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how to make my own classes show their methods and/or variables while typing?I've come across this a few different times and decided to ask in case there's a way to do it. It would simplify things a bit and I figured if anyone knows, more than likely that someone is here. I have a class for storing filenames and it's path along with a little more info. Here it is Public Class myFiles Public oldFileName As String Public oldPathAndName As String Public newFileName As String Public newPathAndName As String Public fileExtention As String End Class Now when using functions and such that are built in and you begin typing VS.net either pops up with what you can possibly use or you can force it by ctrl+space. Thats pretty much what I want to do. I may be doing something wrong that is making it so it isn't including it, but, if so hopefully any replies will point that out to me. I declare a new arraylist Public sourceArray, directoryListing As New ArrayList Then in a sub I do this For x As Integer = 0 To sourceArray.Count - 1 If sourceArray.Item(x).oldFileName.Contains(",") Then MessageBox.Show(sourceArray.Item(x).oldfilename) Else MessageBox.Show("No comma in name!" & vbCrLf & _ sourceArray.Item(x).oldfilename) End If Next Ok, now when I go to typing sourceArray.Item(x).oldFileName and I get this much done sourceArray.Item(x).ol or even if I just get to this sourceArray.Item(x). pressing ctrl+space should popup, or at least I would like it to, the possible variables/methods/fuctions/etc.. I have for that class stored in the arraylist. Did I explain this enough for you to understand what I'm trying to accomplish? If so, is there a way for me to get the classes variables to popup in the drop down box of the 'code completer'? Even though it doesn't automatically popup for quicker completion it does work just fine when I run it. But my memory isn't the greatest for all the different names and such I use in different parts of my project and would love to have the 'code completer' assist me with this. Thank you in advance for any help anyone can provide. ------- Kyote Please reply to the group. Kyote,
The arraylist holds objects. You need to cast the object back to an instance of your class. For example: Dim myFile As myFiles For x As Integer = 0 To sourceArray.Count - 1 myFile = DirectCast (sourceArray.Item(x), myFiles) If myFile.oldFileName.Contains(",") Then MessageBox.Show(myFile.oldfilename) etc. Another option would be to use a List instead of ArrayList and have it only contain objects of type myFiles. Kerry Moorman Show quoteHide quote "Kyote" wrote: > Sorry, but I have no idea how to phrase the subject better than that. > I've come across this a few different times and decided to ask in case > there's a way to do it. It would simplify things a bit and I figured > if anyone knows, more than likely that someone is here. > > I have a class for storing filenames and it's path along with a little > more info. Here it is > > Public Class myFiles > Public oldFileName As String > Public oldPathAndName As String > Public newFileName As String > Public newPathAndName As String > Public fileExtention As String > End Class > > Now when using functions and such that are built in and you begin > typing VS.net either pops up with what you can possibly use or you can > force it by ctrl+space. Thats pretty much what I want to do. I may be > doing something wrong that is making it so it isn't including it, but, > if so hopefully any replies will point that out to me. > > I declare a new arraylist > > Public sourceArray, directoryListing As New ArrayList > > > Then in a sub I do this > > For x As Integer = 0 To sourceArray.Count - 1 > If sourceArray.Item(x).oldFileName.Contains(",") Then > MessageBox.Show(sourceArray.Item(x).oldfilename) > Else > MessageBox.Show("No comma in name!" & vbCrLf & _ > sourceArray.Item(x).oldfilename) > End If > Next > > Ok, now when I go to typing > > sourceArray.Item(x).oldFileName > > and I get this much done > > sourceArray.Item(x).ol > > or even if I just get to this > > sourceArray.Item(x). > > pressing ctrl+space should popup, or at least I would like it to, the > possible variables/methods/fuctions/etc.. I have for that class > stored in the arraylist. Did I explain this enough for you to > understand what I'm trying to accomplish? If so, is there a way for me > to get the classes variables to popup in the drop down box of the > 'code completer'? > > Even though it doesn't automatically popup for quicker completion it > does work just fine when I run it. But my memory isn't the greatest > for all the different names and such I use in different parts of my > project and would love to have the 'code completer' assist me with > this. > > > Thank you in advance for any help anyone can provide. > > > ------- > Kyote > Please reply to the group. >
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"Kyote" <truthowl@nospamgmail.com> wrote in message Just a quick read of your example code and your desired behavior...news:4ebic2dlft3rknp3o33aq9edd03q89s3ul@4ax.com... > Sorry, but I have no idea how to phrase the subject better than that. > I've come across this a few different times and decided to ask in case > there's a way to do it. It would simplify things a bit and I figured > if anyone knows, more than likely that someone is here. > > I have a class for storing filenames and it's path along with a little > more info. Here it is > > Public Class myFiles > Public oldFileName As String > Public oldPathAndName As String > Public newFileName As String > Public newPathAndName As String > Public fileExtention As String > End Class > > Now when using functions and such that are built in and you begin > typing VS.net either pops up with what you can possibly use or you can > force it by ctrl+space. Thats pretty much what I want to do. I may be > doing something wrong that is making it so it isn't including it, but, > if so hopefully any replies will point that out to me. > > I declare a new arraylist > > Public sourceArray, directoryListing As New ArrayList > > > Then in a sub I do this > > For x As Integer = 0 To sourceArray.Count - 1 > If sourceArray.Item(x).oldFileName.Contains(",") Then > MessageBox.Show(sourceArray.Item(x).oldfilename) > Else > MessageBox.Show("No comma in name!" & vbCrLf & _ > sourceArray.Item(x).oldfilename) > End If > Next > > Ok, now when I go to typing > > sourceArray.Item(x).oldFileName > > and I get this much done > > sourceArray.Item(x).ol > > or even if I just get to this > > sourceArray.Item(x). > > pressing ctrl+space should popup, or at least I would like it to, the > possible variables/methods/fuctions/etc.. I have for that class > stored in the arraylist. Did I explain this enough for you to > understand what I'm trying to accomplish? If so, is there a way for me > to get the classes variables to popup in the drop down box of the > 'code completer'? > > Even though it doesn't automatically popup for quicker completion it > does work just fine when I run it. But my memory isn't the greatest > for all the different names and such I use in different parts of my > project and would love to have the 'code completer' assist me with > this. .... you have sourceArray defined as an ArrayList object. The Class myFiles is not referenced. That is part of the reason why typing "sourceArray." does not yield the Properties/Methods of the myFiles Class. If sourceArray were an array of myFiles, and there were Property Get/Let's for the objects in the myFiles Class, you would get the desired behavior. Assuming your myFiles Class, with the addition of Property Get/Let's, you could define sourceArray as... Private sourceArray() As myFiles You would ReDim sourceArray as needed to grow the array. There are other tricks. This is but the most simple of examples (IMO, of course). There might even be an error in the following 'cus the coffee has yet to kick in for the morning. If you haven't used ReDim on an empty array, the one thing you'll notice is attempting to detect the empty array using Nothing or UBound/LBound will not yield the desired outcome. You have to trap a runtime error condition. There is overhead with ReDim'ing arrays. If you are working with small arrays and not ReDim'ing the heck out of them the overhead should be tollerable. =====myFiles Class===== Public Class myFiles Private m_oldFileName As String Property oldFileName() As String Get oldFileName = m_oldFileName End Get Set(ByVal value As String) m_oldFileName = value End Set End Property End Class =====End myFiles Class===== =====Some other Class===== Public Class DummyForm Private sourceArray() As myFiles ' empty array, no rows defined yet Private Sub GrowArray() On Error Resume Next ReDim Preserve sourceArray(UBound(sourceArray) + 1) If Err Then ReDim sourceArray(0) ' one row array End If On Error GoTo 0 ' Do other array entry initialization stuff here including... sourceArray(UBound(sourceArray)) = New myFile End Sub End Class =====End some other Class=====
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>Just a quick read of your example code and your desired behavior... What I'm doing is adding an instance of myFiles to the sourceArray> >... you have sourceArray defined as an ArrayList object. The Class myFiles >is not referenced. That is part of the reason why typing "sourceArray." does >not yield the Properties/Methods of the myFiles Class. > >If sourceArray were an array of myFiles, and there were Property Get/Let's >for the objects in the myFiles Class, you would get the desired behavior. > >Assuming your myFiles Class, with the addition of Property Get/Let's, you >could define sourceArray as... > > Private sourceArray() As myFiles > >You would ReDim sourceArray as needed to grow the array. > >There are other tricks. This is but the most simple of examples (IMO, of >course). There might even be an error in the following 'cus the coffee has >yet to kick in for the morning. > >If you haven't used ReDim on an empty array, the one thing you'll notice is >attempting to detect the empty array using Nothing or UBound/LBound will not >yield the desired outcome. You have to trap a runtime error condition. > >There is overhead with ReDim'ing arrays. If you are working with small >arrays and not ReDim'ing the heck out of them the overhead should be >tollerable. > >=====myFiles Class===== >Public Class myFiles > Private m_oldFileName As String > Property oldFileName() As String > Get > oldFileName = m_oldFileName > End Get > Set(ByVal value As String) > m_oldFileName = value > End Set > End Property >End Class >=====End myFiles Class===== > >=====Some other Class===== >Public Class DummyForm > Private sourceArray() As myFiles ' empty array, no rows defined yet > Private Sub GrowArray() > On Error Resume Next > ReDim Preserve sourceArray(UBound(sourceArray) + 1) > If Err Then > ReDim sourceArray(0) ' one row array > End If > On Error GoTo 0 > ' Do other array entry initialization stuff here including... > sourceArray(UBound(sourceArray)) = New myFile > End Sub >End Class >=====End some other Class===== > arraylist. That way I can avoid having to redim anything and also avoid the redimming overhead. My program is going to parse filenames and create directories based on certain filename templates. Then it will move the files into the appropriate directory. The reason I'm doing it this way is because it allows me to keep all the information together and I can then send only specific parts to my parsing subs which will then add the missing information to each set of variables in each object in the arraylist. I tried to think it through and determine the best approach for doing what I wanted this app to do but I found myself not wanting to begin because I could think of so many different ways to approach it. So finally I decided to just do it and make alterations as my knowledge grew. I know that's not really a good way to go about it but this app is just a little tool to make certain things I do for a hobby of mine easier to do. The added benefit is that it helps me learn vb.net a little better as well. So, is there a way for me to get the auto complete to appear doing it the way I am? Or should I change my class to use get and sets as you suggested? ------- Kyote Please reply to the group.
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"Kyote" <truthowl@nospamgmail.com> wrote in message 'Tho I haven't done (or seen) benchmarks comparing ReDim to ArrayList, Inews:k1fkc29mgi7esrvbeae3mecalqm7tcvqnk@4ax.com... > > What I'm doing is adding an instance of myFiles to the sourceArray > arraylist. That way I can avoid having to redim anything and also > avoid the redimming overhead. > > My program is going to parse filenames and create directories based on > certain filename templates. Then it will move the files into the > appropriate directory. The reason I'm doing it this way is because it > allows me to keep all the information together and I can then send > only specific parts to my parsing subs which will then add the missing > information to each set of variables in each object in the arraylist. > > I tried to think it through and determine the best approach for doing > what I wanted this app to do but I found myself not wanting to begin > because I could think of so many different ways to approach it. So > finally I decided to just do it and make alterations as my knowledge > grew. I know that's not really a good way to go about it but this app > is just a little tool to make certain things I do for a hobby of mine > easier to do. The added benefit is that it helps me learn vb.net a > little better as well. > > So, is there a way for me to get the auto complete to appear doing it > the way I am? Or should I change my class to use get and sets as you > suggested? suspect they will be about equal since both are expanding/contracting array structures of some sort and that tends to be a memory-intensive process (relatively speaking). Actual use of the array, I suspect, will have less overhead than the ArrayList; I seem to recall ArrayList as being based on a Collection and those tend to be slow, at least large Collections and in VB classic. Tinkering with code, especially new libraries, is a great way to pick up skills and knowledge (IMO, of course). The "best approach" is the one that works for you. I sometimes find myself pondering an idea for days on end just trying to determine how I want to structure the solution. When it comes time to write the code though it is not unusual for the whole idea to go south and I end up falling back on old solutions. (Ah, but it is all about the hunt. That's why they call fishing "fishing." If it were about actually catching fish it would be called "catching.") Some people (me) absolutely love to stumble around in the dark just for the challenge. Others prefer the safety of a guided tour. Flailing around in code allows you to discover alternative ways of accomplishing the task and, in the process, generates far more intimate knowledge of the things you touch along the way than any book or "expert" site can provide; the knowledge sticks if you uncover it on your own and yields a certain satisfaction once a solution is discovered. But enough of the soapbox speech... The only ways I know of that will give you the "auto complete" are defining an object as a Class, a Structure (Type in VB classic), or an Enum. Since your needs seem to indicate the "thing" requires validation routines and other supporting code specific to this type of object, I would personally use a Class. How that works in conjunction with ArrayList, I don't know (yet). There is probably a slick trick, not necessarily inheritance, that will allow you to use the Class with ArrayList yielding the best of both worlds. For now, the question you have to answer is which of the two - auto complete or ArrayList - is of more value to you at the moment. 
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