Question

我正在尝试生成此doctype字符串：

<!DOCTYPE games SYSTEM "transform.dtd">

这就是我一直在尝试的：

$writer.WriteDocType("games", $null , "transform.dtd", $null )

我不完全确定如何获得确切的行。

Answer 1

PowerShell中存在一个已知错误：passing null to a string parameter results in a String.Empty instead of null.

你可以这样解决：

# Given an XML writer of some sort ...
$writer = [system.xml.xmlwriter]::create("$pwd\test.xml")

# Set up the parameters you want to pass to the method:
$params = @("games",$null,"transform.dtd",$null)

# And invoke it using .Net reflection:
$writer.GetType().GetMethod("WriteDocType").Invoke($writer,$params)

# Eventually, close the writer:
$writer.Close()

xmlwriter writedoctype格式化

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