try {
    # 可能失败的操作
    Get-Content -Path '不存在的文件.txt' -ErrorAction Stop
    Invoke-RestMethod -Uri 'http://无效域名'
}
catch [System.IO.FileNotFoundException] {
    Write-Warning "文件未找到: $($_.Exception.ItemName)"
}
catch [System.Net.WebException] {
    Write-Warning "网络错误: $($_.Exception.Status)"
}
catch {
    Write-Error "未捕获的异常: $_"
}
finally {
    # 清理资源
    Remove-Variable -Name '*temp*' -ErrorAction SilentlyContinue
}

try {
    Get-Content 'nonexistent.txt' -ErrorAction Stop
}
catch [System.IO.FileNotFoundException] {
    Write-Host "文件未找到: $($_.Exception.Message)"
}
catch {
    Write-Host "未知错误: $($_.Exception.GetType().FullName)"
}
finally {
    # 清理资源代码
}

# 自动变量应用示例
$Error[0] | Format-List * -Force
$Error.Clear()
$ErrorActionPreference = 'Continue'

function Validate-Range {
    param([int]$Value)
    if ($Value -notin 1..100) {
        throw [System.ArgumentOutOfRangeException]::new('Value')
    }
}