Purpose[ edit ] Just as a graphical user interface GUI makes it easier for people to use programs, application programming interfaces make it easier for developers to use certain technologies in building applications.
It describes various API operations, related request and response structures, and error codes. Read the following about authentication and access control before going to specific API topics.
Requests to Amazon S3 can be authenticated or anonymous. Authenticated access requires credentials that AWS can use to authenticate your requests. When making REST API calls directly from your code, you create a signature using valid credentials and include the signature in your request.
It requires you to write the necessary code to calculate a valid signature to authenticate your requests.
We recommend the following alternatives instead: With this option, you don't need to write code to calculate a signature for request authentication because the SDK clients authenticate your requests by using access keys that you provide. You can have valid credentials to authenticate your requests, but unless you have permissions you cannot create or access Amazon S3 resources.
For example, you must have permissions to create an S3 bucket or get an object from your bucket. If you use root credentials of your AWS account, you have all the permissions.
However, using root credentials is not recommended. Instead, we recommend that you create IAM users in your account and manage user permissions.
Read Write Excel files in C# tutorial shows how to write to and read from Excel file from your application using Speadsheet grupobittia.com sample C# source codes below for Excel writing and reading. Read Excel file in C# with the help of the code below.
Write to Excel file from your application. Device Portal core API reference.
03/22/; 42 minutes to read Contributors. all; In this article. All Device Portal functionality is built on REST APIs that developers can call directly to access resources and control their devices programmatically.
How to create an APi in C#? [closed] Ask Question.
The basic process is that I have a C# code where I'm reading an XML file and obtaining the attributes and values that are between the tags.
I achieved that and now I have to create consumable API for the same functionality. At best, you write two projects when developing your API.
Before starting to code, it is important to understand how the API you are working with handles important issues so that you can implement a complete and coherent R client for the API.
The key features of any API are the structure of the requests and the structure of . With the release of Google Play services we're excited to announce that we've added new Mobile Vision APIs which provide bar code detection APIs that read and decode a myriad of different bar code types, quickly, easily and locally.