What's the correct way to send PARAMS when using HttpClient.SendAsync()?-CodePudding

I have an application that is using a remote API. That API requires that I send PARAMS before it will accept the request as valid. Currently I send x-www-form-urlencoded values through the Body of the API call.

WRONG WAY:

I want to NOT send it in the Body and instead send it as Params. I was just going to add it to the end of the URL to "fix it" and move on but, I feel like the is a better way to go about it maybe? Something that accounts for converting all the special characters to URL friendly characters (like the @ character to @).

CORRECT WAY:

Is there a proper way of adding the params to the request or do you just toss them on to the end of the Request URL (URL Endpoint)?

CodePudding user response：

From my experience I havent seen any built-in ways to handle query parameters other than to append values to the end of the request string.

If you need to ensure that the strings passed in are URL-friendly, just pass them through HttpUtlity.UrlEncode(string)

Example:

public async Task SendToApi(string param1, string param2)
{
    string requestUrl = HttpUtility.UrlEncode(
        $"https://your.api.com/api?x={param1}&y={param2}"
    )
    await _httpClient.SendAsync(requestUrl);
}

CodePudding user response：

If you're going to do this for multiple calls that have different query string parameters, you can do something like this:

private static string GetQueryString(object obj)
{
    var objectAsJsonString = JsonSerializer.Serialize(obj);
    var objectAsDictionary = JsonSerializer.Deserialize<IDictionary<string, object>>(objectAsJsonString);

    if (objectAsDictionary == null)
        throw new Exception($"Unable to deserialize json to query string. Json: {objectAsJsonString}");

    var objectAsListOfProperties = objectAsDictionary
        .Select(x => $"{GetUrlEncodedValue(x.Key)}={GetUrlEncodedValue(x.Value.ToString())}")
        .ToList();

    return string.Join("&", objectAsListOfProperties);
}

private static string GetUrlEncodedValue(object value)
{
    if (value is DateTime dt)
        return HttpUtility.UrlEncode(dt.ToString("O"));

    return HttpUtility.UrlEncode(value.ToString());
}