如何在PowerShell中正确重载方法

我有一个用户类，它有一个重载方法“SetPassword”，用于填充用户凭据：

class User
{
    ...
    [PSCredential] $Credential
    ...
    SetPassword([string] $Password){
        $UserPassword = ConvertTo-SecureString $Password -AsPlainText -Force
        $UserCredential = New-Object System.Management.Automation.PSCredential (
                $this.name, $UserPassword)
        $this.Credential = $UserCredential
    }

    SetPassword(){
        $Password = Read-Host "Please Enter Password"
        $UserPassword = ConvertTo-SecureString $Password -AsPlainText -Force
        $UserCredential = New-Object System.Management.Automation.PSCredential (
                $this.name, $UserPassword)
        $this.Credential = $UserCredential
    }

我想将这两个方法合并为一个，将$Password作为可选参数。我会出于测试目的传入密码，否则会提示用户输入凭证

PowerShell不允许在方法体中使用PARAM（）

---

有没有一种更好的方法可以做到这一点，它不会像我在这里看到的那样有重复的代码？

调用前面的重载中最具体的重载：

SetPassword([string] $Password){
    $UserPassword = ConvertTo-SecureString $Password -AsPlainText -Force
    $UserCredential = New-Object System.Management.Automation.PSCredential (
            $this.name, $UserPassword)
    $this.Credential = $UserCredential
}

SetPassword(){
    $Password = Read-Host "Please Enter Password"
    $this.SetPassword($Password)
}

---

我可能会默认使用

SecureString

：

SetPassword([securestring] $Password){
    $UserCredential = New-Object System.Management.Automation.PSCredential (
            $this.name, $Password)
    $this.Credential = $UserCredential
}

SetPassword([string] $Password){
    $UserPassword = ConvertTo-SecureString $Password -AsPlainText -Force
    $this.SetPassword($UserPassword)
}

SetPassword(){
    $Password = Read-Host "Please Enter Password" -AsSecureString
    $this.SetPassword($Password)
}

---

调用上一个重载中最具体的重载：

SetPassword([string] $Password){
    $UserPassword = ConvertTo-SecureString $Password -AsPlainText -Force
    $UserCredential = New-Object System.Management.Automation.PSCredential (
            $this.name, $UserPassword)
    $this.Credential = $UserCredential
}

SetPassword(){
    $Password = Read-Host "Please Enter Password"
    $this.SetPassword($Password)
}

---

我可能会默认使用

SecureString

：

SetPassword([securestring] $Password){
    $UserCredential = New-Object System.Management.Automation.PSCredential (
            $this.name, $Password)
    $this.Credential = $UserCredential
}

SetPassword([string] $Password){
    $UserPassword = ConvertTo-SecureString $Password -AsPlainText -Force
    $this.SetPassword($UserPassword)
}

SetPassword(){
    $Password = Read-Host "Please Enter Password" -AsSecureString
    $this.SetPassword($Password)
}

---

建议：如果您使用的是类，请使用类型构造函数，而不是

newobject

。。如果您打算使用

v5

功能，那么为了保持一致性和可读性，不妨利用所有这些功能

[PSCredential]：：new（$this.Name，$UserPassword）

建议：如果使用类，请使用类型构造函数而不是

新对象。。如果您打算使用
v5
功能，那么为了保持一致性和可读性，不妨利用所有这些功能<代码>[PSCredential]：：新建（$this.Name，$UserPassword）