从下面的第2部分示例稍微改变了我的代码,但是参考第2部分的例子,这非常感谢stackoverflow中的成员。
[string] $Source = 'e:\Temp\DataFromSkywardEdited.csv';
[string] $Destination = 'e:\Temp\DataFromSkywardRD.csv';
[object] $SortByColNames = 'LastName','FirstName';
[string] $ShowColsByNumber = "{0},{1},{2},{3},{4},{5},{6},{7},{8}";
[object] $ColumnValueFormat = '$_.EmployeeID.Trim()', '$_.FirstName.Trim()', '$_.LastName.Trim()', '$_.Location.Trim()', '$_.Department.Trim()', '$_.TelephoneNo.Trim()', '$_.Email.Trim()', '$_.EmpTypeCode.Trim()', '$_.EmployeeTypeDescription.Trim()';
Get-Content $Source |
ConvertFrom-Csv -Delimiter $Delimiter |
Sort-Object -Property $SortByColNames -Unique |
ForEach-Object {
# Each of the values in $ColumnValueFormat must be executed to get the property from the loop variable ($_).
$values = foreach ($value in $ColumnValueFormat) {
Invoke-Expression $value
}
# Then the values can be passed in as an argument for the format operator.
$ShowColsByNumber -f $values
} |
Add-Content $Destination
如何将 $ ColumnValueFormat 用数字而不是列名表示?
所以而不是:
[object] $ColumnValueFormat = '$_.EmployeeID.Trim()', '$_.FirstName.Trim()', '$_.LastName.Trim()', '$_.Location.Trim()', '$_.Department.Trim()', '$_.TelephoneNo.Trim()', '$_.Email.Trim()', '$_.EmpTypeCode.Trim()', '$_.EmployeeTypeDescription.Trim()';
类似于:
[object] $ColumnValueFormat = '$_.[0].Trim()', '$_.[1].Trim()', '$_.[2].Trim()', '$_.[3].Trim()', '$_.[4].Trim()', '$_.[5].Trim()', '$_.[6].Trim()', '$_.[7].Trim()', '$_.[8].Trim()';
答案 0 :(得分:2)
这看起来好像你正在努力做到这一点,但要直接回答你的问题,你只需删除括号内的数字之前的句号。所以......
[object] $ColumnValueFormat = '$_[0].Trim()', '$_[1].Trim()', '$_[2].Trim()', '$_[3].Trim()', '$_[4].Trim()', '$_[5].Trim()', '$_[6].Trim()', '$_.[7]Trim()', '$_[8].Trim()';
答案 1 :(得分:2)
如何使
$ColumnValueFormat
由数字而不是列名表示?
你不会。只是......没有。
要修剪CSV的字段,您只需执行this之类的操作:
$csv = Import-Csv $Source
foreach ($record in $csv) {
foreach ($property in $record.PSObject.Properties) {
$property.Value = $property.Value.Trim()
}
}
$csv | Sort-Object $SortByColNames -Unique | Export-Csv $Destination
如果您必须以不同的方式处理不同的字段,请使用switch
语句来区分值:
$property.Value = switch ($property.Name) {
'foo' { ... }
'bar' { ... }
...
}
通过calculated properties修改字段:
Import-Csv $Source |
Select-Object @{n='EmployeeID';e={$_.EmployeeID.Trim()},
@{n='FirstName';e={...},
... |
Sort-Object $SortByColNames -Unique |
Export-Csv $Destination
或通过New-Object
重新创建记录:
Import-Csv $Source |
ForEach-Object {
New-Object -Type PSObject -Property @{
'EmployeeID' = $_.EmployeeID.Trim()
'FirstName' = ...
...
}
} |
Sort-Object $SortByColNames -Unique |
Export-Csv $Destination
在PowerShell v3及更新版本中,您甚至可以使用type accelerator [ordered]
按特定顺序创建属性,如下所示:
$props = [ordered]@{
'EmployeeID' = $_.EmployeeID.Trim()
'FirstName' = ...
...
}
New-Object -Type PSObject -Property $props
或者像这样:
[PSObject][ordered]@{
'EmployeeID' = $_.EmployeeID.Trim()
'FirstName' = ...
...
}