复制代码 代码如下:

function Try

{

param

(

[ScriptBlock]$Command = $(throw "The parameter -Command is required."),

[ScriptBlock]$Catch = { throw $_ },

[ScriptBlock]$Finally = {}

)

& {

$local:ErrorActionPreference = "SilentlyContinue"

trap

{

trap

{

& {

trap { throw $_ }

&$Finally

}

throw $_

}

$_ | & { &$Catch }

}

&$Command

}

& {

trap { throw $_ }

&$Finally

}

}

使用示例：

复制代码 代码如下:

# Example usage

Try {

echo " ::Do some work..."

echo " ::Try divide by zero: $(0/0)"

} -Catch {

echo " ::Cannot handle the error (will rethrow): $_"

#throw $_

} -Finally {

echo " ::Cleanup resources..."

}