String and Characters: A Deeper Look
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| Character Constant | A character that's represented as an integer value, called a character code
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| Unicode Character Set | An international character set that contains many ore symbols and letters than does the ASCII character set. Character constants are established according to the Unicode character set
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| String Literals(String Constants) | Sequences of characters in double quotation marks
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| Verbatim String | It's possible to exclude escape sequences and interpret alll the characters in a string literally, using the @ character to create a verbatim string. Ex: string file = @"C:\MyFolder\MySubFolder\MyFile.txt";
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| 1. CopyTo Method | Copies a specified number of character from a string into a char array. First argument is index fro which method begins copying characters in a string. Second is character array into which characters are copied.
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| 2. CopyTo Method | Third is index specifying starting location at which method begins placing copied characters into character array. Last argument is number of characters that method will copy from string. Ex: string1.CopyTo(0, characterArray, 0, characterArray.Length)
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| Equals Method | Used to compare strings to determine whether they are equal. Method returns true if the objects are equal and false otherwise. Ex: string1.Equals("hello");
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| struct | C# provides a concept called a struct(short for "structure") that's similar to a class. structs represent value types.
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| Class ValueType | Derives from class object. All struct types derive from this class
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| System.Char | In the struct System.Char, which is the struct for characters, most methods are static, take at least one character argument and perform either a test or a manipulation on the character
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| Regular Expressions | Specially formatted strings used to find patterns in text. They can be used to ensure that data is in a particular format
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| SaveFileDialog Objects | Are used for selecting files
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| Modal Dialogs | Dialogs that prevent the user from interacting with any other window in the program until the user closes the dialog
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