Atlassian.NET SDK異步方法不會引發異常

Question

編輯：

private void button1_Click(object sender, EventArgs e) {
 string summary = "TestSummary";
 string description = "TestDescription";
 string type = "Task";
 string projectKey = "TST";
 string priority = "p - 3";

 var issueCreated = createIssueWrapper(summary, description, type, priority, projectKey).Result;
}

public async Task <string> createIssueWrapper(string summary, string description, string type, string priority, string projectKey) {
 string returnVal = "";

 returnVal = await createIssue(summary, description, type, priority, projectKey);

 return returnVal;

}

public async Task <string> createIssue(string summary, string description, string type, string priority, string projectKey) {
 string returnVal = "";

 try {
  var issue = jira.CreateIssue(projectKey);
  issue.Type = type;
  issue.Priority = priority;
  issue.Summary = summary;
  issue.Description = description;

  var jiraIssue = await issue.SaveChangesAsync();

  if (jiraIssue != null) {
   returnVal = jiraIssue.Key.ToString();
  }

 } 
 catch (Exception ex) {
  returnVal = "There was a problem creating the issue. Please try again.";
 }

 return returnVal;

}

---

我一直試圖弄清楚為什么Atlassian.NET Jira異步方法沒有返回像常規（非異步）方法那樣的異常。

例如，我調用一個異步方法createIssue創建一個新的Jira問題，如下所示：

string summary = "TestIssue";
string description = "TestDescription";
string type = "Task";
string projectKey = "TST";
string priority = "p - 3";

Task<string> created = createIssue(summary, description, type, priority, projectKey);

這是異步方法：

public async Task<string> createIssue(string summary, string description, string type, string priority, string projectKey)
{
    string key = "";

    try
    {
        var issue = jira.CreateIssue(projectKey);
        issue.Type = type;
        issue.Priority = priority;
        issue.Summary = summary;
        issue.Description = description;

        var jiraIssue = await issue.SaveChangesAsync();

        if (jiraIssue != null)
        {
            key = jiraIssue.Key.ToString();
        }        
    }
    catch (Exception ex)
    {

    }    
    return key;
}

我在await issue.SaveChangesAsync()行上添加了一個斷點，並跨過它。 沒有引發異常，因此代碼繼續等待調用完成。 什么都沒有告訴我有問題。

所以我將createIssue方法轉換為非異步方法：

var issue = jira.CreateIssue(projectKey);
issue.Type = type;
issue.Priority = priority;
issue.Summary = summary;
issue.Description = description;

issue.SaveChanges();

在這里，我得到一個異常，告訴我實際的問題：

{找不到類型為'Atlassian.Jira.IssuePriority'的名稱為'p-3'的ID為id的實體。可用：[10000：p-3,10001：N / A，4：p-4,3： p-2,2：p-1,1：p-0]“}

是否可以在Async方法中捕獲這些類型的異常？ 我需要創建處理程序還是做其他事情？

Answer 1

通過使用.Result阻止UI線程，意外創建了死鎖。

請參閱此MSDN文章進行討論。

將按鈕處理程序更改為異步並在其中使用await。 另外，刪除createIssueWrapper您不需要它。