假设“修改日期”列有效，因此您可以使用它，而不必从文件名中提取日期，PowerShell处理System.DateTime对象，使您可以将.Date取出来-即没有时间的一天。

步骤可以是：

• 按日期对图片进行分组，所以每天都有一组
• 在每个小组的正午时间使用此日期+12小时
• 从中午日期减去文件日期，并取绝对值以删除+/-符号
• 排序以获取距中午的最小距离

未经测试，但我认为大致正确，PowerShell示例：

    Get-ChildItem -Path 'c:\pictures' | 

        # group the pictures by day
        Group-Object -Property {$_.LastWriteTime.Date} |

        # loop over each day-group
        ForEach-Object {    

            # get the day back from the group name,make it midday
            $midday = (Get-Date $_.Name).AddHours(12)

            # sort the files for that day,# by closeness to midday,# pick the nearest 1
            # Copy it to ... ? you didn't say where. Some subfolder,I guess

            $_.Group | Sort-Object {
                    [math]::abs(($_.LastWriteTime - $midday).TotalSeconds)} | 
                    Select-Object -First 1
                } |
                Copy-Item -Destination 'c:\pictures\subfolder' -WhatIf
        }

您必须删除-WhatIf才能使其真正起作用，然后将copy-item更改为move-item以便对数据进行加密。

我怀疑类似的方法可以解决问题

[TestMethod]
public void CheckAvailabilityTest() {
    //Act
    IHttpActionResult actualQR = barcodeController.CheckAvailability();
    var contentVersion = actualQR as OkNegotiatedContentResult<string>;

    //Assert    
    Assert.IsNotNull(contentVersion); //if null,fail
    Assert.AreNotEqual("",contentVersion.Content); //otherwise check other assertion
}

获取C：\ SomePath \ ToPictures中的所有* .jpg文件。确保它们不是文件夹，并且是在11:52:30 AM之后但在12:07:30 PM（间隔15分钟）之前写入的。然后，将它们移动到C：\ TargetPath。

注意：您可能希望先使用Copy-Item进行测试，然后再使用Move-Item。

希望这会有所帮助。

如果要在文件名中使用时间戳记，则下面的代码应该可以满足您的要求：

$sourceFolder = 'D:\test'
$destination  = 'D:\PicturesAroundNoon'

# if the destination path does not exist,ceate it
if (!(Test-Path -Path $destination -PathType Container)) {
    $null = New-Item -Path $destination -ItemType Directory
}
# get a list of FileInfo objects for the files to move
Get-ChildItem -Path $sourceFolder -Filter '*.jpg' -File | 
    Where-Object { $_.BaseName -match '^\d{14}$' -and $_.Name.Substring(8,2) -match '11|12' } | 
    Group-Object @{Expression = {$_.BaseName.Substring(0,8)}} | 
    ForEach-Object {
        if ($_.Group.Count -eq 1) { $fileToMove = $_.Group[0] }  # return the only file for thatdate
        else {
            if ($_.Group.Count -eq 2) {
                $index = 0
            }
            else {
                $index = [math]::Floor($_.Group.Count / 2)
            }
            # get the middle two files from the collection and test which is closest to 12:00
            $file1,$file2 = ($_.Group | Sort-Object)[$index..($index + 1)]
            # get the dates from the file BaseName property
            $date1 = [datetime]::ParseExact($file1.BaseName,'yyyyMMddHHmmss',$null)
            $date2 = [datetime]::ParseExact($file2.BaseName,$null)
            $noon  = Get-Date -Year $date1.Year -Month $date1.Month -Day $date1.Day -Hour 12 -Minute 0 -Second 0
            # get the time distance to 12:00 in seconds
            $dif1 = [math]::Abs(($date1 - $noon).TotalSeconds)
            $dif2 = [math]::Abs(($date2 - $noon).TotalSeconds)
            $fileToMove = if ($dif1 -lt $dif2) { $file1 } else { $file2 }
        }
        # now move the file to its destination
        $fileToMove | Move-Item -Destination $destination -WhatIf
    }

如果您对控制台中显示的结果感到满意，请删除-WhatIf