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System.IO.StreamWrite sw = new System.IO.StreamWrite("textfilepath.txt");<br />
sw.Write("String Value");<br />
sw.Close();
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Hello all,
I was wondering if there was a way to overcome the "dynamic method lookup" done by MethodBase.Invoke when invoking virtual methods. For example:
public class A
{
public virtual int Call()
{
return 1;
}
}
public class B : A
{
public override int Call()
{
return 2;
}
}
... invoking it somewhere else ...
B obj = new B();
MethodInfo method = typeof(A).GetMethod("Call", BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public);
int a = method.Invoke(this, null);
the final value of a would be 2 and not 1.
Anyone know how to get around this?
(P.S. A page on the columbia university website details the default behavior[^] under the 'Remarks' section of Invoke )
Thanks in advance!
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That's how virtual methods work, even if you call them directly. obj.Call would return 2, not 1, so why should Method.Invoke work differently? It would amount to bypassing the virtual method mechanism, wouldn't it?
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Yes, that makes sense. But somehow, inside the method, doing something like
base.Call() will actually invoke the superclass method.
Is there any way to simulate that functionality outside of the overriden method call?
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Yeah it is possible ... instead of overriding the function in the derived class use the key word new ..ie
class B : A
{
public void new Call()
{
return 2;
}
}
Now if u create a object of class A and call the Call() function it would call A's definition of Call and not B's
Hope it helps
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Hi,
I was wondering if anyone knew how to rename(logon name) accounts in AD using C#???
Thanks,
Ben
Ben Brantly
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Look up System.DirectoryServices.ActiveDirectory
only two letters away from being an asset
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I'v been looking around for some help with the current issue i have with converting "Strings.Chr" in VB.NET 2.0 to C#...So can someone please look at this String of code and help me Convert it,cause i'm at a loss with this section...
headerReturn = Name + char.ConvertFromUtf32(0) + char.ConvertFromUtf32(Ver) + new string(char.ConvertToUtf32(0), 2) + Strings.Chr(x) + Strings.Chr(i) + Strings.Chr(0) + Strings.Chr(int.Parse("&H" + PacketType)) + new string(Strings.Chr(0), 8) + pck;
The Strings.Chr is VB.NET,I'v used the char.ConvertFromUtf32 in sections but i'm not sure if that is even Correct 
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Anything in the VisualBasic namespace is legacy rubbish and should be avoided.
Console.WriteLine((char)(65));
This prints out 'A', so a cast to char will work just fine. You're building a string with multiple null delimiters, from the look of it ? The fact you're only putting one null in makes it an ANSI string, so this should work just fine.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Ok so the Rest of that string can be Eliminated totally???
with like:: headerReturn = Name(char(65)); ?? what about the rest of it
Strings.Chr(int.Parse("&H" + PacketType)) + new string(Strings.Chr(0), 8) + pck;
I understand what your saying,I'm not putting Visual Basic in my C# code by any means...I'm just trying to Convert that string into a complete string for C#...I'm fairly new to working with Char in C#...
or would it be something along this line::
headerReturn = Name + (char(65)) + (char(int.Parse("&H" + PacketType))) + pck; ????
So you get the Whole picture here is the Entire Block of Code::
public static string Header( string PacketType, string pck ) <br />
{<br />
<br />
string headerReturn = null;<br />
short i = 0; <br />
short x = 0; <br />
<br />
i = System.Convert.ToInt16(pck.Length); <br />
while ( i > 255 ) <br />
{ <br />
i = System.Convert.ToInt16( i - 256 ); <br />
x = System.Convert.ToInt16( x + 1 ); <br />
}<br />
headerReturn = Name + char.ConvertFromUtf32(0) + char.ConvertFromUtf32(Ver) + new string(char.ConvertToUtf32(0), 2) + Strings.Chr(x) + Strings.Chr(i) + Strings.Chr(0) + Strings.Chr(int.Parse("&H" + PacketType)) + new string(Strings.Chr(0), 8) + pck; <br />
Debug.Print( headerReturn ); <br />
return headerReturn;<br />
}
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DocH0liday wrote: with like:: headerReturn = Name(char(65));
You can replace Strings.Chr(0) with (char)0, is what I am saying.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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One section i'm having a bit of trouble with is this section::
+ new string(char.ConvertToUtf32(0), 2).. I'v tried (char(0), 2)) but i get an error..
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you need to replace the char bit only, just like everywhere else
+ new string((char)0, 2)
I assume this constructor builds a string with n chars ( in this case, two null characters )
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Hi,
I know how to use indexers but can someone tell me their every day use of an indexer? At what point in development does someone say that an indexer is needed for x reason..
thanks a lot
erik
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The obvious one is if a class acts as some sort of collection.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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I would like to know how to move an e-mail item from Inbox to another folder using C# and MAPI.
TO MOVE THE ITEM I USED THE FOLLOW LINE:
message.MoveTo(oStored_ID, oStored_ID);
AND TO GET THE VARIABLES oStored_ID AND oStored_ID I USED THE FOLLOW LINES:
foreach(MAPI.InfoStore Is in (IEnumerable)session.InfoStores)
{
MapiFolderRoot = (MAPI.Folder)Is.RootFolder;
MapiFolders = (MAPI.Folders)MapiFolderRoot.Folders;
MapiFolder = (MAPI.Folder)MapiFolders.GetFirst();
while (MapiFolder != null)
{
if (MapiFolder.Name.ToString() == "Lidos")
bolMoverEmail=true;
oFolder_ID = MapiFolder.FolderID;
oStored_ID = MapiFolder.StoreID;
}
MapiFolder = (MAPI.Folder)MapiFolders.GetNext();
}
}
However when I execute the line:
message.MoveTo(oStored_ID, oStored_ID);
the item disappears from the Inbox folder but is not moving to another folder which name is "Lidos".
Thanks for your help.
Manoel Bonin
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Hi!
Could it be that it's because of the obvious typo (oStored_ID twice)?
Even though I've never worked with MAPI I'd expect a MoveTo method to require the folderID and the storeID, what use would be oFolder_ID otherwise?
Regards,
mav
--
Black holes are the places where god divided by 0...
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Thanks for your attention!
I put the corret parameter, but isn´t work.
If you know how to move an e-mail item using another method I´ll apreciate!
Just to remember: I am using Outlook 2002 and C#.
Thanks!
Manoel Bonin
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use:
oFolder_ID = MapiFolder.ID;
is not FolderID
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Hi everyone.
I'm currently working on an a system consisting of a service with a remote object that performs actions on a xmldatabase and on files on the harddrive, and several UI applications that communicate with this service through the remoteobject.
My problem is that the applications with their remote objects are in different scopes even though it's the "same" object so I have no way of notifying the other clients through events, that there's been a change in the database and or files.
I can't use a thread in the clients to check for changes, so I'm looking for any other way and I've failed using events.
Is there any type of global / interprocess events or messaging that I can use?
Any help is much appreciated.
-Larantz-
for those about to code, we salute you
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If you are using 2.0 and SQL Server 2005 you can use SqlNotification.
only two letters away from being an asset
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I forgot to say: I am using Visual Studio 2003 and Outlook 2002.
Thanks!
Manoel Bonin
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Possibly MSMQ would be an option
only two letters away from being an asset
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Hi.
Yes I'm using .NET 2.0, but it's not an SQL database. It's just a Windows Service which uses a xml-file for storage / database.
My problem is the communication is through remote objects and events won't reach the client applications.
Never heard of MSMQ.
I'll google it 
-Larantz-
-- modified at 5:19 Friday 11th August, 2006
Ah yes Messaging Queue.
I tried that a while back with no success. Maybe I did something wrong back then.
I'll give it another try.
Thx.
for those about to code, we salute you
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Hi everyone,
I would really appreciate some help if anyone knows the answer. I've been reading online about this topic for the past 2 days, and so far can't find an exact example to help me.
I have an unmanaged C++ dll that is comprised of several C++ classes. I need to be able to access some of the functions/procedures in this dll from my C# application. I have tried using the
[DllImport("MITT.dll")]
public static extern void Start();
method, but this results in an EntryPointNotFoundException due to the name decorating/mangling that occurs on the C++ procedure names. I then used the dumpbin.exe to find the decorated name, and used it in the DllImport EntryPoint attribute, and this worked, but I don't want to use that solution just in case the dll is recompiled at some time and the decorated name changes.
Can anyone please suggest another way to to what I'm trying to do? I've been trying to write a managed C++ wrapper class for the dll to export the functions, but so far I can't figure out how to do that, so if that is the answer, if someone could provide me an example that would be much appreciated.
Thank you in advance,
Doreen
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