Read/write From/into A List Of Dictionary?

Jan 11, 2012

i want to know how to manipulate the data from a Public ListD As New List(Of Dictionary(Of String, String))meaning read/write I've tried with ListD.Add("string_as_key", var_as_value) but it haven't worked?

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Copying Every Value Of One Dictionary List To Another Dictionary List?

Feb 26, 2010

How would I go about copying every value of one Dictionary list to another Dictionary list.

Here is what I've done:

VB.net
' Assign values to player pairs enumeration
Private Enum cmptrPairsList
empty = 0

[code]....

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Write Dictionary Or String To XML?

Jan 15, 2012

I am looking to write the contents of a dictionary to XML. I have written the dictionary contents to a string as i have been told it is easier to write from a string to XML instead of from a dictionary. But im not sure if this is correct?

Is there any way to write this to XML from the dictionary or string?

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Write The Contents Of A Dictionary To A Message Box?

Jan 5, 2012

I'm struggling to write the contents of a dictionary to a message box. Ideally I'd like to write the contents to an XML file, but I'm having difficulty even writing the contents to a message box!Im using basic code to get me started....

Dim users As Generic.Dictionary(Of Integer, String)
Dim x As New Dictionary(Of Integer, Users)
x.Add("1", New Users("1", "Joe"))

[code]...

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String - Write The Contents Of A Dictionary To A Message Box?

Jan 9, 2012

This code has changed and will be applied to another question

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Write The Value Of A Dictionary To A String, Where There Are Multiple Items Associated With Value

Jan 12, 2012

I was wondering if it is possible to write both the dictionary key and all records associated with the value to string?

However i only get the output of the Key and one item in value (service status)

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Write A Dictionary (collection) Object To File (2010)?

May 4, 2012

I am attempting to write a Dictionary Collection to a file.The Collection is structured like so:

GlobalCollection (Collection of TestCollection)
(0)
[KEY]

[code].....

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Can't Get A List(Of <my Class>) From A Dictionary In .NET

Jun 11, 2010

I have a Dictionary with key of type UInteger and the value is List(Of Session) where the (Public) class Session contains a couple of variables and a constructor (Public Sub New(...)). Some of the variables in my Session class is:

Private count As Integer
Private StartDate As Date
Private Values As List(Of Integer)

and a couple of methods like:

Friend Sub Counter(ByVal c as Integer)
count += c
End Sub

There is no problem to add values to the Dictionary:

Dim Sessions As New List(Of Session)
Dim dict As New Dictionary(Of Integer, List(Of Sessions))

then some code to fill up a couple of Session objects in Sessions (not shown here) and then:

dict.Add(17, Sessions) ''#No problem
Sessions.Clear()
Sessions = dict(17) ''#This doesn't return anything!

The Sessions object is empty even if the code doesn't returned any error.Is my class Session to compex to be stored in a Dictionary?

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Filter A Dictionary To Return A List?

Apr 23, 2012

I know I can do this with a for loop cause that's how i'm doing it now. I was hoping for a more efficient way to accomplish the task.

I have a dictionary(Of Integer, Boolean) or Of String, Boolean. i want to get a list(of integer) or Of String from the dictionary where all the values are true(or false depending on what i need at the time)

and to generalize it or "black box" it, it could be any dictionary(of whatever, whatever) and return a list(of whatever) where the value = whatever i'm looking for at the time.

string, string where value = "Closed"

in short: i want all list of all the keys who's value = some criteria

my current code:

Public Function FindInDict(Of tx, ty)(thedict As Dictionary(Of tx, ty), criteria As ty) As List(Of tx)
Dim tmpList As New List(Of tx)

[Code].....

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Linq To Objects - (C#) Creating A Dictionary From An Existing List Without Looping?

Aug 31, 2011

I don't know if this is doable, maybe with Linq, but I have a List(Of MyType):

Public Class MyType
Property key As Char
Property description As String
End Class

And I want to create a Dictionary(Of Char, MyType) using the key field as the dictionary keys and the values in the List as the dictionary values, with something like:

New Dictionary(Of Char, MyType)(??)

Even if this is doable, internally it will loop through all the List items, I guess?

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Use Linq ToDictionary To Return A Dictionary With Multiple Values In The Dictionary Items?

Jan 25, 2010

I want to group items from a linq query under a header, so that for each header I have a list of objects that match the header title. I assumed the solution would be to use ToDictionary to convert the objects, but this allows only one object per "group" (or dictionary key). I assumed I could create the dictionary of type (String, List Of()), but I can't figure out how to write it. As an example I have written a simplified version below.

[Code]...

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Dictionary In A Dictionary - Collection Of Data To Pass Back ?

Apr 27, 2009

I have created a class with a function in it. I have a collection of data I want to pass back. I tried an arraylist first. Now I am trying to use a dictionary. My problem is that it creates the dictionary ok, but I am only get the last row of data from my

Function GetWeldAuditInfo(ByVal ResourceId
As
String,
ByVal VendorId

[CODE].........................

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Flatten A Dictionary Of Dictionaries And Sum The Values Of The Inner Dictionary With LINQ?

Apr 16, 2012

I have the following object:

countDictionary As Dictionary(of Category, Dictionary(of Date, Integer))

The Class has a Enumeration Property. For the purposes of demonstration, I'll call it MasterCategory.I have been trying to get out an object that looks like the following:

groupedCountDictionary As Dictionary(of MasterCategory, Dictionary(of Date, Integer)

The best result I could get was:

Lookup(of MasterCategory, Dictionary(of Date, Integer))

From:

countDictionary.ToLookup(Function(o) o.Key.MasterCategory, Function(o) o.Value)

Which results in a IEnumerable (Of Dictionary(of Date, Integer)) for each MasterCategory value.However, I need that IEnumerable of Dictionary flattened to one dictionary with all the integers summed (total counts) for each date. I then tried to use various selects and group bys (from numerous stackoverflow posts) to "flatten" it, but my efforts have fallen short.

Current Code

[Category Class]
- MasterCategory As Enum
- Name As String etc

[code]....

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Convert Dataset To Dictionary(of Sting , List(of Sting))?

Aug 5, 2011

Convert Dataset to Dictionary(of Sting,List(of sting)). My Dataset is like below..[code]...

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.net - Filter Custom Dictionary With LINQ ToDictionary - "Unable To Cast Object Of Type 'System.Collections.Generic.Dictionary`2"

Jul 7, 2010

I have created a Dictionary class (MyDictionary for the example). I am currently trying to pass MyDictionary into a function, filter it into a new instance of MyDictionary and pass this new instance into another method. When I am attempting to create the second instance from the filtered first instance of MyDictionary via Lambda Expressions and the ToDictionary Method, I am getting the following error:

Unable to cast object of type 'System.Collections.Generic.Dictionary`2[System.Int32,System.String]' to type 'MyDictionary'. I have simplified the example and recreated it in LINQPad and am getting the same error.

Here's the simplified version of my code:

[Code]...

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Dictionary In Particular The Dictionary.ContainsKey Method

Jan 6, 2011

I use VS2005 and I have just started working with the dictionary in particular the Dictionary.ContainsKey method. At the bottom of the page in the msdn library it says the following in the community content How to make sure that Contains functions properly.

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How To Read And Write Xml

May 7, 2012

I have a folder called movies. In this folder is a collection of different movies each in their own folder with their own xml file called movie.xml.I would like to extract lets say the localtitle and aspectratio from each movie xml and send to Excel. What code would I need to achieve this?So far I have the attached code which reads only one file and it is directly from the xml outside of a folder.

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Read MP3 - Write Wav?

Jun 13, 2009

Is there anybody out here in the VB, C# 2008 world that can direct me in the right direction? I do not want anything that has todo with c/C++or Direct Draw. When converting, there is no equal for SizeOf, and a few other things. I am using Lame 3.98.2.exe in my app along with LameShell that works fine for resampling, but , not for decoding an mp3 to wav or encoding a wav to mp3. You can find the LameShell project at [URL] . LameShell is a wrapper for the Lame.exe file. Here is the complete LameShell class file along with my app button clicks for the following,

[Code]...

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VS 02/03 Xml Read & Write?

Dec 21, 2010

I am trying to extend an application to to write the details from textboxes on a invoice form to an xml file.I have created 3 methods for my invoice class which will open the invoice xml document, write to it, and close it.The open Invoice method creates and invoice.xml file and writes a start tag named invoices.

The WriteInvoice method writes an invoice element for the invoice with attribute named customerName and three child elements named ordertotal, discounTotal and Invoice total. These values are taken from the textboxes form the form.

The CloseInvoice writes the end tag for the root element(invoices) and closes the file.

I have wriiten code for these methods but can only get the open invoice method to work.

My code for the 3 methods is shown below:

Public Sub OpenInvoices()
Dim sInvPath As String = "C:MurachBeginning VB.NETExercise startsVB.NETChapter 14InvoiceInvoices.xml"
Dim InvoiceWriter As New XmlTextWriter(sInvPath, Nothing)
InvoiceWriter.Formatting = Formatting.Indented 'Set formatting of XML file

[Code]...

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Can't Read / Write To Registry

Feb 15, 2012

I have several programs that must write to HKLM in XP and Windows 7/64 Pro.

The programs work in VB6 but not in VB.Net 2008 on target machines. It does works on our development machine.
Same exact windows. [code]...

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How To Communicate With USB (Read / Write)

Mar 15, 2010

How to communicate with a USB port using VB.NET?

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How To Read & Write CSV Files Using WPF

Sep 21, 2009

i'm using sharpdevelop to program WPF application(I'm newbie to WPF i've knowledge of VB only and no C#, is it necessary to learn C# to know WPF ?).

and i want to read CSV file first. after that i want to modify and save file. any suggestions and pointers for this ?

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How To Read And Write To Registry Using .NET?

Nov 15, 2009

How do I read, write and delete a registry using VB 2005/2008?

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Making A .net App To Read / Write SQL Db?

Jul 30, 2009

recommend some tutorials that show very simple examples on how one can read / rwite to an SQL db?

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Read / Write To File

Feb 27, 2010

i'm trying to read from a file and copy the text into a 2d array withought the selected item from a list box then rewrite the file from the array into the text file. however it writes a single part of the array times the variable count when i write back to the csv file. within the array everything is correct its only when i rewrite to the file is when the problems occur.

[Code]....

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Read / Write XML Files?

Nov 9, 2010

I have the following code for reading XML files.[code]...

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Read And Write Files?

Jan 27, 2010

reading and writing files. Let's say I have a text file with multiple lines that I want to be read into my visual basic program. The first line is displayed in textboxA while the rest of the lines are displayed in textboxB. How do I accomplish this? Am I able to use the peek method for textboxB but somehow tell it to skip the first line? Now textboxB is obviously a multiline textbox and I want the user to be able to type something into another textbox (textboxC), press a button, and it will be displayed in textboxA. How do I make the text in textboxC get displayed on the first line of textboxA and move all the other lines down the list?

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Read And Write From The Textfile To .net?

May 5, 2009

Imports System.ComponentModel
Imports System.Drawing
Imports System.Windows.Forms
Imports System.IO

[code]....

I want read the content of the text file and write to vb.net application. My text file name is wires.txt. The above code only read and the file appear on the application. I dont want the file to be visible to the end user.

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Read And Write In INI File?

Dec 29, 2010

i am using VB2008 to develop a Settings program for my game Lined World, creating with Game Maker. I've created a settings.ini:

[screen]
fullscreen=(off or on)
resolution=(800x600 or 1024x768)

[code]....

answers are depending on settings

now, i wanna create in the settings app the following:
"fullscreen" (radiobutton-on & radiobutton-off)

[code]....

if radiobutton fullscreen is on, [screen]fullscreen must be on, and if turned to off, the INI value should be "off".

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Read And Write JPG Tags Using VB6?

Mar 22, 2009

How can I read and write JPG tags using VB6. The ones that I want to read& write are

Title
Subject
Keywords &
Comments.

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