An Example of calling the AdHoc reporting of the Google Adwords API v201109

GoogleAdwordsAdhocReportingv201109Example.cs

using System;
using System.IO;
using System.Net;
using System.Text;
using System.Web;

        /// <summary>
        /// Here is an example of calling the AdHoc reporting of the Google Adwords API v201109
        /// </summary>
        public void GoogleAdwordsv201109_Adhoc_reports_CSharp_Example()
        {
            string URL = "https://adwords.google.com/api/adwords/reportdownload/v201109";

            string authToken = "your_auth_token";
            string clientId = "your_client_id";
            string fileName = "your_file_name";

            var request = WebRequest.Create(URL) as HttpWebRequest;
            request.ContentType = "application/x-www-form-urlencoded";
            request.Method = "POST";
            request.Headers.Add("Authorization",
                                string.Format("GoogleLogin auth={0}", authToken));
            request.Headers.Add("clientCustomerId", clientId);

            string xml =
                @"<reportDefinition>
                      <selector>
                        <fields>Date</fields>
                        <fields>CampaignId</fields>
                        <fields>Id</fields>
                        <fields>HourOfDay</fields>
                        <fields>Impressions</fields>
                        <fields>Clicks</fields>
                        <fields>Cost</fields>
                        <dateRange>
                          <min>20111001</min>
                          <max>20111031</max>
                        </dateRange>
                      </selector>
                      <reportName>Test Report</reportName>
                      <reportType>ADGROUP_PERFORMANCE_REPORT</reportType>
                      <dateRangeType>CUSTOM_DATE</dateRangeType>
                      <downloadFormat>CSV</downloadFormat>
                    </reportDefinition>";

            using (var sw = new StreamWriter(request.GetRequestStream()))
            {
                sw.Write("__rdxml=" +  HttpUtility.UrlEncode(xml));
            }

            using (var httpWebResponse = request.GetResponse() as HttpWebResponse)
            {
                if (httpWebResponse.StatusCode == HttpStatusCode.OK)
                {
                    using (Stream stream = httpWebResponse.GetResponseStream())
                    {
                        using (FileStream fileStream = File.Create(string.Format("{0}.csv", fileName)))
                        {
                            stream.CopyTo(fileStream);
                        }
                    }
                }
            }
        }