Serializing Linked List Into Xml?

Feb 26, 2009

I badly wanna Serialize a Linked List into XML and deserialize it back when required. I didn't get proper results when i did google. But, I learnt through the following link that it's not possible to do so. [URL]

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.net - De-serializing A Space Delimited String Into A Generic List?

Oct 19, 2011

I have an xml file with elements that look like this (abbreviated for clarity):

<post id="1" tags="tag1 tag2 tag3 tag4" />

I want to map this to the following class using Xml Deserialization, but I can't find a way to map the tags attribute to an actual List(Of String).

<Serializable()> _
<XmlRootAttribute("post")> _
Public Class Post

[Code]....

Is there any way to override the default Deserialization?

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Enum Value Not Serializing Correctly When Converting A Generic.List(Of CustomClass) To XML

Aug 6, 2010

I have a Generic.List(Of ImportedVehicle) - ImportedVehicle being a simple class as below.There is an enum property which is marked as public.When I serialize to XML using an XMLSerializer, the enum's value is just set to it's default value (which is NotAllocated) and doesn't actually represent the value that is set in code.[code]

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Add Objects Into A Doubly Linked List?

Dec 7, 2011

I have a VB 2010 class like

Public Class cStar
Public Name As String
Public Magnitude As Single
End Class

I want to add stars into some doubly linked collection or list that is ordered by magnitude.

I tried to create my own list cList based on collection

Class cList Inherits collection error - collection not inheritable End class

I had hoped to enable things like

Dim Star1 as cStar
Dim Star2 as cStar
cList.AddFirst(Star1)
cList.AddLast(Star1)
Star2 = cList.Behead

[Code]...

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Finding Length Of Linked List

Mar 30, 2009

so i have a linked list of employee objects. I now need to iterate through the linked list to see if i can find a matching object. I could iterate though using the [code] What i'm not sure of is how i get the employees[x].EMID out to check it

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Double Linked List - NodeLink Function?

Apr 29, 2011

I have a question about doubly linked list the uses student names and ages and creates them into node objects. the studentItem class is already created for me I just have to create the nodes that will hold each item entered. I am required to fill in the code needed for each function givien in the ICollections library that is setup for me. I dont know where to start out I'm trying to create a NodeLink class and from the class use the information to create the guts for the add function for my Nodelink Function I have the following:

Public Class NodeLink(Of T)
Public node As T
Public NextLink As NodeLink(Of T)
Public PrevLink As NodeLink(Of T)
Public Sub New(ByVal StudentItem As T)
[Code] .....

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Remove Spicefic Node In Linked List?

Oct 23, 2009

I am nobies in data structure and i really want to know how to remove specific node in linked list in vb.net

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Sorting Thousands Of Records - Linked List?

May 6, 2009

I'm looking for a simple and efficient way to sort up to 60,000 strings that are 3000 chars long in reverse order and save them back out to a text file.

I originally thought of a doubly linked list, but then I realized that we aren't privileged enough to have pointers.

Is there some other way I can create an efficient linked list without pointers?

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Transform Or Copy An Array To A Linked List?

Jul 2, 2010

I need to copy an array to a linked list OR transform the array in a linked list.How this can be done in .NET (C# or VB)?

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Create A Linked List And Add/remove Items With A Push/pop?

May 14, 2011

I'm supposed to create a linked list and add/remove items with a push/pop. Currently I can only push 2 items and pop one before it stops, and I'm not sure what I need to do to fix that.

[Code]...

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Rebuild Array Versus Linked List Traversal?

Mar 11, 2010

I have been working on a number of card games. Important, of course, is shuffling the deck.I have come up with a few different ways to do this. Currently I do not shuffle, but to deal a card, I lay out the deck in order, selecting a random number between 1 and the number of cards remaining and selecting that card. I then remove that card from the deck so that another card can be picked.There are two main ways to do this, and I am trying to figure out which one is optimal.The first is to have an array of cards. When one card is dealt, a new array is formed with that card missing. I kind of like keeping the array size exactly the size of the deck, but perhaps this is not efficient. So, the first array has length n and the new array after the card is dealt has length n-1. VB.Net makes it simple to change array sizes around like this.

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Update Records In An Access Table Linked To A SharePoint List From VB?

Jan 23, 2012

I am writing a small program to update data in a SharePoint list. Now where I cannot develop or use applications for SharePoint unless I am on a SharePoint server, I thought I would cheat the system by using Access to link to SharePoint lists, and then use Visual Basic to play with the Access tables. I need additional functionality other than what VBA can provide me, so that is why I am using the VB layer.Is it possible that this is not permitted? Whenever I try to update an item in the table, I receive the message: 

"cannot update '(expression)'; field not updatable" 

The word 'expression' here is not a filler I added, this is the actual error.If I try to make the edit manually in the table using Access, it works fine (I haven't tried it through Access VBA yet...).

How my code works is this:I have a Dataset added to the project which connects to the Access database. I add one of the tables to the dataset and create a Class object to reference the table adapter (essentially a Data Access Layer). I can read all of the data fine, and when a change is made in SharePoint, my application sees the updates when it refreshes. But when I try to write back to the table I get the error message above. 

For
Each r As
DataRow In TableAdapter.GetData.Select("Name LIKE '*" & FileName &
"*'")

[code]....

There are other columns in the table and some of them have default null values. I only want to update these two fields, but it almost seems like this is not possible. I thought I might be somehow opening the Dataset in a Read Only mode, but I can't seem to find that option anywhere.

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Overload Resolution Failed Error On Attempt To Add Item To Linked List

Apr 25, 2011

This overload resolution failed error that occurs when I try to add the newly created integer array as an item in a generic linked list as per the following?

Imports System.Collections.Generic
Public Class GraphData
Dim mInput As Byte()
Public Data() As Integer
Dim SignalData As New LinkedList(Of Integer)(Data)
Private Sub Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
[Code] .....

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VS 2008 Connecting To A Sharepoint List Linked Table In Access 2007

Apr 30, 2011

First timer here, I love the site!

Running:

- VS 2008
- Sharepoint 3.0
- Access 2007
- Windows Vista (The machine I'm developing it from)

History: (Do excuse me if I don't reference different methods I've taken so far correctly, I'm still learning!) I am building some search software for a law firm that I work for in Australia. It's all coming along really well, but I seem to have hit a snag getting data out of sharepoint lists and into my project!

I first attempted to add a web reference to sharepoint and after a while was able to pull in all of the data from the lists, fantastic!(OR NOT!). The issue then was when I attempted to load it up into an array using XMLNodes, whilst it loaded up fine and I could see all the data, if there was a null value in one of the columns, it wouldn't pull that null value across, therefore, I couldn't really use the data...

[Code]...

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VS 2010 Clickable List Of Custom Colours Linked To Text File?

Aug 21, 2011

I would like to create a little list in my Windows Form showing a list of custom colors with their 'friendly names'. Technically it can be anything (ListBox, ListView, Panel etc... whatever).

I simply want it to look something like this:

I would like to store data for this list in a simple TXT file in such form:

Quote:

Blue,Blue
Red,Red
#F6A118,My favourite color
#004080,Another color

And of course I would like each element on such list to be clickable, so if I'd click 'My favourite color' it should return the color's HEX value (#F6A118).

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VS 2005 Load Database Table List, Including Linked Tables, Into ComboBox?

Apr 9, 2009

I need to load a list of tables and linked tables in an MS Access Database into a combo box. I have this.

vb.net Imports System.Data.OleDb

[Code]...

1. How do I load the access tables and the link tables into my combo without the system tables showing up?

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Serializing And De-serializing Objects?

Feb 27, 2011

I am having problems with serializing and de serializing my objects.The following is my code for serializing buttons and labels which I have in my form.

Dim nodes As New List(Of nodeclass)
Dim objStreamWriter As New StreamWriter(filelocation)
For Each btn As Button In myNodeBtns
Dim u As New nodeclass

[code].....

I get an error: There is an error in XML document (20, 3).Now I have found out that this is because I have 2 root elements and 2 xml declerations. When I save the xml for the button and te xml for the label in 2 different files, I have no problem. However I have no idea how to go about saving the xml for both of them in the same file and deserializing it back.

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Serializing An Arraylist?

Mar 30, 2011

I have just finished my application and am stuck as to how I'm going to store my data. As it stands I have multiple objects that I created but each of them take multiple ArrayLists as properties. I'm aware that this will give problems if I try to serialize my data?

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Serializing An ObservableCollection(of T) In .Net?

Oct 9, 2009

I'm trying out MVVM in VB.Net for a while now and started out with some of my entities using List(of T)s, which I xml serialized to disk. Now, I updated the classes used by the Lists to implement INotifyPropertyChanged so I also changed the List(of T)s to ObservableCollection(of T)s.After which, the XML serializer stopped working :'( A colleague told me that ObservableCollections, unlike generic Lists, are not serializable.If so then how can I make them Serializable?

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XML Serializing Delegates

Feb 10, 2010

I have a class that I want to be serializable but contains a public instance of delegate that, apparently can't be serialized: [Code] Is there a way to make it serializable however?

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.net - Serializing Type Definitions?

Apr 29, 2010

I'm not positive I'm going about this the right way. I've got a suite of applications that have varying types of output (custom defined types).For example, I might have a type called Widget:

Class Widget
Public name as String
End Class

Throughout the course of operation, when a user experiences a certain condition, the application will take that output instance of widget that user received, serialize it, and log it to the database noting the name of the type.

Now, I have other applications that do something similar, but instead of dealing with Widget, it could be some totally random other type with different attributes, but again I serialize the instance, log it to the db, and note the name of the type. I have maybe a half dozen different types and don't anticipate too many additional ones in the future.

After all this is said and done, I have an admin interface that looks through these logs, and has the ability for the user to view the contents of this data thats been logged. The Admin app has a reference to all the types involved, and with some basic switch case logic hinged upon the name of the type, will cast it into their original types, and pass it on to some handlers that have basic display logic to spit the data back out in a readable format (one display handler for each type)NOW... all this is well and good...Until one day, my model changed. The Widget class now has deprecated the name attribute and added on a bunch of other attributes. I will of course get type mismatches in the admin side when I try to reconstitute this data.

I was wondering if there was some way, at runtime, i could perhaps reflect through my code and get a snapshot of the type definition at that precise moment, serialize it, and store it along with the data so that I could somehow use this to reconstitute it in the future?

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C# - Comparison Of Serializing Methods?

Dec 25, 2011

Possible Duplicate: Fastest serializer and deserializer with lowest memory footprint in C#?

I'm using BinaryFormatter class to serialize an structure or a class. (after serialization, I'm going to encrypt the serialized file before saving. (And of course decrypt it before deserialization))But I heard that some other serialization classes are present in .Net Framework. Like XmlSerializer, JavaScriptSerializer, DataContractSerializer and protobuf-net.I want to know, which one is best for me?Less RAM space needed for serialize/deserialize is the most important thing for me. Also speed is important.

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Databinding To A Numbericupdown And Serializing?

Oct 8, 2010

I have a class:

<Serializable()> Public Class data
Public _needleCount As Integer = 1
Public percent As Double = 100.0
Public table As DataTable
Public part As String = ""

[Code]...

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Serializing A Custom Type?

Jul 8, 2011

it works perfectly.

Dim XmlFile As FileStream = New FileStream(path, FileMode.Open)
Dim Serializer As XmlSerializer = New XmlSerializer(GetType(gpxType)) ''here I get error
Dim GPX As gpxType = New gpxType

[code].... 

I get InvalidOperationException was unhandled. Whats wrong?

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Serializing An Array Of Objects?

Apr 5, 2009

I'm struggling with this Serializing of Data. and I've checked out the MSDN, and saw the Serializing an Array will make the out put like this:

[Code]...

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Serializing XML With Strange Namespaces?

Jul 14, 2011

Question: How does the class for the serialization of this XML content look ?

<?xml version="1.0" encoding="utf-8"?>
<vcc:CreateTextSearchResponse xmlns:vcc="urn:veloconnect:catalog-1.1" xmlns:vct="urn:veloconnect:transaction-1.0">

[code]....

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.net - Serializing An Extended Form Object?

Jun 2, 2010

I've been reading up on this whole subject, but I never came across this specific problem. I already understand that the whole idea of serializing an entire form is a horrible idea and just doesn't work. But, I am encountering a bit of a different problem. I have a class that inherits the "button" form object, that I call DataButton.

Now for my problem. I want to be able to serialize this class, but I don't need any of the information from the actual button class. Is there any way to bypass the fact that I can't set the button form object to Serializable() and notify VB that when serialization is to occur, it should simply skip over that information? Theoretically, if such a procedure were possible, I'd be able to do the entire serialization without a hitch.

I came up with the idea earlier of removing the "inherits" feature from the class, and having simply a button within the class, but that makes my program really difficult to work with as I am constantly changing the location, size, backgroundImage, text, and whatnot. Thus, immediate updates would be much tougher to work with.

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Optimize Classes Before Serializing And Saving

Oct 24, 2010

Often it is very usefull to save data as a class by serialize and compress it. From few experiments I have noticed that
Class A
Public name as string
Public List as new list(of string) <---- empty
End Class

Class B
Public name as string
Public List as list(of string) <----- not instantiated
End Class

If I serialize and compress the 2 classes the class B uses less spaces once serialized and compressed. This suggests me that if a class contains a list that is instantiated but empty it is better to set that to nothing and reset as new when it is decompressed and deserialized. Is there any dll that optimizes a class to be stored (serialized and compressed) and restore it when it is decompressed and deserialized?

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Remove Xsi:type From Generated Xml When Serializing

Oct 5, 2011

I am sending XML externally. One of the node called "datafield" has an element called "value". This may contain normal text content, or an html content (which I need to wrap in CData). So, I created a base class (ProvisionDataField) with 2 classes inherits from it (ProvisionTextField, and ProvisionCDataField) as follows:[code]

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Serializing A Generic Collection With XMLSerializer?

Jul 11, 2009

Why won't XMLSerializer process my generic list?

Sub Main()
Serializing()
End Sub

[Code]....

I get an exception on the "Dim ser" line, saying "Testing.Module1 is inaccessible due to its protection level. Only public types can be processed." ("Testing is the name of the application, and "Module1" is the name of the module; this is a console application).

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Serializing Collections To Binary File?

Mar 17, 2011

How to serialize a collection to a binary file?
Structure MainServerInfo
Dim Name As String
Dim IP As String
Dim Uname As String
Dim Pass As String
End Structure
[Code] .....

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Serializing Multiple Objects Internally

Nov 11, 2009

I am in the process of writing a base class for gadgets that will be displayed on a form.I want the gadget to be fully self contained and reusable.At this point it does everything that I need it to do EXCEPT, i'm having trouble figuring out a creative way to serialize my objects using only one object.I have a feeling the answer lies somewhere within the context of using shared functions but I'm having trouble wrapping my mind around it.

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Serializing Serveral Objects Through NetworkStream?

Jan 4, 2010

I apologise if this thread has been posted in the wrong section I was not certain whether it was the serialization or the networking that was causing this problem, but I feel that it is likely that it is the serialization.I am currently building two applications a client and a server, where several objects have to be sent between the applications, a couple objects each way.The applications are called "ACME Server" and "ACME Client" (yay for originality).

While I can get the first object to be transferred from the client to the server, but I can't get the second object to be transferred successfully from the server to the client, the error is occurring in the client program, I have taken a printscreen of the error that I am receiving, which I have uploaded to [URL]..All objects that are being sent are serializable (well there is an Interface called Action which I am unable to make serializable I believe due to it being an Interface).

[Code]....

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Serializing/Deserializing A 2- Dimensional Array

Apr 21, 2009

I have a Problem Serializing and Deserializing a 2-Dimensional Array. I have a 5x5 Integer Array and want it to format it into one String (like Base64) to store it as an Attribute in a XML-File.

To store it i use this code:

CODE:

To Read and Format it i tried following :

CODE:

But Deserialize only Returns an Integer not an Array. How i can Deserialize an complete Array ?

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Xml - Error Serializing Linq Result?

Dec 2, 2010

I'm trying to serialize a LINQ result in this way:

Private Sub btnXML_Click(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles btnXML.Click
Try

[Code].....

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Infinite Loop When Json Serializing A Collection

Sep 1, 2010

I am trying to use a Web Service to return Json for a Collection of Users from a Database Table. I'm only new to .NET (< 1 week experience), and I don't want to use the UpdatePanel for AJAX. I have tried using the JavaScriptSerializer as well as Json.NET to serialize. Both cases seem to spawn an Infinite Loop.[code]

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Difficulties Serializing Classes With Attached Events

Jan 27, 2010

Surprised this question has not been asked yet here, but here goes: Serialization in VB.NET is a bit of a pain. If you use the standard Serializable() attribute, and attempt to serialize a class that has events which are attached to handlers, it will attempt to serialize the handlers as well. Coming from a C# background I am not used to dealing with this problem, and the best solution I can find is using a class off of CodeProject.

[Code]...

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IDE :: Visual Basic IDE - Public Class Serializing

Feb 10, 2010

how can i sereailize a public class?? and make it <serializable()> _

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Serializing System.Data.OracleClient.OracleCommand To XML?

Oct 8, 2009

Trying to write a list of oracle commands to XML but keep getting this error. "There was an error reflecting type 'System.Data.OracleClient.OracleCommand'."

Friend Sub WriteDataToFile(ByVal Commands As List(Of System.Data.OracleClient.OracleCommand))
Try
Dim PathName As String = OffloaderDataPath() & "Commands " & Now.ToLocalTime.Ticks.ToString & ".XML"

[code]....

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VS 2008 (De)Serializing Multiple Objects Into One File

Dec 21, 2009

I am trying to create a load and save function for my customizable Menu/Tool/StatusStrip controls (see signature). Those three controls use a single AppearanceControl class, which is mainly just a large list of properties (Colors) which control the colors of the Menu/Tool/StatusStrip.

I want to be able to save and load the values of these properties so the user can store them and load others with ease. Serialization seemed the obvious answer, although I never used it before.

Now, there is a slight problem that I cannot serialize Colors, so I simply gave each Color property the XmlIgnore attribute, and created an Integer property that gets and sets the Color property (using Color.ToArgb and Color.FromArgb). This way I can serialize the color properties succesfully.

Then, there is another problem. The properties are not all in the AppearanceControl class. Instead, the AppearanceControl class has a large number of subclasses, which in turn contain the color properties.

As a small example, I may have this:

vb.net
Public Class AppearanceControl
Private _toolStripColorProperties As ToolStripColorProperties
Private _menuStripColorProperties As MenuStripColorProperties

[Code]....

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VS 2008 Serializing Serveral Objects Through NetworkStream?

Jan 4, 2010

I am currently building two applications a client and a server, where several objects have to be sent between the applications, a couple objects each way.The applications are called "ACME Server" and "ACME Client" (yay for originality).While I can get the first object to be transferred from the client to the server, but I can't get the second object to be transferred successfully from the server to the client, the error is occurring in the client program,I have taken a printscreen of the error that I am receiving, I have uploaded to [URL]..

All objects that are being sent are serializable (well there is an Interface called Action which I am unable to make serializable I believe due to it being an Interface).

[Code]...

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File I/O And Registry :: Serializing And Deserializing An Array Of Collections

Aug 28, 2011

I'm developing a program that captures a bunch of information entered by a user on a tab form into five different structured arrays. I want the data to be saved into a single file and reloaded by the program into a similarly built series of structured arrays through a different form.If I understand the process of serializing collections right, I create a single ArrayList variable to capture each of the five Structured arrays.[code]

1. Do I have to declare one variable of the same type as the one in the first element of the ArrayList, or does having the public variable declared in the Class that's going to take this information already cover that?

2. Once I deserialize into the newly declared Rules ArrayList in the new form, is it a simple matter of setting the duplicated variables in the new form equal to the relevant element in the ArrayList? For example, if I have a new Public Roster As RosterDesc variable declared, can I set it equal to Rules(0) and it would automatically populate every element in the same order as they were created in the original form?

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Serializing Data - Unable To Cast COM Object Of Type

Feb 4, 2010

I'm having a real problem with serializing data. I understand that its designed to basically copy the structure and data of a structure. In my case, I have the state of a DVD that i would like to save (persist) to disk. [Code] error: 'Error Generating XML', Inner Exception: "Unable to cast COM object of type 'System.ComObject' to class type 'DirectShowLib.DVDState'.

COM components that enter the CLR and do not support IProvideClassInfo or that do not have any interop assembly registered will be wrapped in the ComObject type. Instances of this type cannot be cast to any other class; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface."

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Serializing To Binary Formatter A Complex Object With WPF Classes?

Feb 17, 2012

i have a complex object that holds a WPF Canvas with many child canvases, rectangles and, lines. The object includes some home grown classes as well. The main object and the home grown classes have the <Serializable()> attribute set. I tried the general formatter.Serialize(strm, rb_x) to serialize the object to a memory stream. I then found out that WPF classes are set as serializable. So after some research I discovered the System.Runtime.Serialization and found a generic Serialization Surrogate.So after some debugging I was able to serialize the object to a memory stream then copied the stream to an array of bytes then store that array in an OLE field in an MS Access table.

When I read back the access record and copy the OLE field byte array back to a memory stream and then de-serialize it back to the object I get a SerializationException "Error binding to target method."

So question #1 - is what I am trying even possible?Question #2, (assuming #1 is yes) do I need to do something special with WPF Baml type objects.

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VS 2008 Option To Serializing A Non-Inheritable Third-Party API Class?

Jul 19, 2011

this is an interesting problem and to be honest, I'm not sure there's a solution to it. But thought I'd ask the brain-trust here and see what comes up.I'm developing a dll that is loaded and ran within a third-party application. The third-party company provides an API to use that leverages their application's internal objects so that I can automate our processes. It's really pretty slick. They have a class object that represents the internal structure of their supported documents, appropriately titled Database. I would like to serialize the Database class using the ConfigurationConverterBase (to create a TypeConverter for conversion to and from) in conjunction with custom configuration elements and properties to store this information and retrieve when necessary. I've created the converter and all the necessary code for the custom configuration process. And it all works like a charm with one exception... the Database object does not have the Serializeable attribute applied.

Since I don't have control over the API they developed, I cannot simply add it. And since it is sealed, I cannot inherit it. This leaves me with an ugly option of converting the document to a temporary file that is a text-based version of it, then streaming it into memory before creating a binary format that can be saved into the config file. This is an ugly approach, but will get the job done.

Does anyone know how to work around the original issue for a more streamlined approach?

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