Powerbi 电源BI自定义连接器日志记录未发生

我正在Visual Studio 2017中创建一个Power BI自定义连接器，并希望在开发过程中对其进行日志记录

我在示例中遵循了这种方法，特别是在下面的TripPin示例中

诊断帮助文件diagnostics.pqm加载到my.pq文件中：

Extension.LoadFunction = (name as text) =>
    let
        binary = Extension.Contents(name),
        asText = Text.FromBinary(binary)
    in
        Expression.Evaluate(asText, #shared);

// Diagnostics module contains multiple functions. We can take the ones we need.
Diagnostics = Extension.LoadFunction("Diagnostics.pqm");
Diagnostics.LogValue = if (EnableTraceOutput) then Diagnostics[LogValue] else (prefix, value) => value;

EnableTraceOutput设置为true，Diagnostics.pqm文件设置为“编译”“显示用户跟踪”在项目属性中为true

我引用了函数：

shared GetSomeData = (test as logical, systemfolder as text) as table =>
    let
        #"SystemFolder" = Text.Trim(Text.Clean(systemfolder)),
        #"connstring" = "Provider=myprovider;Data Source=" & AddBs(#"SystemFolder") 
            & "seqco.dbf;Collating Sequence=machine;",
        _connstring = Diagnostics.LogValue("Conn String", #"connstring"),
        #"query" = "select stuff from table",
        data = OleDb.Query(#"connstring", #"query")
in
    data;

---

函数被执行并返回数据，但据我所知，没有记录任何内容

典型，需要正确阅读这个该死的示例，应该像这样调用它，在OleDb中使用_connstring。Query（）将强制它计算：

shared GetSomeData = (test as logical, systemfolder as text) as table =>
    let
        #"SystemFolder" = Text.Trim(Text.Clean(systemfolder)),
        #"connstring" = "Provider=myprovider;Data Source=" & AddBs(#"SystemFolder") 
            & "seqco.dbf;Collating Sequence=machine;",
        _connstring = Diagnostics.LogValue("Conn String", #"connstring"),
        #"query" = "select stuff from table",
        data = OleDb.Query(_connstring, #"query")
in
    data;