连接到 Microsoft Dynamics 365/2016 Web-API

Question

我正在尝试执行以下 API 调用

RetrieveRecordChangeHistoryRequest

我正在尝试遵循 this steps，但我无法复制代码，我遇到了一堆错误。

我已成功安装 Dynamics 365 HelperCode，但开始管理代码时我不明白为什么它不起作用。 （我有 0 个 C# 经验）

using Microsoft.Crm.Sdk.Samples.HelperCode;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Net.Http;
using System.Net.Http.Headers;

private HttpClient httpClient;


private void ConnectToCRM(String[] cmdargs)
{
    Configuration config = null;
    if (cmdargs.Length > 0)
        config = new FileConfiguration(cmdargs[0]);
    else
        config = new FileConfiguration(null);
    Authentication auth = new Authentication(config);
    httpClient = new HttpClient(auth.ClientHandler, true);
    httpClient.BaseAddress = new Uri(config.ServiceUrl + "api/data/v8.1/");
    httpClient.Timeout = new TimeSpan(0, 2, 0);
    httpClient.DefaultRequestHeaders.Add("OData-MaxVersion", "4.0");
    httpClient.DefaultRequestHeaders.Add("OData-Version", "4.0");
    httpClient.DefaultRequestHeaders.Accept.Add(
        new MediaTypeWithQualityHeaderValue("application/json"));
}



Program app = new Program();
try
{
    String[] arguments = Environment.GetCommandLineArgs();
app.ConnectToCRM(arguments);
}
catch (System.Exception ex)
{ ; }
finally
{
    if (app.httpClient != null)
    { app.httpClient.Dispose(); }
}


private static void DisplayException(Exception ex)
{
    Console.WriteLine("The application terminated with an error.");
    Console.WriteLine(ex.Message);
    while (ex.InnerException != null)
    {
        Console.WriteLine("\t* {0}", ex.InnerException.Message);
        ex = ex.InnerException;
    }
}

错误

Answer 1

我猜你错过了重要的事情：按照说明进行操作。

在您提到的 MSDN link 中，这些是关键但基本的步骤。当您更换现成的 class 和 Main 方法时，虔诚地阅读并遵循它，这就是为什么要中断。

1.In the Solution Explorer, open Program.cs for editing.

&

1.Edit the Program.cs file.

2.Add the following property to the Program class.
This property will be initialized after a successful connection to a Dynamics 365 server.

private HttpClient httpClient;

3.In the Main method, add the following statements.

保持 class Program{} 和 static void Main() 不变。我建议您阅读有关 .net 和 c#

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