C# Bible 2002 phần 4 ppsx

... abstract classes. If you try to create an object from an abstract class, the C# compiler issues an error: error CS0 144 : Cannot create an instance of the abstract class or interface 'Shape' ... System.Console.WriteLine("Hello from C#! "); By default, forgetting to use the namespace name causes the C# compiler to issue an error: error CS02 34: The type or namesp...

Ngày tải lên: 05/08/2014, 10:20

... sizeof(ushort) 2 sizeof(int) 4 sizeof(uint) 4 sizeof(long) 8 sizeof(ulong) 8 sizeof(char) 2 sizeof(float) 4 sizeof(double) 8 sizeof(bool) 1 Allocating Memory from the Stack C# provides a simple ... using the C# stackalloc keyword, as shown in Listing 19 -4 . Listing 19 -4: Allocating Memory from the Stack using System; public class MyClass When discussed with rega...

Ngày tải lên: 05/08/2014, 10:20

... simple Web application by using Visual C# in the ASP.NET framework. You learned the basics of ASP.NET and how you can create Web applications in Visual C#. Table 22-3: Events Associated with ... to aid in development. If you embed all of your strings inside your C# code, for example, then only someone familiar with C# would know where to look to change the string values. If you wr...

Ngày tải lên: 05/08/2014, 10:20

... nguy ê n 0x15A0 33 44 #include <stdio.h> int main() { 11 aa 0x15A0 33 44 { short a[10] = {1, 3, 5, 2, 0}; short *p = a; printf( “ 0x%04X %i 0x%04X %i \ n “ 55 22 printf( 0x%04X %i 0x%04X %i \ n , ... = 10, j = 14; p i 10 14 0 x 15A0 j int* p = &i; int *q = &j; 10 0x15A0 14 q j 0x15A4 *p = *q; và: 0x15A4 14 0x15A0 int i = 10, j = 14; int * p = &i ; p i 1...

Ngày tải lên: 22/07/2014, 16:21

... signed integers. The smallest possible value of an int variable is -2, 147 ,48 3, 648 ; the largest possible value is 2, 147 ,48 3, 647 . uint Variables with a uint type can hold 32-bit unsigned integers. ... everything. Part I: C# Language Fundamentals Chapter List Chapter 1: An Introduction to C# Chapter 2: Writing Your First C# Program Chapter 3: Working with Variables Chapt...

Ngày tải lên: 05/08/2014, 10:20

... storing. A uint type can contain a number ranging from 0 to 4, 2 94, 967,295; whereas a ulong value can contain a value ranging from 0 to 18 ,44 6, 744 ,073,709,551,615. If the literal is suffixed with an ... Compile Listing 4- 1 with the following command line: csc /checked+ Listing4-1.cs When you run the executable for Listing 4- 1, you get the same exception message as you did wi...

Ngày tải lên: 05/08/2014, 10:20

... fields to a value. Take a look at Listing 7 -4. Listing 7 -4: Using a Structure Before Initialization Results in Compiler Errors class Listing7 _4 { struct Point { public int X; public ... from the C# compiler: error CS0170: Use of possibly unassigned field 'X' error CS0170: Use of possibly unassigned field 'Y' warning CS0 649 : Field 'Listing7 _4...

Ngày tải lên: 05/08/2014, 10:20

... control. The C# language contains special keywords that make it easy for you to fire, publish and subscribe to events in your C# code. You can use these keywords to allow your C# classes to ... Listing 14- 2. Listing 14- 2: Using Operators with Enumerations using System; public enum FileAttributes { AttrNone = 0, AttrReadOnly = 1, AttrHidden = 2, AttrReadyForArchive =...

Ngày tải lên: 05/08/2014, 10:20

... was automatically generated by C# code."); XmlWriter.WriteStartElement("BOOK"); XmlWriter.WriteElementString("TITLE", " ;C# Bible& quot;); XmlWriter.WriteElementString("AUTHOR", ... example, enable your C# code to write text and have it encoded in the stream using ASCII, Unicode, UTF7, or UTF8 encoding algorithms. Writing to streams with...

Ngày tải lên: 05/08/2014, 10:20

... mobile deployment. Part V: C# and the .NET Framework Chapter List Chapter 31: Working with Assemblies Chapter 32: Reflection Chapter 33: C# Threading Chapter 34: Working with COM Chapter ... On a Pocket PC, you can achieve 17 x 34 characters, whereas you can achieve only 4 x 22 on a Nokia 7110 cellular phone, as shown in Figure 30-6. 4. Select the files of the project that...

Ngày tải lên: 05/08/2014, 10:20