sams sams teach yourself the c sharp language in 21 days pdf

... and Collections? 112 Objects 112 Collections 113 Using System Objects 114 Accessing Objects 118 Finding the Object’s Class 118 Creating Objects 119 Acting on Objects and Collections 120 Creating ... public—meaning they were not defined by the routine (within the scope of the routine). By being defined earlier in the module, they can be accessed in any routine that might need them. The scope of your ... 197 Building the Initial Design 198 Choosing the Tasks 198 Setting the Limits 204 Creating the Database 205 Building the Tables 205 Defining the Indexes 208 Building the Application Prototype 209 Using...

Ngày tải lên: 23/03/2014, 15:20

... Program-Development Cycle 9 Creating the Source Code 9 Understanding the Execution of a C# Program 11 Compiling C# Source Code to Intermediate Language 13 Completing the Development Cycle 14 Creating Your ... to the directory containing the program, and then run the program from the command line. Note viii Sams Teach Yourself the C# Language in 21 Days Using Iteration Statements 128 Executing Code ... application. You might also see these applications referred to as WinForm xviii Sams Teach Yourself the C# Language in 21 Days catch 724 char 724 checked 724 class 724 const 725 continue 725 decimal...

Ngày tải lên: 13/08/2014, 08:20

... produced. In those cases, you can have the compiler avoid checking the code. This is done with the unchecked key- word, as illustrated in Listing 2.8. LISTING 2.8 Unchecked.cs—Marking Code as Unchecked 1: ... characters because the slash “escapes” from the regular text and indicates that the fol- lowing character is special (or extended). Note LISTING 2.7 chars_table.cs The Special Characters 1: // chars_table.cs 2: ... value of ctr (first 63) and places it into the character variable ch. Because ctr is an integer, you have to tell the computer to convert the integer to a char- acter, which the (char) statement...

Ngày tải lên: 13/08/2014, 08:20

... plus storing routines commonly used with a circle. These routines could include getting the circle’s area, getting its cir- cumference, changing its center point, changing its radius, and much more. ... length of the line. Continuing with the listing, you see in Line 21 that a new object is created using the Line class. This new Line object is given the name myLine. Line 21 follows the same ... class. If Point will be used only within the context of a line, it can be defined within the Line class. This enables Point objects to be used in the Line class. The code for the nested Point...

Ngày tải lên: 13/08/2014, 08:20

... point(1,0); 375: mySquare.width.end = new point(10,0); LISTING WR1.1 continued CH 4 C H 2 C H 2 C H 2 C H 6 C H 5 C H 4 C H 7 C H 5 CH 6 C H 5 C H 6 CH 6 CH 5 C H 2 CH 7 C H 5 C H 5 C H 5 CH ... LISTING WR1.1 continued CH 5 C H 5 CH 5 C H 5 C H 5 C H 4 C H 5 C H 5 CH 5 C H 5 CH 6 CH 2 CH 2 C H 2 C H 3 C H 3 CH 3 C H 6 Listing 7.3 adds the same length method you have seen in listings ... 1627 ã line class in Lines 3499 ã square class in Lines 106174 ã circle class in Lines 182237 ã WR01App class in Lines 239390 The line, square, and circle classes are all similar. The point structure...

Ngày tải lên: 13/08/2014, 08:20

... 9.2, the catch statement prints a message and the program flow then continues. Line 25, which contains a call to the WriteLine method, is still executed. Catching Exception Information In Listing ... You can include a catch state- ment that is more specific in fact, you can write a catch statement for a specific excep- tion. Listing 9.4 includes a catch statement that captures the exception ... ); Using Multiple catches for a Single try The catch statement in Listing 9.2 is rather general. It can catch any exception that might have occurred in the code within the try statement code....

Ngày tải lên: 13/08/2014, 08:20

... is cast to a character value in Line 22. The character value is then appended to the string Input. After the entry of characters is completed, Line 27 prints the full value of the Input string. ... location within the current StringBuilder object. Replace Changes all copies of a given character with a new character. ToString Converts StringBuilder to String. The StringBuilder class can ... to the console. The first placeholder in each of these lines displays the floating-point value as a fixed-point number using the F specifier. The second placeholder prints the same variable in...

Ngày tải lên: 13/08/2014, 08:20

... are placed into the card structure within the deck’s card array. The location in the array where CardValue and CardSuit are being placed is tracked using currcard. The calculation in Line 89 ... listing increments the character to the next character value or decrements the character to the preceding value. Note that this is moving through the character values, so incrementing Z or decrementing A ... of the current card position and more. The Deck class includes an array of cards in Line 70. The individual card structures in this array are initialized in the constructor of the deck (Lines 76–94)....

Ngày tải lên: 13/08/2014, 08:20

... autoscaling the form. AutoScroll The form has the automatic capability of scrolling. AutoScrollMargin The size of the margin for the autoscroll. AutoScrollMinSize The minimum size of the autoscroll. AutoScrollPosition ... A constructor has been included in Lines 10–13 of the listing. The con- structor again has one simple call, InitializeComponent. This call causes the code in Lines 17–43 to execute. This is the ... statements include the Drawing and Windows.Forms namespaces within the System namespace. The Drawing namespace is used to shorten the names of the Point class. The Windows.Forms namespace is included...

Ngày tải lên: 13/08/2014, 08:20

... creating standards for communicating across the Web. The complexity of Web services is in the communication. The wsdl tool created the complex code for you. By creating standards for communicating ... OleDbCommand(); You can then associate the command object with the connection object by setting the command’s Connection property: myCommand.Connection = myConnection; You now have a command object ... services. Examining the Concept of a Component Before tackling the concept of a Web service, it is worth looking at the concept of components. A component is a piece of software that has a well-defined inter- face,...

Ngày tải lên: 13/08/2014, 08:20

Ngày tải lên: 13/08/2014, 08:20

... circumstances, program execution starts at the first statement in main() and terminates at the last statement in main(). The #include Directive (Line 2) The #include directive instructs the C ... for the Indy PC News magazine. Introduction your source code. In the second step, you compile the source code to create an object file. In the third step, you link the compiled code to create ... with C l A Brief History of the C Language l Why Use C? l Preparing to Program l The Program Development Cycle m Creating the Source Code m Compiling the Source Code m Linking to Create an Executable...

Ngày tải lên: 04/07/2014, 20:21

... disk file containing the machine language instructions that correspond to your source code statements. The machine language instructions created by the compiler are called object code, and the disk ... circumstances, program execution starts at the first statement in main() and terminates at the last statement in main(). The #include Directive (Line 2) The #include directive instructs the C ... to create a disk file containing your source code. In the second step, you compile the source code to create an object file. In the third step, you link the compiled code to create an executable...

Ngày tải lên: 26/01/2014, 15:20

... In these cases, a line continuation character is used to indicate that the following line is a continuation of the current statement. Closing Thoughts The Microsoft .NET Framework and C# continue ... a bit tedious. The get accessor uses a return statement, which simply instructs the accessor to return the value indicated. In the set accessor of the code in Listing 3.3, the class field firstName ... reduces the chances of version conflicts. www.it-ebooks.info ptg 72 HOUR 3: Understanding Classes and Objects the C# Way Watch Out! In fact, the compiler transforms the code shown in Listing...

Ngày tải lên: 29/03/2014, 15:20

... 707 Using the Coordinate-Handling Classes 710 Using the CPoint Class 710 Using the CRect Class 712 Using the CSize Class 717 Using the Time-Handling Classes 718 Using the COleDateTime Class ... the Document Functionality 205 Showing the User 208 Saving and Loading the Drawing 213 Deleting the Current Drawing 214 Saving and Restoring the Drawing 215 Interacting with the Menu 218 Adding ... Tracer 698 APPENDIX FUSING MFC’S HELPER CLASSES 699 Using the Collection Classes 699 Using the Array Classes 700 Using the List Classes 702 Using the Map Classes 704 Creating Custom Collection Classes...

Ngày tải lên: 04/07/2014, 15:32

... Working with C+ + Classes and Objects 665 Working with Complex Data in C+ + 666 Using Functions with Structures 667 Using Classes 674 Controlling Access to Data in a Class 675 Setting the Access ... Destructors 684 Function Overloading Revisited 686 Review of the OOP Constructs in C+ + 687 Using Classes as Data Members 688 Accessing Classes in Classes 689 Inheriting in C+ + 689 Building a Base Class ... Getting Started with C 7 A Brief History of the C Language 7 Why Use C? 8 Preparing to Program 9 The Program Development Cycle 10 Creating the Source Code 10 Compiling the Source Code 12 Linking...

Ngày tải lên: 06/07/2014, 00:20

Ngày tải lên: 13/08/2014, 08:20

Ngày tải lên: 13/08/2014, 08:20

Ngày tải lên: 13/08/2014, 08:20