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Is there a way to detect the network speed and bandwidth usage in C#? Even pointers to open-source components are welcome.
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A speed test can be run to see if an ISP is throttling bandwidth. Speed tests measure the speed between a device and a test server using a device's internet connection. ISPs offer speed tests on their own websites, and independent tests are also available from services such as Speedtest.
Open Start. Search for Command Prompt and click the top result to open the console. Type the following command to determine the connection speed for all the Ethernet and Wi-Fi adapters and press Enter: wmic nic where netEnabled=true get name, speed.
Your internet speed is based on the amount of time your internet connection can download and upload data (bits). This speed is measured in megabits per second (Mbps) and gigabits per second (Gbps)—one Mbps is 1,000,000 bits being transferred per second, and one Gbps is 1,000,000,000 bits being transferred per second.
Bandwidth and throughput both indicate network performance. The terms are often used together, but bandwidth refers to capacity, while throughput details how much data actually transmits. Bandwidth and throughput are two terms related to network performance.
Try using the System.Net.NetworkInformation classes. In particular, System.Net.NetworkInformation.IPv4InterfaceStatistics ought to have some information along the lines of what you're looking for.
Specifically, you can check the bytesReceived property, wait a given interval, and then check the bytesReceived property again to get an idea of how many bytes/second your connection is processing. To get a good number, though, you should try to download a large block of information from a given source, and check then; that way you should be 'maxing' the connection when you do the test, which should give more helpful numbers.
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