Retrieve Accesstoken for Azure DevOps REST API 5.1

In our app we want to retrieve an accesstoken. With this token we want to perform certain actions with Azure DevOps rest API 5.1.

I've tried the suggested documententation from Microsoft for OAuth2 (https://learn.microsoft.com/en-us/azure/devops/integrate/get-started/authentication/oauth?view=azure-devops) and PAT's. This always gives back a 203 response as an result. Does somebody know a workaround for this issue?

According to my test, we can call Azure DevOps rest API with Azure Ad access token. For more details, please refer to the following steps

1. Register an Azure AD application
   

2. Configure applications

   a. Create client secret

   b. Configure permissions

   

3. Get token

    # get code
   

GET https://login.microsoftonline.com/{tenant}/oauth2/authorize?
client_id=<your app client id>
&response_type=code
&redirect_uri=<>
&response_mode=query
&resource=499b84ac-1321-427f-aa17-267ca6975798
&state=12345

#Get token
Post https://login.microsoftonline.com/{tenant}/oauth2/token
Content-Type: application/x-www-form-urlencoded
grant_type=authorization_code
&client_id=<>
&code=<>
&redirect_uri=https%3A%2F%2Flocalhost%3A12345
&resource=499b84ac-1321-427f-aa17-267ca6975798
&client_secret=<>

4. Call Rest API
[![enter image description here][3]][3]


[1]: https://i.stack.imgur.com/waX3r.png
[2]: https://i.stack.imgur.com/29Rjk.png
[3]: https://i.stack.imgur.com/QbkQj.png

</details>



# 答案2
**得分**: 0

以下是已翻译的内容：

- 获取调用 API 的身份验证信息，请参考：[身份验证](https://learn.microsoft.com/en-us/rest/api/azure/devops/?view=azure-devops-rest-5.1#authenticate)

- 这是使用 OAuth2 与 ADAL 的示例：[OAuth2 示例](https://github.com/microsoft/azure-devops-auth-samples/blob/master/ManagedClientConsoleAppSample/Program.cs)

- 这是使用 PAT 的快速示例：

```csharp
 class Program
 {
 	public static string personalaccesstoken = "erxvtg*****6aljqa";
 	public static string organization = "jack0503";
 	public static string project = "keyvault";

 	static void Main(string[] args)
 	{
 		Console.ReadLine();
 		GetProjects();
 		Console.ReadLine();
 	}

 	public static async void GetProjects()
 	{
 		try
 		{
 			using (HttpClient client = new HttpClient())
 			{
 				client.DefaultRequestHeaders.Accept.Add(
 					new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

 				client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
 					Convert.ToBase64String(
 						System.Text.ASCIIEncoding.ASCII.GetBytes(
 							string.Format("{0}:{1}", "", personalaccesstoken))));

 				using (HttpResponseMessage response = await client.GetAsync(
 							$"https://dev.azure.com/{organization}/_apis/projects"))
 				{
 					response.EnsureSuccessStatusCode();
 					string responseBody = await response.Content.ReadAsStringAsync();
 					Console.WriteLine(responseBody);
 				}
 			}
 		}
 		catch (Exception ex)
 		{
 			Console.WriteLine(ex.ToString());
 		}
 	}
 }

请注意，上述代码中的双引号 " 已被保留，没有进行翻译。

	class Program
	{
		public static string personalaccesstoken = "erxvtg*****6aljqa";
		public static string organization = "jack0503";
		public static string project = "keyvault";

		static void Main(string[] args)
		{
			Console.ReadLine();
			GetProjects();
			Console.ReadLine();
		}


		public static async void GetProjects()
		{
			try
			{
				using (HttpClient client = new HttpClient())
				{
					client.DefaultRequestHeaders.Accept.Add(
						new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

					client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
						Convert.ToBase64String(
							System.Text.ASCIIEncoding.ASCII.GetBytes(
								string.Format("{0}:{1}", "", personalaccesstoken))));

					using (HttpResponseMessage response = await client.GetAsync(
								$"https://dev.azure.com/{organization}/_apis/projects"))
					{
						response.EnsureSuccessStatusCode();
						string responseBody = await response.Content.ReadAsStringAsync();
						Console.WriteLine(responseBody);
					}
				}
			}
			catch (Exception ex)
			{
				Console.WriteLine(ex.ToString());
			}
		}
	}