1. C# tutorial

  • 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...
    2023-10-12 23:00:06 UTC
  • 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...
    2023-10-12 23:00:06 UTC
  • 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
  • 1.42. C# exception handling

    Exceptions are problems that occur during program execution. An exception inC # is a response to a special situation t...
    2023-10-12 23:00:06 UTC
  • 1.43. C# file input and output

    A file is a collection of data stored on disk with a specified name and directory path. When a file is opened for read...
    2023-10-12 23:00:05 UTC
  • 1.44. C # text file reading and writing

    StreamReader and StreamWriter class is used for data reading and writ...
    2023-10-12 23:00:08 UTC
  • 1.45. C# binary file reading and writing

    BinaryReader and BinaryWriter class is used to read and write binary ...
    2023-10-12 23:00:06 UTC
  • 1.46. C# operation of Windows file system

    C# allows you to manipulate directories and files using classes related to various directories and files, such as ...
    2023-10-12 23:00:07 UTC
  • 1.47. C# attribute

    An Attribute is a declarative tag used to pass behavior information about various elements in a program, such as class...
    2023-10-12 23:00:05 UTC
  • 1.48. C# reflection

    Reflection is the ability of a program to access, detect, and modify its ownstate or behavior. Assemblies con...
    2023-10-12 23:00:08 UTC
  • 1.49. C# property

    Properties are named members of classes, structures and interfaces. A member variable or method in a class or structur...
    2023-10-12 23:00:07 UTC
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.