CODEWITHSUNDEEP
asp.netvisual-studio-2010web-servicesc#-4.0
garvit gupta
garvit gupta

Reputation: 51

How to call the web service form code behind

I have one web service which I want to call from my code behind page not from my source code. I google the topic but in most of the links I found that they called the web service from the source code by using ajax post

 $.ajax({
            type: "POST",
            url: "webservice.asmx/webservice",
            data: "{}",
            contentType: "application/json; charset=utf-8",
            cache: false,
            dataType: "json",
            success: function (result) {
            }
        });

But I don't want to use this approach I simply want to call the webservice from my code behing page. Any help?

Upvotes: 1

Views: 16222

Answers (2)

jekcom
jekcom

Reputation: 2095

You need to add Web Reference to your project.

Here is a step by step guide on how to consume a web service :

C#.Net How To: Consume a Web Service in C#.Net Visual Studio 2010

Upvotes: 2

oOZz
oOZz

Reputation: 677

You can use this code block.

public string CallWebMethod(string url, Dictionary<string, string> dicParameters)
{
    try
    {
        byte[] requestData = this.CreateHttpRequestData(dicParameters); 
        HttpWebRequest httpRequest = (HttpWebRequest)HttpWebRequest.Create(url);
        httpRequest.Method = "POST";
        httpRequest.KeepAlive = false;
        httpRequest.ContentType = "application/x-www-form-urlencoded";
        httpRequest.ContentLength = requestData.Length;
        httpRequest.Timeout = 30000;
        HttpWebResponse httpResponse = null;
        String response = String.Empty;

        httpRequest.GetRequestStream().Write(requestData, 0, requestData.Length);
        httpResponse = (HttpWebResponse)httpRequest.GetResponse();
        Stream baseStream = httpResponse.GetResponseStream();
        StreamReader responseStreamReader = new StreamReader(baseStream);
        response = responseStreamReader.ReadToEnd();
        responseStreamReader.Close();

        return response;
    }
    catch (Exception ex)
    {
        throw new Exception(ex.Message);
    }
}

private byte[] CreateHttpRequestData(Dictionary<string, string> dic)
{
    StringBuilder sbParameters = new StringBuilder();
    foreach (string param in dic.Keys)
    {
        sbParameters.Append(param);//key => parameter name
        sbParameters.Append('=');
        sbParameters.Append(dic[param]);//key value
        sbParameters.Append('&');
    }
    sbParameters.Remove(sbParameters.Length - 1, 1);

    UTF8Encoding encoding = new UTF8Encoding();

    return encoding.GetBytes(sbParameters.ToString());

}

Upvotes: 5

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