{"id":32197,"date":"2016-02-04T15:53:28","date_gmt":"2016-02-04T10:23:28","guid":{"rendered":"https:\/\/tothenewco.pro\/blog\/?p=32197"},"modified":"2016-02-09T11:07:53","modified_gmt":"2016-02-09T05:37:53","slug":"integrate-twitter-api-in-asp-net","status":"publish","type":"post","link":"https:\/\/tothenewco.pro\/blog\/integrate-twitter-api-in-asp-net\/","title":{"rendered":"Integrate Twitter API in Asp.net"},"content":{"rendered":"

Introduction<\/strong><\/p>\n

In this Blog I will explain how to integrate Twitter API\u00a0with C# Asp.net.<\/p>\n

Before Going to start twitter API integration we should do\u00a0following\u00a0steps:<\/strong><\/p>\n

– You should have twitter account.<\/p>\n

1)<\/strong> Authorize your account in twitter and open\u00a0https:\/\/apps.twitter.com\/,create new app button<\/p>\n

\"twitter_1\"<\/p>\n

2)<\/strong> Provide application name should be unique, description and website URL can be dummy:<\/p>\n

\"Twitter_2\"<\/p>\n

3)<\/strong> Scroll bottom, accept checkbox and click create your twitter application<\/p>\n

\"Twitter_3\"<\/p>\n

4)<\/strong> Your app created, go keys and access tokens tab<\/p>\n

\"Twitter_4\"<\/p>\n

5)<\/strong> Copy the API key and API secret to clipboard<\/p>\n

\"Twitter_5\"<\/p>\n

6)<\/strong> Paste them to notepad in this form<\/p>\n

\"Twitter_6\"<\/p>\n

This string should be base64-encoded I using\u00a0https:\/\/www.base64encode.org\/\u00a0with UTF-8<\/p>\n

Encoded string:<\/p>\n

\"Twitter_7\"<\/p>\n

Encoded string is credentials to get bearer access token for application. Access token should be get programmatically on every application run and should not store anywhere<\/p>\n

Using the Code in ASP.NET<\/h2>\n

Note:-<\/strong> Do not forgot twitter anywhere supports https requests only not http.<\/p>\n

To get bearer access token send http post request and pass credentials to Authorization header<\/p>\n

string\u00a0credentials =”bDZuekx3cVNCTTV3Y3hNYTE4WTY5Vlh6WTpzMXJ3UTNxb1pZWGl3TzJCWUpsT25LSG5aSlZCU09nQUdLOVpQblRjSHdPMnJ5MXhhRA==”;<\/p>\n

string access_token = “”;<\/p>\n

var post = WebRequest.Create(“https:\/\/api.twitter.com\/oauth2\/token”) as HttpWebRequest;<\/p>\n

post.Method = “POST”;<\/p>\n

post.ContentType = “application\/x-www-form-urlencoded”;<\/p>\n

post.Headers[HttpRequestHeader.Authorization] = “Basic ” + credentials;<\/p>\n

var reqbody = Encoding.UTF8.GetBytes(“grant_type=client_credentials”);<\/p>\n

post.ContentLength = reqbody.Length;<\/p>\n

using (var req = post.GetRequestStream())<\/p>\n

{<\/p>\n

req.Write(reqbody, 0, reqbody.Length);<\/p>\n

}<\/p>\n

try<\/p>\n

{<\/p>\n

string respbody = null;<\/p>\n

using (var resp = post.GetResponse().GetResponseStream())\/\/there request sends<\/p>\n

{<\/p>\n

var respR = new StreamReader(resp);<\/p>\n

respbody = respR.ReadToEnd();<\/p>\n

}<\/p>\n

 <\/p>\n

\/\/TODO use a library to parse json<\/p>\n

access_token = respbody.Substring(respbody.IndexOf(“access_token\\”:\\””) + “access_token\\”:\\””.Length, respbody.IndexOf(“\\”}”) – (respbody.IndexOf(“access_token\\”:\\””) + “access_token\\”:\\””.Length));<\/p>\n

}<\/p>\n

catch \/\/if credentials are not valid (403 error)<\/p>\n

{<\/p>\n

\/\/TODO<\/p>\n

}<\/p>\n

\/\/rest api using<\/p>\n

var gettimeline = WebRequest.Create(“https:\/\/api.twitter.com\/1.1\/statuses\/user_timeline.json?count=3&screen_name=twitterapi”) as HttpWebRequest;<\/p>\n

gettimeline.Method = “GET”;<\/p>\n

gettimeline.Headers[HttpRequestHeader.Authorization] = “Bearer ” + access_token;<\/p>\n

try<\/p>\n

{<\/p>\n

string respbody = null;<\/p>\n

using (var resp = gettimeline.GetResponse().GetResponseStream())\/\/there request sends<\/p>\n

{<\/p>\n

var respR = new StreamReader(resp);<\/p>\n

respbody = respR.ReadToEnd();<\/p>\n

}<\/p>\n

\/\/TODO use a library to parse json<\/p>\n

Response.Write(respbody);<\/p>\n

}<\/p>\n

catch \/\/401 (access token invalid or expired)<\/p>\n

{<\/p>\n

\/\/TODO<\/p>\n

}<\/p>\n

\/\/invalidating un necessary access token<\/p>\n

var inv = WebRequest.Create(“https:\/\/api.twitter.com\/oauth2\/invalidate_token”) as HttpWebRequest;<\/p>\n

inv.Method = “POST”;<\/p>\n

inv.ContentType = “application\/x-www-form-urlencoded”;<\/p>\n

inv.Headers[HttpRequestHeader.Authorization] = “Basic ” + credentials;<\/p>\n

var reqbodyinv = Encoding.UTF8.GetBytes(“access_token=” + access_token);<\/p>\n

inv.ContentLength = reqbodyinv.Length;<\/p>\n

using (var req = inv.GetRequestStream())<\/p>\n

{<\/p>\n

req.Write(reqbodyinv, 0, reqbodyinv.Length);<\/p>\n

}<\/p>\n

try<\/p>\n

{<\/p>\n

post.GetResponse();<\/p>\n

}<\/p>\n

catch \/\/token not invalidated<\/p>\n

{<\/p>\n

\/\/TODO<\/p>\n

}<\/p>\n

Results<\/p>\n

\"Twitter_8\"<\/p>\n

In addition you can read more about\u00a0ASP.NET web forms application<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Introduction In this Blog I will explain how to integrate Twitter API\u00a0with C# Asp.net. Before Going to start twitter API integration we should do\u00a0following\u00a0steps: – You should have twitter account. 1) Authorize your account in twitter and open\u00a0https:\/\/apps.twitter.com\/,create new app button 2) Provide application name should be unique, description and website URL can be dummy: […]<\/p>\n","protected":false},"author":855,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":7,"footnotes":""},"categories":[1],"tags":[1440,1018,3088,3087,3086],"class_list":["post-32197","post","type-post","status-publish","format-standard","hentry","category-technology","tag-asp-net","tag-twitter-api","tag-twitter-api-asp-net","tag-twitter-api-with-c","tag-twitter-api-with-casp-net"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t