我想将PowerShell与selenium一起使用，并从http://www.java2s.com/Code/Jar/s/Downloadseleniumremotedriver2350jar.htm下载selenium。当我试图加载其中一个dll时，我得到了错误。希望有人能帮助我。
这是我的系统信息。

OS Name:                   Microsoft Windows 7 Enterprise
OS Version:                6.1.7601 Service Pack 1 Build 7601
OS Manufacturer:           Microsoft Corporation

这是我的PowerShell信息。

PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40> $psversiontable

Name                           Value
----                           -----
PSVersion                      4.0
WSManStackVersion              3.0
SerializationVersion           1.1.0.1
CLRVersion                     4.0.30319.18052
BuildVersion                   6.3.9421.0
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0}
PSRemotingProtocolVersion      2.2

PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40>

这是我在尝试加载dll时得到的错误。

PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40> Add-Type -Path .\WebDriver.dll
    Add-Type : Could not load file or assembly 'file:///C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40\WebDriver.dll' or one of its dependencies. Operation is
    not supported. (Exception from HRESULT: 0x80131515)
    At line:1 char:1
    + Add-Type -Path .\WebDriver.dll
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : NotSpecified: (:) [Add-Type], FileLoadException
        + FullyQualifiedErrorId : System.IO.FileLoadException,Microsoft.PowerShell.Commands.AddTypeCommand

    PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40> [reflection.assembly]::LoadFrom(".\WebDriver.dll")
    Exception calling "LoadFrom" with "1" argument(s): "Could not load file or assembly 'file:///C:\Users\test\WebDriver.dll' or one of its dependencies. The system
    cannot find the file specified."
    At line:1 char:1
    + [reflection.assembly]::LoadFrom(".\WebDriver.dll")
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
        + FullyQualifiedErrorId : FileNotFoundException

    PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40> [reflection.assembly]::LoadFrom("WebDriver.dll")
    Exception calling "LoadFrom" with "1" argument(s): "Could not load file or assembly 'file:///C:\Users\test\WebDriver.dll' or one of its dependencies. The system
    cannot find the file specified."
    At line:1 char:1
    + [reflection.assembly]::LoadFrom("WebDriver.dll")
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
        + FullyQualifiedErrorId : FileNotFoundException

    PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40> [reflection.assembly]::LoadFrom("C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40\WebDriver.dll")
    Exception calling "LoadFrom" with "1" argument(s): "Could not load file or assembly 'file:///C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40\WebDriver.dll' or
    one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)"
    At line:1 char:1
    + [reflection.assembly]::LoadFrom("C:\Users\test\Downloads\selenium-dotnet-2.35.0 ...
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
        + FullyQualifiedErrorId : FileLoadException

    PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40> [reflection.assembly]::LoadFile("C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40\WebDriver.dll")
    Exception calling "LoadFile" with "1" argument(s): "An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed

 in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous. If
    this load is not intended to sandbox the assembly, please enable the loadFromRemoteSources switch. See http://go.microsoft.com/fwlink/?LinkId=155569 for more
    information."
    At line:1 char:1
    + [reflection.assembly]::LoadFile("C:\Users\test\Downloads\selenium-dotnet-2.35.0 ...
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
        + FullyQualifiedErrorId : NotSupportedException

    PS C:\Users\test\Downloads\selenium-dotnet-2.35.0\net40>