Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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in visual c#

If given the following delegate declaration:
public delegate void MyCallback(object obj);
write code segments to perform the following:
A)
, Design a non-static method that can be contained within an instance/object
of the MyCallback delegate type. This method should display values of two data
fields contained within the object that is passed to the method. Make-up your own
method definition that meets these requirements.
B) (^ c) Creat an instance of the MyCallback delegate (i.e. a delegate object) and
initialize this object to contain an entry point of the method defined in part A) as well as
a copy of the object that calls this method. Include the declaration statement of the
object needed to create the required delegate instance.
C) (
;) Writ a statement that uses the delegate object created in part B) to call the
method contained within this delegate object and include error checking.
expand button
Transcribed Image Text:If given the following delegate declaration: public delegate void MyCallback(object obj); write code segments to perform the following: A) , Design a non-static method that can be contained within an instance/object of the MyCallback delegate type. This method should display values of two data fields contained within the object that is passed to the method. Make-up your own method definition that meets these requirements. B) (^ c) Creat an instance of the MyCallback delegate (i.e. a delegate object) and initialize this object to contain an entry point of the method defined in part A) as well as a copy of the object that calls this method. Include the declaration statement of the object needed to create the required delegate instance. C) ( ;) Writ a statement that uses the delegate object created in part B) to call the method contained within this delegate object and include error checking.
Question 2.
Ai.
Use the MyCallback delegate type from question 2) to creat an
event field and the corresponding event property. Make up your own event identifiers.
-1
B) (
) Writ a complete statement that will add the method that you created
in question 3 A) to be a handler of the event you created in this question. Make up
your own object name that raises the event.
expand button
Transcribed Image Text:Question 2. Ai. Use the MyCallback delegate type from question 2) to creat an event field and the corresponding event property. Make up your own event identifiers. -1 B) ( ) Writ a complete statement that will add the method that you created in question 3 A) to be a handler of the event you created in this question. Make up your own object name that raises the event.
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