make a http patch request in csharp

Here's an example of how to make a HTTP Patch request in C# using the HttpClient class:

main.cs
using System.Net.Http;
using System.Threading.Tasks;

public async Task PatchRequestAsync(string url, string requestBody)
{
    using (var client = new HttpClient())
    {
        var method = new HttpMethod("PATCH");
        var request = new HttpRequestMessage(method, url);
        request.Content = new StringContent(requestBody, Encoding.UTF8, "application/json");

        var response = await client.SendAsync(request);
        var responseString = await response.Content.ReadAsStringAsync();
    }
}
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In this example, we're creating an instance of HttpClient, and then constructing an HttpRequestMessage with a PATCH HttpMethod and the request URL. We're also setting the request body with the content we want to send.

Then, we use the SendAsync method of the HttpClient to send the request, and await for the response. Finally, we can read the response content as a string.

Note that in the example above, we're using the "application/json" media type for the request body, but you can use any other content type that suits your needs.