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Table of Contents
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Single-File and Multifile Assemblies........................................................................... 27 Summary .......................................................................................................................... 31 4. Language Syntax and Features...................................................................... 32 General Program Structure............................................................................................... 32 The Main Method......................................................................................................... 33 Comments..................................................................................................................... 33 Documentation Comments........................................................................................... 33 Case Sensitivity ............................................................................................................ 34 Naming Conventions.................................................................................................... 34 Source Code Character Sets and Unicode.................................................................... 35 Identifiers ..................................................................................................................... 35 Source File Names and Contents ................................................................................. 35 Keywords ......................................................................................................................... 35 Package and Namespace Keywords............................................................................. 36 Simple Type and Constant Keywords.......................................................................... 36 Type Declaration, Access, and Manipulation Keywords............................................. 37 Modifier Keywords ...................................................................................................... 38 Flow Control Keywords ............................................................................................... 39 Exception Handling Keywords .................................................................................... 40 Unmanaged Code Keywords........................................................................................ 40 Keywords as Identifiers................................................................................................ 41 Operators .......................................................................................................................... 41 Precedence and Associativity....................................................................................... 43 Literals.............................................................................................................................. 43 Modifiers .......................................................................................................................... 44 Access Modifiers.......................................................................................................... 44 Inheritance Modifiers ................................................................................................... 45 Other Modifiers ............................................................................................................ 47 Namespaces...................................................................................................................... 48 Declaring Namespaces ................................................................................................. 48 Using Namespaces ....................................................................................................... 49 Statements ........................................................................................................................ 50 Labeled Statements ...................................................................................................... 50 Selection and Iteration Statements ............................................................................... 51 Jump Statements........................................................................................................... 52 Other Statements .......................................................................................................... 53 Summary .......................................................................................................................... 55 5. Data Types ....................................................................................................... 56 Types ................................................................................................................................ 56 Unified Type System.................................................................................................... 57 Value Types.................................................................................................................. 58 Reference Types........................................................................................................... 64 Conversion ................................................................................................................... 73 Members........................................................................................................................... 75 Member Types and Declaration Context ..................................................................... 75 Versioning and Inheritance of Members...................................................................... 76 Static Members............................................................................................................. 77 Member Attributes ....................................................................................................... 78 Member Modifiers........................................................................................................ 78 Constants ...................................................................................................................... 78
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Table of Contents
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Fields ............................................................................................................................ 79 Static and Instance Constructors .................................................................................. 81 Destructors ................................................................................................................... 83 Methods........................................................................................................................ 84 Events ........................................................................................................................... 86 Properties...................................................................................................................... 90 Indexers ........................................................................................................................ 93 Operators ...................................................................................................................... 96 Nested Types .............................................................................................................. 100 Variables......................................................................................................................... 100 Value Parameters........................................................................................................ 100 Reference Parameters ................................................................................................. 101 Output Parameters ...................................................................................................... 102 Summary ........................................................................................................................ 102 6. Advanced Language Features...................................................................... 103 Threading and Synchronization ..................................................................................... 103 Exceptions and Exception Handling .............................................................................. 103 Declaring Exceptions ................................................................................................. 103 Catching Exceptions................................................................................................... 103 Throwing Exceptions ................................................................................................. 104 The Exception Hierarchy ........................................................................................... 105 The System.Exception Class ....................................................................................... 105 Attributes........................................................................................................................ 107 Attribute Names ......................................................................................................... 107 Attribute Specification ............................................................................................... 108 Custom Attributes ...................................................................................................... 109 Compile-Time Attributes ........................................................................................... 111 Assertions ....................................................................................................................... 113 Preprocessor Directives.................................................................................................. 113 #define and #undef ..................................................................................................... 113 #if, #elif, #else, and #endif.......................................................................................... 114 #region and #endregion ............................................................................................. 115 #warning and #error .................................................................................................. 115 #line............................................................................................................................ 116 Unsafe Code ................................................................................................................... 116 The unsafe Modifier ................................................................................................... 116 The /unsafe Compiler Flag ......................................................................................... 117 Managed and Unmanaged Types ............................................................................... 117 The sizeof Operator .................................................................................................... 117 Pointers....................................................................................................................... 118 The fixed Statement .................................................................................................... 120 The stackalloc Command........................................................................................... 121 Summary ........................................................................................................................ 122
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Part III: Programming .NET with C#........................................................... 123
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7. Strings and Regular Expressions................................................................. 124 Strings............................................................................................................................. 124 Creating Strings.......................................................................................................... 124 Comparing Strings...................................................................................................... 125
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Table of Contents
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Copying Strings.......................................................................................................... 126 String Length.............................................................................................................. 126 String Concatenation .................................................................................................. 126 Changing Case............................................................................................................ 127 Working with Characters ........................................................................................... 127 Working with Substrings............................................................................................ 128 Splitting Strings.......................................................................................................... 128 Strings as Keys ........................................................................................................... 129 Parsing Strings............................................................................................................ 129 Formatting Strings...................................................................................................... 129 Encoding Strings ........................................................................................................ 132 Dynamically Building Strings .................................................................................... 136 Regular Expressions....................................................................................................... 137 Compiling Regular Expressions................................................................................. 137 Manipulating Text ...................................................................................................... 139 Ad Hoc Regular Expressions ..................................................................................... 143 Summary ........................................................................................................................ 144 8. Numbers and Dates....................................................................................... 145 Numbers ......................................................................................................................... 145 Numbers as Objects.................................................................................................... 145 Converting Numbers .................................................................................................. 148 Formatting Numbers .................................................................................................. 148 Mathematical Functions ............................................................................................. 152 Random Numbers....................................................................................................... 153 Dates and Times ............................................................................................................. 154 System.TimeSpan........................................................................................................ 154 Creating Dates ............................................................................................................ 154 Manipulating Dates .................................................................................................... 155 Formatting Dates ........................................................................................................ 155 Parsing Strings............................................................................................................ 156 Summary ........................................................................................................................ 156 9. Collections...................................................................................................... 157 Indexers .......................................................................................................................... 157 Collection Interfaces ...................................................................................................... 158 ICollection .................................................................................................................. 159 IEnumerable, IEnumerator, and the foreach Keyword.............................................. 159 IComparer and IComparable ..................................................................................... 161 Other Collection Interfaces ........................................................................................ 162 Basic Collections............................................................................................................ 162 Arrays ......................................................................................................................... 162 Hashtable ................................................................................................................... 164 ArrayList..................................................................................................................... 165 Queue ......................................................................................................................... 166 Stack ........................................................................................................................... 167 SortedList ................................................................................................................... 168 Specialized Collections .................................................................................................. 169 Strongly Typed Collections........................................................................................ 169 Unusual Collections ................................................................................................... 170 The CollectionsUtil Class............................................................................................... 170 Synchronization.............................................................................................................. 170
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Table of Contents
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Custom Collections ........................................................................................................ 171 Summary ........................................................................................................................ 172 10. Streams, Files, and I/O ............................................................................... 173 Working with the Console.............................................................................................. 173 Writing to the Console ............................................................................................... 173 Reading from the Console.......................................................................................... 174 Changing the Console Streams .................................................................................. 174 Console Summary ...................................................................................................... 174 The File System.............................................................................................................. 175 Paths ........................................................................................................................... 175 Files and Directories................................................................................................... 176 Streams ........................................................................................................................... 181 The Foundation of Streams ........................................................................................ 182 Base Streams .............................................................................................................. 183 Pass-Through Streams................................................................................................ 184 Readers and Writers ................................................................................................... 185 Synchronizing Streams............................................................................................... 187 Streams Summary ...................................................................................................... 187 Asynchronous I/O .......................................................................................................... 187 Asynchronous I/O Summary...................................................................................... 189 Isolated Storage .............................................................................................................. 189 Obtaining and Managing the Isolated Stores ............................................................. 190 Reading and Writing Isolated Data ............................................................................ 191 Isolated Storage Summary ......................................................................................... 192 Object Serialization ........................................................................................................ 192 Simple Serialization ................................................................................................... 193 Selective Serialization ................................................................................................ 195 Custom Serialization .................................................................................................. 195 Summary ........................................................................................................................ 197 11. XML Processing .......................................................................................... 198 XmlNameTable ............................................................................................................... 198 XmlReader...................................................................................................................... 199 XmlTextReader ........................................................................................................... 199 XmlValidatingReader ................................................................................................. 210 XmlNodeReader ......................................................................................................... 212 XmlWriter ....................................................................................................................... 213 XmlTextWriter ............................................................................................................ 213 Document Object Model ................................................................................................ 217 Key Classes ................................................................................................................ 217 Document Creation .................................................................................................... 218 Other Key Differences ............................................................................................... 218 XPath.............................................................................................................................. 218 IXPathNavigable ........................................................................................................ 219 XPathDocument ......................................................................................................... 219 XPathNavigator.......................................................................................................... 219 XSL Transformations..................................................................................................... 224 Creating a Transformer .............................................................................................. 224 Loading a Style Sheet................................................................................................. 225 Transforming XML Data ........................................................................................... 225 Extensibility ................................................................................................................... 226
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