How to make an HTTP get request with parameters


C# Problem Overview

Is it possible to pass parameters with an HTTP get request? If so, how should I then do it? I have found an HTTP post requst (link). In that example the string postData is sent to a webserver. I would like to do the same using get instead. Google found this example on HTTP get here. However no parameters are sent to the web server.

C# Solutions

Solution 1 - C#

My preferred way is this. It handles the escaping and parsing for you.

WebClient webClient = new WebClient();
webClient.QueryString.Add("param1", "value1");
webClient.QueryString.Add("param2", "value2");
string result = webClient.DownloadString("");

Solution 2 - C#

First WebClient is easier to use; GET arguments are specified on the query-string - the only trick is to remember to escape any values:

        string address = string.Format(
            Uri.EscapeDataString("escape me"),
            Uri.EscapeDataString("& me !!"));
        string text;
        using (WebClient client = new WebClient())
            text = client.DownloadString(address);

Solution 3 - C#

In a GET request, you pass parameters as part of the query string.

string url = "";

Solution 4 - C#

The WebRequest object seems like too much work for me. I prefer to use the WebClient control.

To use this function you just need to create two NameValueCollections holding your parameters and request headers.

Consider the following function:

    private static string DoGET(string URL,NameValueCollection QueryStringParameters = null, NameValueCollection RequestHeaders = null)
        string ResponseText = null;
        using (WebClient client = new WebClient())
                if (RequestHeaders != null)
                    if (RequestHeaders.Count > 0)
                        foreach (string header in RequestHeaders.AllKeys)
                            client.Headers.Add(header, RequestHeaders[header]);
                if (QueryStringParameters != null)
                    if (QueryStringParameters.Count > 0)
                        foreach (string parm in QueryStringParameters.AllKeys)
                            client.QueryString.Add(parm, QueryStringParameters[parm]);
                byte[] ResponseBytes = client.DownloadData(URL);
                ResponseText = Encoding.UTF8.GetString(ResponseBytes);
            catch (WebException exception)
                if (exception.Response != null)
                    var responseStream = exception.Response.GetResponseStream();

                    if (responseStream != null)
                        using (var reader = new StreamReader(responseStream))
        return ResponseText;

Add your querystring parameters (if required) as a NameValueCollection like so.

        NameValueCollection QueryStringParameters = new NameValueCollection();
        QueryStringParameters.Add("id", "123");
        QueryStringParameters.Add("category", "A");

Add your http headers (if required) as a NameValueCollection like so.

        NameValueCollection RequestHttpHeaders = new NameValueCollection();
        RequestHttpHeaders.Add("Authorization", "Basic bGF3c2912XBANzg5ITppc2ltCzEF");

Solution 5 - C#

You can also pass value directly via URL.

If you want to call method public static void calling(string name){....}

then you should call usingHttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create("http://localhost:****/Report/calling?name=Priya); webrequest.Method = "GET"; webrequest.ContentType = "application/text";

Just make sure you are using ?Object = value in URL

Solution 6 - C#

GET request with multiple params:

> curl --request GET --url > http://localhost:8080/todos/**?limit=10\&offset=2** --header > 'content-type:application/json'


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Solution 1 - C#wisbuckyView Answer on Stackoverflow
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Solution 4 - C#CesarView Answer on Stackoverflow
Solution 5 - C#PriyankaView Answer on Stackoverflow
Solution 6 - C#AlexPesView Answer on Stackoverflow