Optional ParametersDefine all mandatory parameters firstSatisfy parameters

Calling a Method by Using Named ArgumentsSpecify parameters by nameSupply arguments

Creating Methods that Use Output ParametersUse the out keyword to define

Lesson 3: Handling ExceptionsWhat Is an Exception? Handling Exception by Using a

What Is an Exception?An exception is an indication of an error

Handling Exception by Using a Try/Catch BlockUse try/catch blocks to handle

Using a Finally BlockUse a finally block to run code whether

Throwing ExceptionsUse the throw keyword to throw a new exceptionUse the

Lesson 4: Monitoring ApplicationsUsing Logging and Tracing Using Application Profiling Using Performance Counters Demonstration:

Using Logging and TracingLogging provides information to users and administratorsWindows event

Using Application ProfilingCreate and run a performance sessionAnalyze the profiling reportRevise

Using Performance CountersCreate performance counters and categories in code or in

Demonstration: Extending the Class Enrollment Application Functionality LabIn this demonstration, you

Text Continuation

Lab: Extending the Class Enrollment Application FunctionalityExercise 1: Refactoring the Enrollment

Text Continuation

Lab ScenarioYou have been asked to refactor the code that you

Module Review and TakeawaysReview Question(s)

Похожие презентации

Module Overview
Creating and Invoking Methods Creating Overloaded Methods and Using Optional and

Lesson 1: Creating and Invoking Methods
What Is a Method? Creating Methods Invoking Methods Debugging

What Is a Method?
Methods encapsulate operations that protect data
.NET Framework applications

Creating Methods
Methods comprise two elements:
Method specification (return type, name, parameters)
Method body

Invoking Methods
To call a method specify:
Method name
Any arguments to satisfy parameters

Debugging Methods
Visual Studio provides debug tools that enable you to step

Demonstration: Creating, Invoking, and Debugging Methods
In this demonstration, you will create

Lesson 2: Creating Overloaded Methods and Using Optional and Output Parameters
Creating

Creating Overloaded Methods
Overloaded methods share the same method name
Overloaded methods have

Creating Methods that Use Optional Parameters
Define all mandatory parameters first
Satisfy parameters

Calling a Method by Using Named Arguments
Specify parameters by name
Supply arguments

Creating Methods that Use Output Parameters
Use the out keyword to define

Lesson 3: Handling Exceptions
What Is an Exception? Handling Exception by Using a

What Is an Exception?
An exception is an indication of an error

Handling Exception by Using a Try/Catch Block
Use try/catch blocks to handle

Using a Finally Block
Use a finally block to run code whether

Throwing Exceptions
Use the throw keyword to throw a new exception
Use the

Lesson 4: Monitoring Applications
Using Logging and Tracing Using Application Profiling Using Performance Counters Demonstration:

Using Logging and Tracing
Logging provides information to users and administrators
Windows event

Using Application Profiling
Create and run a performance session
Analyze the profiling report
Revise

Using Performance Counters
Create performance counters and categories in code or in

Demonstration: Extending the Class Enrollment Application Functionality Lab
In this demonstration, you

Lab: Extending the Class Enrollment Application Functionality
Exercise 1: Refactoring the Enrollment

Lab Scenario
You have been asked to refactor the code that you

Module Review and Takeaways
Review Question(s)