Reflection - Loading XML Files Into .Net Structures?
Aug 20, 2010
I have many, (15-20) different XML files that I need to load to VB.Net. They're designed as they would be in a database; they're designed in Access and bulk exported into XML files. Each file represents a different table in the database.Now, I need to load this information into VB.Net. Initially, I'd love to use DAO and access the MDB directly via queries, but this won't be possible as I'm making sure the project will be easily ported to XNA/C# down the road. (Xbox 360 cannot use MDBs, so I'd rather deal with this problem now than down the road).
So, I'm stuck now trying to figure out how to wrangle together all of these XML files together.I've tried using Factories to parse each one individually. E.g., if three XML files contain data for a 'character' class, i'd pass in an instance of Character to each XML factory and the classes would apply the necessary data.I'm trying to get past this though, as maintaining many different classes with redundant code is a pain. plus it is hard to debug as well. So I'm trying to figure out a new solution.
The only thing I can think of right now is using System.Reflection, where I parse through each member of the class/structure I'm instantiating, and then using the names of those members to read in the data from that element of the XML file.However, this makes the assumption that each member of the structure/class has a matching element in the XML file, and vice-versa.
View 2 Replies
ADVERTISEMENT
Jun 18, 2008
i am writing a simple games client using an XNA 2.0 engine to play games. The games are written in dll files and the client uses the assembly.loadfrom method to read and execute the games accordingly...Now this all works fine on my computer and my laptop. However when i give it to my friend he gets this error and the dll doesnt load - "Unable to load one or more of the requested types. Retrieve the loader exceptions property for more information"
View 1 Replies
Oct 3, 2007
I am working on a program that requires me to load 2 dll at runtime.My code is as shown below:
View 2 Replies
Dec 23, 2010
I coded anything but I remember when using VB6 or Pascal/Delphi we used to define records/ structures with fixed length fields, then write those structures to a file knowing that they would always be the same length. You could then open a particular record within the file or simply find out how many records existed by reading the file length.From what I understand, it seems that such methods are depreciated in VB.NET and such structures are written as a stream.Does it now mean that we can define things like variable length strings and not need to worry about buffers or boundaries?Is it possible to read through such files and pick out individual records? Are there methods of determining how many records that exist in a file? What I'm looking to do is simply store multiple records of a structure in a file then retrieve them into an array so I can manipulate their order by sorting the array and search within the array. This is only a learning project so it is unlikely that the resultant array is going to be large, although if this is not generaly a good method of doing this then it might be interesting to fidn out what is. So far, I have read that they way to write a structure to a file is to "serialises" it and then write the bytes - is this correct?[code]
View 5 Replies
Jan 20, 2009
I have a structure called 'Scheme' and in my program I want (ideally) an ArrayList of 'Schemes' (so i can add, remove schemes etc.). However, within the 'Scheme' structure, I want to have an ArrayList of 'Item''Item' is another structure. Are there any solutions out there for iterating through these arrays quite easily?
How can I easily add multiple Items to a Scheme and mutliple Schemes to my Scheme array. Code is below. When I try to add Items to a Scheme, I get the 'Object not set to a reference of an object, try the 'New' keyword', but you cannot declare 'New' keywork within a structure.
[Code]...
View 4 Replies
Jan 2, 2012
It looks like an array of byte only uses a 32bit length and cant hold more than 2GB why is it not a 64bit length when the project is 64bit, how can I load bigger files?
View 10 Replies
Jun 2, 2010
I read in the Book "Mastering Microsoft Visual Basic 2008" about "User-Defined data types".The example given is creating a Structure as follows.I wanted to check that so I wrote all the code given; I used a TextBox and a Button for this.(I didn't include the "CheckDate" here; that is in the book)
Structure CheckRecord
Dim CheckNumber As Integer
[code]....
The problem is this does work.What I get is "00000". and I found out that the "Checks(4)" Array does hold any value ie: on keeping the cursor over that, it shows "CheckAmount 0.0, CheckNumber 0 , CheckPaidTo Nothing ".
View 1 Replies
Sep 15, 2009
Is there a dialog box for loading files, the same as the savefiledialog? I know how to load a file once I know it's name/location, but how do I open up a box to allow my user to select a file from the drive?
View 6 Replies
Dec 29, 2011
I have a folder in my computer with several txt files, I need to know if is possible, how loading each files in alphabetical order in a textbox.
For example this list of txt file :
1-allvisualbasiccodes.txt
2-bbcode_php.txt
3-commoncode.txt
I want load these files with a timer one each time interval.
View 5 Replies
Apr 16, 2010
I am trying to make an application that will load any Javascript file into a rich text box.
[Code]....
View 5 Replies
Apr 19, 2012
I use to code looooong (98ish)ago in Visual Basic 5 but I haven't touched it since 2000. Well now im back and I must say i quite rusty!!Here is what I need help with. I've successfully created a save command for a Comma-Delimited txt file. My problems come from when I try to load the file, I can load the first line just fine. But multiple lines are going to be an issue. I don't quite understand how to tell the program to go through each line.[code]
View 1 Replies
Dec 22, 2009
call form1.axshockwaveflash1.loadmovie(1, application.stratuppath + ("swfsStart.swf"))
but when i publish the trainer, and open it through either the clickonce application, or the setup, it can't find the swfs folder to get the .swf files. Therefor the trainer will not work.
View 3 Replies
Apr 4, 2011
In the game I'm making I have a background worker thread simulating the game and constantly outputting data to a file.I want to be able to access that file while simulation is going on. I understand that you can't access the same file simultaneously in two threads so I don't mind having the program (say on a button click) wait until the simulation isn't using the file.I can't seem to do that though! Whenever I either save or load the file I have a bolAccessingFiles variable which I check to make sure things don't happen simultaneously. I change the value to True just before opening any files and False just after closing any files.
This doesn't seem to work though. It seems as though the computer will still be using the file in some way even though the code has kept going. I need that when I next access the file I have a stronger way of checking if the file is already in use, and if so make it wait."The process cannot access the file 'C:UsersDavidDocumentsVisual Studio 2010ProjectsGameGameinx86Debugoutput.txt' because it is being used by another process."
View 4 Replies
May 23, 2009
I can't find any way of loading all files with e.g (.txt) from a specific directory: C:UsersChristianDocumentsMy Logs I use Visual Basic 2008 .NET, this is how I try to get it:
1. When the form loads it should retrieve the full path and title of the files and then put them in the List View control.
2. When the user marks one file in the list view and then clicks a button the text content should be displayed in a multi line textbox.
[Code]...
View 2 Replies
Jan 12, 2009
I need some help loading RTF files in a RichTextBox Control. The RTF file i have has a lot of textbox and some graphics. I tried several methods, but i cannot load the RTF file correctly.Here is what i have so far:
Code:
Private Sub btnLoadFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLoadFile.Click
Dim fn As String
Try
[Code]...
I suspect that the LoadFile method cannot read the TextBoxes in my RTF file, or maybe i'm missing something. Attached is the file i'm working on.
View 2 Replies
Apr 12, 2011
I've written a loading program that writes text files to our database. The text files are dumped by another system every 2 hours onto on a shared network drive at my work. Here's the problem though - the files don't have a date/time stamp within them. I've been getting the date for each file from the creation date. That works okay, but when I've written loading programs in the past, I like to move the loaded files into a folder called "Loaded Files". That way, I can quickly see visually how many files I've loaded vs how many have not be loaded.
The problem this time, is that if I were to move the file into another folder, the creation date changes...a lesson I learned when I copied all of the files into a directory on my C: for testing. They all had the same date/time stamp!My question is, what's the best way to handle this? I don't want to move the files after loading them if it alters their creation date. I mean, what if I have to go back and load one for some reason, the date will be lost forever. I also don't want to write something into the software that has to check a file each time before loading it to the database.
View 2 Replies
Jan 6, 2012
First off the Treelist does not display data until it is almost finished loading the files. I tried to refresh the treelist but it still does the same.
Private Sub BtnBrowse_Click(sender As System.Object, e As System.EventArgs) Handles BtnBrowse.Click
Try
If FolderBrowserDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
' List files in the folder.
[Code] .....
View 9 Replies
Mar 23, 2011
I'm loading a folder (path), which contains folders and files, in a treeview according the combobox-text.
When I load the app. the combobox is filled with the paths. I'm using the SelectedIndexChanged to load the treeview. Everything works.
The issue is that it also starts to load the paths the treeview also gets loaded (slow), but it should only load when I select an item in the combobox.
I tried comboboxselectedtextchanged etc, but without any luck. Besides that loading the files and folders is slow.
View 2 Replies
Jul 20, 2009
I'm attempting to create a list of structures that contains a list of structures. I can't seem to figure out how to properly allocate the object for the inner list of structures. I expect the outer list of structures to have a couple thousand entries and the inner list of structures to be fairly small at 2 to 10. Both lists will grow over time but the number of elements within the inner list will be constant for an instance of the outer list. Meaning, if an instance of the outer list has 2000 entries each of those will have the same number of elements on the inner list, say 4 entries.
Here is a simplified code fragment. This fragment makes no attempt to create the instance of the inner list "StructBlist" since I can't figure out where to put it. Tried "New List(Of StructB)" in the declaration as well as "Alist(0).StructBlist = New List(Of StructB)" but neither works.
Public Class Form1
Structure StructA
Dim FieldA1 As Integer
[Code]....
View 5 Replies
Jul 10, 2010
I'm fairly new to VB.NET, and I'm working on a text editor with a tabbed interface. I deal with large text files. Should I have each tab / text document open up in a new thread or a process? I basically want the entire application to always run fast as the text editor is just one part of it. If I have several large text files open I don't want the rest of the application slowing down a bit.
View 2 Replies
Jul 13, 2009
I have a window application develpoed in vs 2008, framework 3.5, in which i have put a button.. Now where i click that button the other text boxes are filled up with the data from database thru web service.. what i want is while all text boxes are being filled i want to show an animated loading gif image till data loading is completed in all the text boxes.. i have tried to use image picture box but while data is loading gif image is displyes but in static mode.. cant see animation... i think this is because data loading and animation both are done thru one UI thread..
View 8 Replies
Mar 28, 2010
What is the different between these 2 structures?
Structure INPUT
Public dwType As InputType
Public mi As MOUSEINPUT
Public ki As KEYBDINPUT
End Structure
[Code]...
View 1 Replies
May 14, 2011
Structure TextureStruct
Dim unk1 As ULong 'always 0x70007
Dim unk2 As ULong 'always 0x70007
Dim unk3 As ULong 'always 0x70007
Dim unk4 As ULong 'always 0x70007
Dim unk5 As ULong 'always 0x70007
Dim unk6 As ULong 'always 0x70007
[Code]...
View 4 Replies
Jun 5, 2010
Is it possible to declare a new list inside a structure.
I'm trying to get a list of structures that each contain a list of points,
but when i try to declare a new list inside the structure VB says "keyword not valid as an identifier"
View 2 Replies
May 24, 2009
I'm currently doing this project where i have to create a program that let's the administrator manage students (and their tests.) I have decided to use Random Access file in this project.because structures will need fixed lengths...i don't know how will i search through the students (a function of the program) when each student structure has a different length because of the number of tests they've done.* I have created a variable in the aStudent structure so that i can know the number of tests a student has done...but don't know how to use it.
Public Class FormAdmin
Dim currentStudentName As String
Dim currentStudentID As Integer = 0
[code]....
View 3 Replies
Jun 18, 2011
I have created a structure as below. I want the structure to be an array...so I can use a call like picks(1).a or picks.a(1) = blah blah. I don't understand how to use an array of a structure..
Public Structure apicks
Dim a As String
Dim b As String
End Structure
View 3 Replies
Mar 8, 2010
I have been trying to read the cd toc in one go from the API, I can read it OK with a single byte array, but I can't find a way to fill the formatted arrays
Code:
'ORIGINAL STRUCTS
'MAXIMUM_NUMBER_TRACKS = 99
'typedef struct _CDROM_TOC {
' UCHAR Length[2];
[code].....
View 2 Replies
Jun 2, 2011
an application i developed using vb 2008 express, to fill a web form with data from an access database, one after another when a button is clicked hasn't given me what i expected. the loop was suposed to stop after filling web form with the first data on clicking a button and continue to fill the webform with the next(2nd) data from the database on clicking the button again. Below is the code i wrote
Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e
[Code]....
View 2 Replies
May 22, 2011
what is the best way to add, delete elements from arrays of structures structure
vb
Structure Proxy
Dim Server As String
[Code].....
View 7 Replies
Jan 21, 2010
I am currently working on a project for myself which looks through employee's information to find their availability to work. I've tried making a structure which holds the employee's information but I can't think of a good way to create different instances of it and store information in it at runtime. I'd prefer to load the information in at startup and not have to declare each employee and information. I am very new to Visual Basic 2008 but I have a good grasp of arrays from C and C++.
View 3 Replies
