创建新迭代时出错 'Value cannot be null:nodeName'

Question

尝试使用客户端 SDK 创建新迭代时出现错误：

Value cannot be null. Parameter name: nodeName

作为测试，我尝试使用 Postman 和 REST 创建它 API——按照建议 ——它成功了。

我已经成功地使用它很长一段时间了，以消除我这一年的冲刺层次结构。这是第一次出现这种错误——过去的一年运行已经顺利完成。自从去年成功运行.

以来，我没有改变任何东西（据我所知）

如我们所见，迭代的 Name 属性已正确设置。我尝试 Overloads 而不是 Shadows，但这没有帮助。

如何解决此问题以找出 nodeName 是什么以及如何使用客户端 SDK 填充它？

这是我的代码：

Module Main()
  Private Sub AddYear(Year As Integer, Client As WorkItemTrackingHttpClient)
    Dim oIterationYear As Classifications.Iteration
    Dim dFinishDate As Date
    Dim dStartDate As Date

    Console.WriteLine($"Year:{vbTab}{vbTab}{Year}")

    dFinishDate = New Date(Year, 12, 31)
    dStartDate = New Date(Year, 1, 1)

    oIterationYear = New Classifications.Iteration(Client, TeamProject, Year, dStartDate, dFinishDate)
    oIterationYear.Save()

    ...

  End Sub
End Module

Public Class Iteration
  Inherits Base

  Public Sub New(Client As WorkItemTrackingHttpClient, TeamProject As TeamProjects, Name As String, StartDate As Date, FinishDate As Date)
    Me.New(Client, TeamProject, Name, StartDate, FinishDate, Nothing)
  End Sub

  Public Sub New(Client As WorkItemTrackingHttpClient, TeamProject As TeamProjects, Name As String, StartDate As Date, FinishDate As Date, Parent As Iteration)
    MyBase.New(Client, TeamProject, Parent)

    Me.StructureType = TreeNodeStructureType.Iteration
    Me.FinishDate = FinishDate
    Me.StartDate = StartDate
    Me.Name = Name
  End Sub

  ...

End Class

Public MustInherit Class Base
  Inherits WorkItemClassificationNode

  Public Sub New(Client As WorkItemTrackingHttpClient, TeamProject As TeamProjects, Parent As Base)
    Me.ProjectName = TeamProject.ToDescription
    Me.Parent = Parent
    Me.Client = Client
  End Sub

  Public Sub Save()
    If Me.Parent.IsNothing Then
      Me.Node = Me.Client.CreateOrUpdateClassificationNodeAsync(Me, Me.ProjectName, Me.StructureType).Result <-- Error
    Else
      Me.Node = Me.Client.CreateOrUpdateClassificationNodeAsync(Me, Me.ProjectName, Me.StructureType, path:=Me.Path).Result
    End If
  End Sub

  ...

  Public Shadows Property Name As String
    Get
      If Me.Node.IsNothing Then
        Name = Me._Name
      Else
        Name = Me.Node.Name
      End If
    End Get
    Set(Value As String)
      Me._Name = Value
    End Set
  End Property
  Private _Name As String
End Class

注意：这是一个与语言无关的问题，因此我有意省略了 VB.NET 标签。 VB.NET 或 C# 均可提供答案——我对其中任何一个都满意。

-- 编辑--

根据已接受答案中的设计建议，我想出了这个有效的解决方案：

Public MustInherit Class Base
  Public Sub New(Client As WorkItemTrackingHttpClient, TeamProject As TeamProjects, Parent As Base)
    Me.Node = New WorkItemClassificationNode With {
      .StructureType = StructureType,
      .Name = Name
    }

    Me.ProjectName = TeamProject.ToDescription
    Me.Parent = Parent
    Me.Client = Client
    Me.Name = Name
  End Sub

  Public Sub Save()
    If Me.Parent.IsNothing Then
      Me.Node = Me.Client.CreateOrUpdateClassificationNodeAsync(Me.Node, Me.ProjectName, Me.StructureType).Result
    Else
      Me.Node = Me.Client.CreateOrUpdateClassificationNodeAsync(Me.Node, Me.ProjectName, Me.StructureType, path:=Me.Path).Result
    End If
  End Sub

  ...

  Public Property Name As String
    Get
      Return Me.Node.Name
    End Get
    Private Set(Value As String)
      Me.Node.Name = Value
    End Set
  End Property
End Class

基本上我所做的就是从 WorkItemClassificationNode 中删除基础 class' 继承并在所有情况下在内部存储节点引用。我还简化了 Name 属性实现。

至于为什么它突然停止工作而我的代码没有任何变化，我唯一能想到的是编译器发生变化的可能性很小，影响了 SDK 如何评估 Shadows和 Overloads 个关键字。我知道这是不可能的，但除此之外我完全不知所措。

最重要的是，它现在有效了。

Answer 1

我可以在 Azure DevOps Services .NET SDK 中使用 Microsoft.TeamFoundation.WorkItemTracking.WebApi 创建新的迭代。

请查看以下示例：

 class Program
    {
        static void Main(string[] args)
        {
           
            Uri accountUri = new Uri("https://dev.azure.com/org/");
            string personalAccessToken = "pat";
           
            VssConnection _connection = new VssConnection(accountUri, new VssBasicCredential(string.Empty, personalAccessToken));
            WorkItemTrackingHttpClient workItemTrackingHttpClient = _connection.GetClient<WorkItemTrackingHttpClient>();

            Iteration iteration = new Iteration(workItemTrackingHttpClient,2021, "projectName");
            iteration.SaveNode();
        }
          
    }

public class Iteration
    {
        WorkItemTrackingHttpClient client;
        WorkItemClassificationNode node;
        string project;
        string path;
        public Iteration(WorkItemTrackingHttpClient client, int Year, string project, string path=null) {
            this.client = client;
            node = new WorkItemClassificationNode();
            this.project = project;
            this.path = path;
            IDictionary<string, object> DateAttr = new Dictionary<string, object>();
            DateAttr.Add("startDate", new DateTime(Year, 1, 1));
            DateAttr.Add("finishDate", new DateTime(Year, 12, 31));
            node.Attributes = DateAttr;
            node.Name = Year.ToString();
            node.StructureType = TreeNodeStructureType.Iteration;

        }

        public void SaveNode()
        {
            var res = client.CreateOrUpdateClassificationNodeAsync(node, project, TreeStructureGroup.Iterations, path).Result;
            Console.WriteLine(res.Id);
        }
    }

查看以下结果：

我可以重现上面的错误Value cannot be null. Parameter name: nodeName。如果我故意不设置 node.Name = null；您可以调试代码以检查未设置节点名称的原因。

创建新迭代时出错 'Value cannot be null:nodeName'

Error 'Value cannot be null:nodeName' when creating new iteration

api

sdk

client

azure-devops-server-2019