System.NotSupportedException: Invalid setup on a non-virtual (overridable in VB) member: x => x.PropertiesLoaded

我的代码：

Mock<SearchResultCollection> searchResultMock = new Mock<SearchResultCollection>();
 
// Set up collection that will be returned
string[] tempData = { "one","two" };
searchResultMock.SetupGet(x => x.PropertiesLoaded).Returns(tempData);

有没有人成功嘲笑过这样的课程？有问题的财产只有一个吸气剂,而不是虚拟的.

//
    // Summary:
    //     Gets the System.DirectoryServices.DirectorySearcher properties that were
    //     specified before the search was executed.
    //
    // Returns:
    //     An array of type System.String that contains the properties that were specified
    //     in the System.DirectoryServices.DirectorySearcher.PropertiesToLoad property
    //     collection before the search was executed.
    public string[] PropertiesLoaded { get; }