Download PDF by Sam Abolrous: Learn C#

By Sam Abolrous

ISBN-10: 1435611160

ISBN-13: 9781435611160

ISBN-10: 1598220357

ISBN-13: 9781598220353

Examine C# starts off with the fundamentals, then dives into the depths of C# improvement with easy-to-use tutorials, ready-to-run examples, and drills. The publication covers the language good points brought in models 1.0, 2.0, and 3.0, with an emphasis at the robust positive aspects brought in C# 2.0 and the improvements further in C# 3.0. also, the booklet introduces the IDE and the positive aspects of visible Studio 2005 that bring up productiveness equivalent to XSD-based IntelliSense, code snippets, shrewdpermanent tags, and refactoring. find out about: Generics Iterators nameless varieties and techniques Partial and static sessions Nullable forms The namespace alias qualifier estate accessor accessibility Covariance and contravariance Implicitly typed neighborhood variables and arrays item initializers Func delegate kinds Lambda expressions and question expressions

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Run the program by typing its name (FirstProgram) and pressing Enter. ” on your screen. Note If you are using the Visual Studio IDE to build the program, you Ü can use the console applications, as explained in Chapter 13. ” program are explained. cs // The first program in C# The two forward slash characters (//) at the beginning of the line convert the entire line into a comment, which is ignored by the compiler. You can place the comment characters anywhere in the line, in which case they convert the text that follows into a comment.

Click the Start menu. 2. Select All Programs. 3. Select Microsoft Visual Studio. 4. Select Visual Studio Tools. 5. Click Visual Studio Command Prompt. This opens up the window shown in Figure 1-6. exe) to the path, in which case you can access the command-line compiler from any directory. Figure 1-6 shows the response to the csc command in the Visual Studio 2005 Command Prompt window. Figure 1-6: The Visual Studio Command Prompt window. NET | 13 1-6 Comparison of C# and C++ 1-6 Comparison of C# and C++ If you are coming from a C++ background, the following information will be useful for you as it contains a comparison of the two languages; otherwise, you can skip this section.

In order to convert the variable back to a value type you use the unboxing operation, which is performed by casting the reference-type variable with (int). The following statement assigns the value pointed to by myObj to a new value-type variable, yourInt: yourInt = (int) myObj; // unboxing This statement creates a new value-type variable that contains the same value, 123, as shown in Figure 3-3. Figure 3-3: Memory after unboxing. Notice that you can use the same variable, myInt, instead of using a third variable, yourInt, in the unboxing operation.

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Learn C# by Sam Abolrous


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