传递字符串 [] 时无法调用正确的 .NET 重载

Question

我有一个要从 powershell 调用的方法，它是

 Workspace.GetPendingChanges(string[] items)

这个方法有多个重载，但让我生活困难的是：

 Workspace.GetPendingChanges(string items)
 Workspace.GetPendingChanges(string[] items)
 Workspace.GetPendingChanges(ItemSpec[] itemspecs)

我正在使用来自 TFS 2015 的新构建任务的 Find-Files cmdlet 获取文件列表：

if ($ItemSpec.Contains("*") -Or $ItemSpec.Contains("?"))
{
    Write-Verbose "Pattern found in solution parameter. Calling Find-Files."
    Write-Verbose "Calling Find-Files with pattern: $ItemSpec"    
    [string[]] $FilesToCheckin = @(Find-Files -SearchPattern $ItemSpec -RootFolder $env:BUILD_SOURCESDIRECTORY)
    Write-Verbose "Found files: $FilesToCheckin"
}
else
{
    Write-Verbose "No Pattern found in solution parameter."
    [string[]] $FilesToCheckin = @($ItemSpec)
}

然后我调用：

$pendingChanges = $provider.Workspace.GetPendingChanges( @($FilesToCheckin))

我试过任何版本的强制转换 [string[]] 强制数组表示法 @() 我知道，但是 find-files 的结果在传递到正确的重载：

System.Management.Automation.MethodInvocationException: Exception calling "GetPendingChanges" with "1" argument(s): "TF400889: The following path contains more than the allowed 259 characters:

这是生成的"long string"

C:\TfsData\Build\_work\s\BuildProcessTemplates\AzureContinuousDeployment.11.xaml C:\TfsData\Build\_work\s\BuildProcessTemplates\DefaultTemplate.11.1.xaml C:\TfsData\Build\_work\s\BuildProcessTemplates\LabDefaultTemplate.11.xaml C:\TfsData\Build\_work\s\BuildProcessTemplates\UpgradeTemplate.xaml C:\TfsData\Build\_work\s\checkin-changes.ps1 C:\TfsData\Build\_work\s\update.txt C:\TfsData\Build\_work\s\updatefile.ps1.

Specify a shorter path." ---> Microsoft.TeamFoundation.InvalidPathException: TF400889: The following path contains more than the allowed 259 characters: C:\TfsData\Build\_work\s\BuildProcessTemplates\AzureContinuousDeployment.11.xaml C:\TfsData\Build\_work\s\BuildProcessTemplates\DefaultTemplate.11.1.xaml C:\TfsData\Build\_work\s\BuildProcessTemplates\LabDefaultTemplate.11.xaml ...
    at System.IO.PathHelper.GetFullPathName()
    at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
    at System.IO.Path.GetFullPathInternal(String path)
    at Microsoft.TeamFoundation.Common.FileSpec.GetFullPathWrapper(String path)
    --- End of inner exception stack trace ---
    at Microsoft.TeamFoundation.Common.FileSpec.GetFullPathWrapper(String path)
    at Microsoft.TeamFoundation.Common.FileSpec.GetFullPath(String path, Boolean checkForIllegalDollar)
    at Microsoft.TeamFoundation.VersionControl.Common.VersionControlUtil.GetFullPath(String item, PathLength maxServerPathLength)
    at Microsoft.TeamFoundation.VersionControl.Client.ItemSpec..ctor(String item, RecursionType recursionType, Int32 deletionId)
    at Microsoft.TeamFoundation.VersionControl.Client.ItemSpec.FromStrings(String[] paths, RecursionType recursion)
    at

这表明它正在调用正确的重载

Microsoft.TeamFoundation.VersionControl.Client.Workspace.GetPendingChanges(String[] items, RecursionType recursion, Boolean includeDownloadInfo)

cmdlet returns List<string> 以下：

protected override void ProcessRecord()
{
    base.ProcessRecord();
    if (!this.IncludeFiles && !this.IncludeFolders)
    {
        this.IncludeFiles = true;
    }
    List<string> sendToPipeline = FindFiles.FindMatchingFiles(this.RootFolder, this.SearchPattern, this.IncludeFiles, this.IncludeFolders);
    base.WriteObject(sendToPipeline, true);
}

为了确保我从对 Find-Files 的调用中得到一个列表，我添加了：

Write-Verbose "Found files: " -Verbose
Write-Verbose $FilesToCheckin.Count -Verbose

其中 returns：7，符合预期。

我的问题

如何防止 Powershell 在将 find-files 的结果传递给 GetPendingChanges 之前将其转换为一个长字符串？

项目可用，损坏的代码在底部注释掉：

https://github.com/jessehouwing/vsts-tfvc-tasks/blob/master/vsts-tfvc-checkin/TfvcCheckin.ps1

Answer 1

我不知道为什么会这样，但是在添加 @() 并在所有地方强制转换为 [string[]] 并删除 Write-Verbose $FilesToCheckin 之后它起作用了：

if ($ItemSpec.Contains("*") -Or $ItemSpec.Contains("?"))
{
    Write-Verbose "Pattern found in solution parameter. Calling Find-Files."
    Write-Verbose "Calling Find-Files with pattern: $ItemSpec"    
    [string[]] $FilesToCheckin = @(Find-Files -SearchPattern $ItemSpec -RootFolder $env:BUILD_SOURCESDIRECTORY)
}
else
{
    Write-Verbose "No Pattern found in solution parameter."
    [string[]] $FilesToCheckin = @($ItemSpec)
}

$pendingChanges = $provider.Workspace.GetPendingChanges( [string[]] @($FilesToCheckin) )

Answer 2

您是否尝试过通过反射调用方法来强制正确重载？类似于：

[Object[]] $parameters = @($stringArray)
$methods = $provider.Workspace.GetType().GetMethods() | where {$_.Name -eq "GetPendingChanges" -and $_.GetParameters()[0].ParameterType.ToString() -eq "System.String[]" } | Select-Object $_
$methods[0].Invoke($provider.Workspace, $parameters);

传递字符串 [] 时无法调用正确的 .NET 重载

Unable to call correct .NET overload when passing string[]

powershell

tfs-sdk

azure-pipelines

我的问题