Google日历API的Google服务对象 [英] Google service object for Google Calendar API

问题描述

我试图在.NET中使用Google Calendar API，特别是我试图获取事件列表。根据此处的示例，使用不同的编程语言需要创建一个'服务'对象和一个'事件'对象。但是，我无法找到这些对象之一或者如何启动它们的明确解释。有没有人有解释？或者任何人都可以提供任何信息或给我一个链接到这里解释的地方？它不一定必须在.NET中。

以下是Java中的示例：

  String pageToken = null; 
 do {
 events = service.events（）。list（'primary'）。setPageToken（pageToken）.execute（）; 
列表< Event> items = events.getItems（）; 
 for（Event event：items）{
 System.out.println（event.getSummary（））; 
} 
 pageToken = events.getNextPageToken（）; 
 
} while（pageToken！= null）; 
  

遵循建议回答，我收到以下错误：

无法加载文件或程序集'Microsoft.Threading.Tasks.Extensions.Desktop，Version = 1.0.16.0，Culture = neutral，PublicKeyToken = b03f5f7f11d50a3a'或其某个依赖项。系统无法找到指定的文件。

以下是代码，错误发生在 credentials = Await上。 .. 行

  Dim凭证UserCredential 
 Dim clientSecretsPath As String = Server.MapPath （〜/ App_Data / client_secret.json）
 Dim作为IList（Of String）=新列表（字符串）（）
 scopes.Add（CalendarService.Scope.Calendar）
 
使用stream = New System.IO.FileStream（clientSecretsPath，System.IO.FileMode.Open，System.IO.FileAccess.Read）
 credential =等待GoogleWebAuthorizationBroker.AuthorizeAsync（GoogleClientSecrets.Load（stream））。秘密，范围，用户，CancellationToken.None）
结束使用
  

解决方案

请记住，此示例适用于Java。我的建议是执行以下操作：

1. 查看我们的VB示例中可用的Calendar API，其中 here


2. 您还应该在其他示例中查看C＃，比如任务API示例


3. 开始一个新项目并添加一个NuGet引用到 Google.Apis.Calednar.v3 。请记住它是预发布版本。


4. 您的代码应该如下所示：

在上面的两个示例中，我没有编译或测试它，但它应该可以工作。

  UserCredential凭证; 
 using（var stream = new System.IO.FileStream（client_secrets.json，
 System.IO.FileMode.Open，System.IO.FileAccess.Read））
 {
 credential = await GoogleWebAuthorizationBroker.AuthorizeAsync（
 GoogleClientSecrets.Load（stream）.Secrets，
 new [] {CalendarService.Scope.Calendar}，
user，CancellationToken.None）; 
} 
 
 //创建服务。 
 var service = new CalendarService（new BaseClientService.Initializer（）
 {
 HttpClientInitializer =凭证，
 ApplicationName =您的应用程序名称在这里，
}）; 
 
 var firstCalendar =（等待service.CalendarList.List（）.executeAsync（））。Items（）。FirstOrDefault（）; 
 if（firstCalendar！= null）
 {
 //获取第一个日历中的所有事件。 
 var calEvents = await service.Events.List（firstCalendar.Id）.ExecuteAsync（）; 
 //做某事
 var nextPage = calEvents.NextPage; 
 while（nextPage！= null）
 {
 var listRequest = service.Events.List（firstCalendar.Id）; 
 //设置页面令牌以获取下一个事件。 
 listRequest.PageToken = nextPage; 
 calEvents =等待listRequest.EsecuteAsync（）; 
 //做某事
 nextPage = calEvents.NextPage; 
} 
} 
  

I am trying to use the Google Calendar API in .NET, specifically I am trying to get a list of events. According to the examples here, in different programming languages I need to create a 'service' object and an 'event' object. However, I can't find a clear explanation of what either of these objects is or how to initiate them. Does anyone have an explanation? Or can anyone provide any information or give me a link to where this is explained? It doesn't necessarily have to be in .NET

Here is the example in Java:

String pageToken = null;
do {
   events = service.events().list('primary').setPageToken(pageToken).execute();
List<Event> items = events.getItems();
for (Event event : items) {
  System.out.println(event.getSummary());
}
pageToken = events.getNextPageToken();

} while (pageToken != null); 

Following the advice answered, I am getting the following error:

Could not load file or assembly 'Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.16.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

Here is the code, the error occurs on the credentials = Await... line

Dim credential As UserCredential
Dim clientSecretsPath As String = Server.MapPath("~/App_Data/client_secret.json")
Dim scopes As IList(Of String) = New List(Of String)()
    scopes.Add(CalendarService.Scope.Calendar)

Using stream = New System.IO.FileStream(clientSecretsPath, System.IO.FileMode.Open, System.IO.FileAccess.Read)
credential = Await GoogleWebAuthorizationBroker.AuthorizeAsync(GoogleClientSecrets.Load(stream).Secrets, scopes, "user", CancellationToken.None)
    End Using

解决方案

Remember that this sample is for Java. My recommendation is to do the following:

1. Take a look in our VB sample for the Calendar API which is available here
2. You should take a look also in other sample for C#, let's say Tasks API sample
3. Start a new project and add a NuGet reference to Google.Apis.Calednar.v3. Remember that it's prerelease version.
4. Your code should look like the following:

It's based on the 2 samples above, I didn't compile or test it but it should work.

  UserCredential credential;
  using (var stream = new System.IO.FileStream("client_secrets.json",
  System.IO.FileMode.Open, System.IO.FileAccess.Read))
  {
    credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
      GoogleClientSecrets.Load(stream).Secrets, 
      new[] { CalendarService.Scope.Calendar }, 
      "user", CancellationToken.None);
  }

  // Create the service.
  var service = new CalendarService(new BaseClientService.Initializer()
  {
     HttpClientInitializer = credential,
     ApplicationName = "YOUR APP NAME HERE",
  });     

  var firstCalendar = (await service.CalendarList.List().ExecuteAsync()).Items().FirstOrDefault();
  if (firstCalendar != null)
  {
     // Get all events from the first calendar.
     var calEvents = await service.Events.List(firstCalendar.Id).ExecuteAsync();
     // DO SOMETHING
     var nextPage = calEvents.NextPage;
     while (nextPage != null)
     {
       var listRequest = service.Events.List(firstCalendar.Id);
       // Set the page token for getting the next events.
       listRequest.PageToken = nextPage;
       calEvents = await listRequest.EsecuteAsync();
       // DO SOMETHING
       nextPage = calEvents.NextPage;
     }
  }

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