我想使用 EPPlus 根据属性值查找范围内的所有单元格。假设我需要在现有电子表格中找到所有带有粗体文本的单元格。我需要创建一个接受可配置属性参数的函数,但我在使用存储在变量中的属性时遇到问题:
$cellobject = $ws.cells[1,1,10,10]
$properties = 'Style.Font.Bold'
$cellobject.$properties
$cellobject.{$properties}
$cellobject.($properties)
$cellobject."$properties"
这些都不起作用,并导致呼叫深度溢出。
如果这种方式不起作用,库中是否有我可以使用的东西?
编辑:为了显示最终解决方案,我用HanShotFirst提供的概念更新了函数...
function Get-CellObject($ExcelSheet,[string]$PropertyString,[regex]$Value){
#First you have to get the last row with text,
#solution for that is not provided here...
$Row = Get-LastUsedRow -ExcelSheet $ExcelSheet -Dimension $true
while($Row -gt 0){
$range = $ExcelSheet.Cells[$Row, 1, $Row, $ExcelSheet.Dimension.End.Column]
foreach($cellObject in $range){
if($PropertyString -like '*.*'){
$PropertyArr = $PropertyString.Split('.')
$thisObject = $cellObject
foreach($Property in $PropertyArr){
$thisObject = $thisObject.$Property
if($thisObject -match $Value){
$cellObject
}
}
}
else{
if($cellObject.$PropertyString -match $Value){
$cellObject
}
}
}
$Row--
}
}
#The ExcelSheet parameter takes a worksheet object
Get-CellObject -ExcelSheet $ws -Property 'Style.Font.Bold' -Value 'True'
点进入属性并不能真正使用字符串。您需要分隔属性层。下面是具有三层属性的对象的示例。
# create object
$props = @{
first = @{
second = @{
third = 'test'
}
}
}
$obj = New-Object -TypeName psobject -Property $props
# outputs "test"
$obj.first.second.third
# does not work
$obj.'first.second.third'
# outputs "test"
$a = 'first'
$b = 'second'
$c = 'third'
$obj.$a.$b.$c
在您的示例中,这将是这样的:
$cellobject = $ws.cells[1,1,10,10]
$p1 = 'Style'
$p2 = 'Font'
$p3 = 'Bold'
$cellobject.$p1.$p2.$p3
或者你可以做一点动态。这应该产生相同的结果:
$cellobject = $ws.cells[1,1,10,10]
$props = 'Style.Font.Bold'.Split('.')
$result = $cellobject
foreach ($prop in $props) {
$result = $result.$prop
}
$result
从星期五开始,这里有一个功能:)
function GetValue {
param (
[psobject]$InputObject,
[string]$PropertyString
)
if ($PropertyString -like '*.*') {
$props = $PropertyString.Split('.')
$result = $InputObject
foreach ($prop in $props) {
$result = $result.$prop
}
} else {
$result = $InputObject.$PropertyString
}
$result
}
# then call the function
GetValue -InputObject $cellobject -PropertyString 'Style.Font.Bold'