ASP.NET 网页的 Twitter 帮助程序
重要
Twitter 帮助程序已过时。 有关 Twitter 网站的最新参与工具，请参阅 Twitter 网站概述。
本主题和应用程序演示如何将 Twitter 帮助程序添加到 WebMatrix 3 项目。 它包含 Twitter 帮助程序代码，并演示如何调用帮助程序方法。
Twitter.cshtml 文件的此代码由 Microsoft 的 Tian Pan 开发。
本教程中使用的软件版本
- ASP.NET 网页 (Razor) 3
本教程也适用于 ASP.NET 网页 2。
简介
本主题演示如何将 Twitter 帮助程序添加到应用程序，并使用 Razor 语法调用帮助程序方法。 借助 Twitter 帮助程序，可以轻松地在应用程序中合并 Twitter 按钮和小组件。 若要使用 Twitter 小组件（例如用户的时间线或井号标签的搜索结果），必须先在 Twitter 上创建小组件。 创建小组件后，将收到小组件 ID。调用显示小组件的帮助程序方法时，将此小组件 ID 作为参数传递。
本主题针对 1.1 版 Twitter API 编写。 通过将 Twitter 帮助程序代码直接添加到项目，可以在 Twitter API 更改时更新帮助程序代码。
有关安装 WebMatrix 的信息，请参阅 ASP.NET 网页 2 - 入门简介。
将 Twitter 帮助程序添加到项目
若要添加 Twitter 帮助程序，请先将名为 App_Code 的文件夹添加到项目中。 然后，创建名为 Twitter.cshtml 的文件。
将 Twitter.cshtml 中的默认代码替换为以下代码。
@* This Twitter helper is compatible with version 1.1 of the Twitter API. *@
@using System.Globalization
@* For more about the twitter follow button, please visit
https://dev.twitter.com/docs/follow-button *@
@helper FollowButton(
string userName,
bool showCount = false,
bool showUserName = true,
bool largeButton = false,
bool optOutOfTailoring = false,
string language = "",
bool alignLeft = true)
{
var showCountAttribute = new HtmlString(showCount ? "" : "data-show-count=\"false\"");
var showUserNameAttribute = new HtmlString(showUserName ? "" : "data-show-screen-name=\"false\"");
var largeButtonAttribute = new HtmlString(largeButton ? "data-size=\"large\"" : "");
var optOutOfTailoringAttribute = new HtmlString(optOutOfTailoring ? "data-dnt=\"true\"" : "");
var languageAttribute = new HtmlString(!language.IsEmpty() && !language.Equals("en", StringComparison.OrdinalIgnoreCase) ? String.Format(CultureInfo.InvariantCulture, " data-lang=\"" + HttpUtility.HtmlAttributeEncode(language) + "\"") : "");
var alignAttribute = new HtmlString(alignLeft ? "" : "data-align=\"right\"");
<a href="https://twitter.com/@HttpUtility.UrlEncode(userName)" class="twitter-follow-button" @showCountAttribute @showUserNameAttribute @largeButtonAttribute @optOutOfTailoringAttribute @languageAttribute @alignAttribute>Follow @@@userName)</a>
<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + '://platform.twitter.com/widgets.js'; fjs.parentNode.insertBefore(js, fjs); } }(document, 'script', 'twitter-wjs');</script>
}
@* For more about the tweet button, please visit https://dev.twitter.com/docs/tweet-button *@
@helper TweetButton(string url = "",
string tweetText = "",
bool showCount = true,
string via = "",
string recommend = "",
string hashtag = "",
bool largeButton = false,
bool optOutOfTailoring = false,
string language = "")
{
var urlAttribute = new HtmlString(url.IsEmpty() ? "" : String.Format(CultureInfo.InvariantCulture, " data-url=\"" + HttpUtility.HtmlAttributeEncode(url) + "\""));
var tweetTextAttribute = new HtmlString(tweetText.IsEmpty() ? "" : "data-text=\"" + HttpUtility.HtmlAttributeEncode(tweetText) + "\"");
var showCountAttribute = new HtmlString(showCount ? "" : "data-show-count=\"false\"");
var viaAttribute = new HtmlString(via.IsEmpty() ? "" : "data-via=\"" + HttpUtility.HtmlAttributeEncode(via) + "\"");
var recommendAttribute = new HtmlString(recommend.IsEmpty() ? "" : "data-related=\"" + HttpUtility.HtmlAttributeEncode(recommend) + "\"");
var hashtagAttribute = new HtmlString(hashtag.IsEmpty() ? "" : "data-hashtags=\"" + HttpUtility.HtmlAttributeEncode(hashtag) + "\"");
var largeButtonAttribute = new HtmlString(largeButton ? "data-size=\"large\"" : "");
var optOutOfTailoringAttribute = new HtmlString(optOutOfTailoring ? "data-dnt=\"true\"" : "");
var languageAttribute = new HtmlString(!language.IsEmpty() && !language.Equals("en", StringComparison.OrdinalIgnoreCase) ? String.Format(CultureInfo.InvariantCulture, " data-lang=\"{0}\"", HttpUtility.HtmlAttributeEncode(language)) : "");
<a href="https://twitter.com/share" class="twitter-share-button" @urlAttribute @tweetTextAttribute @showCountAttribute @viaAttribute @recommendAttribute @hashtagAttribute @largeButtonAttribute @optOutOfTailoringAttribute @languageAttribute>Tweet</a>
<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + '://platform.twitter.com/widgets.js'; fjs.parentNode.insertBefore(js, fjs); } }(document, 'script', 'twitter-wjs');</script>
}
@helper TimeLine(string userName,
string widgetId,
string theme = "",
string linkColor = "",
string language = "",
int? tweetLimit = null,
string relatedUsers = "",
string ariaPolite = "",
int? width = null,
int? height = null,
string title = "Tweets")
{
var themeAttribute = new HtmlString(theme.IsEmpty() ? "" : "data-theme=\"" + theme + "\"");
var linkColorAttribute = new HtmlString(linkColor.IsEmpty() ? "" : "data-link-color=\"" + linkColor + "\"");
var languageAttribute = new HtmlString(!language.IsEmpty() && !language.Equals("en", StringComparison.OrdinalIgnoreCase) ? String.Format(CultureInfo.InvariantCulture, " data-lang=\"{0}\"", HttpUtility.HtmlAttributeEncode(language)) : "");
var relatedUsersAttribute = new HtmlString(relatedUsers.IsEmpty() ? "" : "data-related=\"" + relatedUsers + "\"");
var ariaPoliteAttribute = new HtmlString(ariaPolite.IsEmpty() ? "" : "data-aria-polite=\"" + ariaPolite + "\"");
<a class="twitter-timeline" href="https://twitter.com/@userName" width="@width.ToString()" height="@height.ToString()" data-widget-id="@HttpUtility.HtmlEncode(widgetId)" @themeAttribute @linkColorAttribute @languageAttribute data-tweet-limit="@tweetLimit.ToString()" @relatedUsersAttribute @ariaPoliteAttribute>@title</a>
<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + "://platform.twitter.com/widgets.js"; fjs.parentNode.insertBefore(js, fjs); } }(document, "script", "twitter-wjs");</script>
}
@helper Profile(string userName,
string widgetId,
string theme = "",
string linkColor = "",
string language = "",
int? tweetLimit = null,
string relatedUsers = "",
string ariaPolite = "",
int? width = null,
int? height = null)
{
@Twitter.TimeLine(userName, widgetId, theme, linkColor, language, tweetLimit, relatedUsers, ariaPolite, width, height, "Tweets by @" + HttpUtility.HtmlEncode(userName));
}
@helper Faves(string userName,
string widgetId,
string theme = "",
string linkColor = "",
string language = "",
int? tweetLimit = null,
string relatedUsers = "",
string ariaPolite = "",
int? width = null,
int? height = null)
{
@Twitter.TimeLine(userName + "/favorites", widgetId, theme, linkColor, language, tweetLimit, relatedUsers, ariaPolite, width, height, "Favorite Tweets by @" + HttpUtility.HtmlEncode(userName));
}
@helper List(string userName,
string list,
string widgetId,
string theme = "",
string linkColor = "",
string language = "",
int? tweetLimit = null,
string relatedUsers = "",
string ariaPolite = "",
int? width = null,
int? height = null)
{
@Twitter.TimeLine(userName + "/" + list, widgetId, theme, linkColor, language, tweetLimit, relatedUsers, ariaPolite, width, height, "Tweets from @" + HttpUtility.HtmlEncode(userName) + "/" + HttpUtility.HtmlEncode(list));
}
@helper Search(string query,
string widgetId,
string theme = "",
string linkColor = "",
string language = "",
int? tweetLimit = null,
string relatedUsers = "",
string ariaPolite = "",
int? width = null,
int? height = null)
{
@Twitter.TimeLine("search?q=" + HttpUtility.UrlEncode(query), widgetId, theme, linkColor, language, tweetLimit, relatedUsers, ariaPolite, width, height, "Tweets about \"" + HttpUtility.HtmlEncode(query) + "\"");
}
从网页调用 Twitter 方法
以下示例演示如何从项目中的页面使用 Twitter 帮助程序方法。 在项目中，需要将参数值替换为与需求相关的值。 可以使用提供的小组件 ID 来探索方法的工作原理，但需要为项目生成自己的小组件。
并非需要下面显示的所有参数。 可选参数用于自定义按钮或小组件的显示方式。 例如，“关注”按钮只需要关注用户名，但该示例显示如何包括关注者的数量，以及如何指定按钮的大小和语言。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Show the Twitter Helper</title>
</head>
<body>
<h1>Twitter Buttons and Widgets</h1>
<h2>1. Follow Button</h2>
<p>@Twitter.FollowButton(userName: "aspnet", showCount: true, largeButton: false, language: "es")</p>
<h2>2. Tweet Button</h2>
<p>@Twitter.TweetButton(url: "http://www.asp.net/mvc", largeButton: true, hashtag: "awesome")</p>
<h2>3. User Timeline (Profile)</h2>
<p>@Twitter.Profile("aspnet", "370310677673422848")</p>
<h2>4. Favorites</h2>
<p>@Twitter.Faves("Microsoft", "372486349795753984")</p>
<h2>5. List</h2>
<p>@Twitter.List("MS_Consumer_Bands", "Microsoft", "372485258974748672")</p>
<h2>6. Search</h2>
<p>@Twitter.Search("#asp.net", "370310477957435392")</p>
</body>
</html>
查看结果
上述代码生成以下按钮和小组件。 这些按钮和小组件功能齐全，而不是屏幕截图。 “关注按钮”以西班牙语显示，因为语言参数已设置为 es。
“关注”按钮
Follow @aspnet)<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + '://platform.twitter.com/widgets.js'; fjs.parentNode.insertBefore(js, fjs); } }(document, 'script', 'twitter-wjs');</script>
推文按钮
鸣叫<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + '://platform.twitter.com/widgets.js'; fjs.parentNode.insertBefore(js, fjs); } }(document, 'script', 'twitter-wjs');</script>
用户时间线 (配置文件)
Tweets by @aspnet<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + "://platform.twitter.com/widgets.js"; fjs.parentNode.insertBefore(js, fjs); } }(document, "script", "twitter-wjs");</script>
收藏夹
Favorite Tweets by Microsoft<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + "://platform.twitter.com/widgets.js"; fjs.parentNode.insertBefore(js, fjs); } }(document, "script", "twitter-wjs");</script>
列出
Tweets from @Microsoft/MS\_Consumer\_Bands<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + "://platform.twitter.com/widgets.js"; fjs.parentNode.insertBefore(js, fjs); } }(document, "script", "twitter-wjs");</script>
搜索
有关“#asp.net”的推文<script>!function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0], p = /^http:/.test(d.location) ? 'http' : 'https'; if (!d.getElementById(id)) { js = d.createElement(s); js.id = id; js.src = p + "://platform.twitter.com/widgets.js"; fjs.parentNode.insertBefore(js, fjs); } }(document, "script", "twitter-wjs");</script>