Question

我想使用System.Reflection库而不是ActiveDs。我在Web上发现了这个代码，它将LargeInteger解析为HighPart和LowPart 我完全不了解它，特别是方法＆＃39; HighPart＆＃39;和＆＃39; LowPart＆＃39;界定？是在Object类中还是我必须定义它？

以下是解析largeInteger的代码：

de = new DirectoryEntry(curDomain,adUser,adPwd);        
object largeInteger = de.Properties["maxPwdAge"].Value;
System.Type type = largeInteger.GetType();
int high = (int)type.InvokeMember("HighPart", BindingFlags.GetProperty, null, largeInteger, null);
int low = (int)type.InvokeMember("LowPart", BindingFlags.GetProperty, null, largeInteger, null);

谢谢！

Answer 1

它在IADsLargeInteger中定义，它是一个COM接口。

http://msdn.microsoft.com/en-us/library/aa706037%28v=vs.85%29.aspx

要摆脱ActiveD，您可以自己定义类型（C＃）：

[
ComImport,
InterfaceType(ComInterfaceType.InterfaceIsIDispatch),
Guid("9068270B-0939-11D1-8BE1-00C04FD8D503")
]
public interface IADsLargeInteger
{
    int HighPart{get;set;}
    int LowPart{get;set;}
}

private long? GetLargeInt(DirectoryEntry de, string attrName)
{
    long? ret = null;

    IADsLargeInteger largeInt = de.Properties[attrName].Value as IADsLargeInteger;
    if (largeInt != null)
    {
        ret = (long)largeInt.HighPart << 32 | largeInt.LowPart;
    }

    return ret;
}

InvokeMember如何了解HighPart属性？

1 个答案: