.NET (Core and Framework)

pradpb999 wrote:

We can do this by using MS OFFICE libraries, but i want do using WINDOWS API's

analytiks wrote:

the event is defined in a .net framework class, so can't check if it is null

class A
{
public bool IsSubscribed(MethodDelegate passedDelegate)
{
            if (evt == null)
                return false;

            foreach (Delegate d in evt.GetInvocationList())
            {
                if (d == passedDelegate)
                {
                    return true;
                }
            }

            return false;
}
}

A a = new A();
MethodDelegate thisMethod = new MethodDelegate(SomeMethod);
a.evt += thisMethod;
Console.WriteLine(a.IsSubscribed(thisMethod));
a.evt -= thisMethod;
Console.WriteLine(a.IsSubscribed(thisMethod));

System.IO.DirectoryInfo dir = new DirectoryInfo(strDirectoryName);<br />
	<br />
FileInfo[] allfiles = dir.GetFiles("*.*");<br />
				<br />
foreach(FileInfo f in allfiles)<br />
{<br />
   if ((f.Attributes & System.IO.FileAttributes.ReadOnly) != 0)<br />
  f.Attributes -= System.IO.FileAttributes.ReadOnly;<br />
}