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C# – JSON value could not be converted to System.String

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When you send a request to ASP.NET with a JSON body, you get the following exception: System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $ | LineNumber: 0 | BytePositionInLine: 1. You can’t deserialize JSON to a string. You’re either using a string parameter with [FromBody] or your model has a string … Read more

C# – Handling redirects with HttpClient

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HttpClient handles redirects automatically. When you send a request, if the response contains a redirect status code (3xx) and redirect location, then it’ll send a new request to the redirect location. You can turn off this auto-redirect behavior by passing in an HttpClientHandler with AllowAutoRedirect=false. This prevents it from following redirects automatically, and allows you … Read more

C# – Configuring HttpClient connection keep-alive

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When you use a single instance of HttpClient to send requests, it keeps connections open in order to speed up future requests. By default, idle connections are closed after 2 minutes, and otherwise will be kept open forever (in theory). In reality, the connection can be closed by the server-side (or other external factors) regardless … Read more