1. C# tutorial

  • 1.1. C# introduction

    C# is a simple, modern, general-purpose, object-oriented programming language developed by Microsoft and approved by E...
    2023-10-12 23:00:08 UTC

  • 1.2. C# environment

    In this chapter, we will discuss the tools needed to create C# programming. We have already mentioned that C# is ...
    2023-10-12 23:00:05 UTC

  • 1.3. C# program structure

    Before we learn the basic building blocks of the C# programming language, let’s take a look at the smallest program st...
    2023-10-12 23:00:07 UTC

  • 1.4. C# basic syntax

    C# is an object-oriented programming language. In the object-oriented programming method, the program consists of a va...
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  • 1.5. C# data type

    In C#, variables are divided into the following types: Value type Reference...
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  • 1.6. C# type conversion

    Type conversion is fundamentally type casting, or the conversion of data from one type to another. In C#, there are tw...
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  • 1.7. C# variable

    A variable is simply the name of a storage area for the program to operate on. In C#, each variable has a specific typ...
    2023-10-12 23:00:06 UTC

  • 1.8. C# constant

    The constant is a fixed value and does not change during program execution. Constants can be any basic data type, such...
    2023-10-12 23:00:07 UTC

  • 1.9. C # operator

    An operator is a symbol that tells the compiler to perform a specific mathematical or logical operation. C # has a wea...
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  • 1.10. C # judgment

    The judgment structure requires the programmer to specify one or more conditions to be evaluated or tested, as well as...
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  • 1.11. C # if statement

    One if a statement consists of a Boolean expression followed by one or more statements. ...
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  • 1.12. C# if...else statement

    One if statement can be followed by an optional else statement ...
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  • 1.13. C# nesting if statement

    In C #, nesting if-else statement is legal, which means that you can use a if ...
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  • 1.14. C # switch statement

    One switch statement allows you to test when a variable is equal to multiple values. Each va...
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  • 1.15. C # cycle

    Sometimes, you may need to execute the same piece of code multiple times. Ingeneral, statements are executed sequentia...
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  • 1.16. C # while loop

    As long as the given condition is true, the while loop statement repeats a target statement....
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  • 1.17. C # for/foreach loop

    One for loop is a repetitive control structure that allows you to writea loop that executes ...
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  • 1.19. C # nested loop

    C # allows you to use another loop within one loop, and here are a few examples to illustrate this concept. ...
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  • 1.20. C # break statement

    In C # break statement has the following two uses: When ...
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  • 1.21. C # continue statement

    In C # continue sentence is a bit like break statement. But it’s n...
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  • 1.22. C # package

    Encapsulation is defined as “enclosing one or more projects in a physical or logical package”. In object-oriented prog...
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  • 1.23. C # method

    One way is to organize some related statements together to perform a block of statements for a task. Every C# program ...
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  • 1.24. C # nullable type

    1.24.1. C# single question mark ? and double question mark ...
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  • 1.25. C # Array

    An array is a sequential collection of fixed sizes that stores elements of the same type. An array is a collection use...
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  • 1.26. C # multidimensional array

    C # supports multidimensional arrays. A multidimensional array is also called a rectangular array. You can de...
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  • 1.27. C # interlaced array

    A staggered array is an array. An interlaced array is an one-dimensional array. You can declare a fi...
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  • 1.28. C # passes an array to the function

    In C #, you can pass an array as an argument to a function. You can pass a pointer to the array to the function by spe...
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  • 1.29. C # parameter array

    Sometimes, when you declare a method, you cannot determine the number of parameters to pass to the function as argumen...
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  • 1.30. C # Array class

    Array class is the base class for all arrays in C #. It is defined in the System ...
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  • 1.31. C # string

    In C #, you can use character arrays to represent strings, but it is more common to use the string ...
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  • 1.32. C # structure

    In C #, structures are value type data structures. It enables a single variable to store related data of various data ...
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  • 1.33. C # enumeration

    An enumeration is a set of named integer constants. Enumerated types are made using the enum ...
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  • 1.34. C # Class

    When you define a class, you define a blueprint for data types. This does not actually define any data, but it defines...
    2023-10-12 23:00:06 UTC

  • 1.35. C # inheritance

    Inheritance is one of the most important concepts in object-oriented programming. Inheritance allows us to define one ...
    2023-10-12 23:00:06 UTC

  • 1.36. C# polymorphism

    Polymorphism is the ability of the same behavior to have many different forms or forms of expression. Polymor...
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  • 1.37. C # operator overload

    You can redefine or overload the operators built into C #. Therefore, programmers can also use operators of user-defin...
    2023-10-12 23:00:07 UTC

  • 1.38. C # interface

    Interface defines the syntax contract that all classes should follow when inheriting interfaces. The interface defines...
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  • 1.39. C # namespace

    Namespaces are designed to provide a way to separate one set of names from others. The name of a class declared in one...
    2023-10-12 23:00:07 UTC

  • 1.40. C# preprocessor instruction

    The preprocessor instruction instructs the compiler to preprocess the information before the actual compilation begins...
    2023-10-12 23:00:06 UTC

  • 1.41. C # regular expression

    A regular expression is a pattern that matches input text. .Net framework provides a r...
    2023-10-12 23:00:05 UTC
Principles and Applications of WebGIS  37

IT Tools  337

Web Frameworks  49

Principles, Technologies, and Methods of Geographic Information Systems  102

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.

WEB Technology  258

Systems  232

Programming Language  353