How to check if PowerShell is installed or not using C#

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Determine installed PowerShell version 23 answers

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使用MSDN博客文章PowerShell安装的检测逻辑，我写了如下方法：

public bool PowershellExists()
{
    string regval = Microsoft.Win32.Registry.GetValue(@"HKEY_LOCAL_MACHINESOFTWAREMicrosoftPowerShell1", "Install", null).ToString();
    if (regval.Equals("1"))
        return true;
    else
        return false;
}

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