Write A Dictionary (collection) Object To File (2010)?
May 4, 2012I 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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Asp.net - Use A Dictionary-like Collection As An Application Settings Object?
Jun 8, 2009I'd like to store a set of key/value pairs in the application settings of my ASP.NET web app, but I'm not finding a straightforward way to do that. For example, these two questions tell me that StringDictionary etc. won't serialize to XML and suggest that I'll have to roll my own implementation. But it seems like this should be easier to do; after all, web.config is XML and < applicationSettings> is essentially a collection of key/value pairs, so it feels like I'm missing something obvious. Given my specific case below, do I really have to roll my own serialization, or is there an easier workaround?
The web app in question is a basic contact form that sends email to different recipients based on the value of a parameter; e.g. [URL]...The goal is to be able add or remove recipients (or change their addresses) by editing the web.config file so that I don't have to recompile and can easily maintain different configurations in test and production environments. For example:
// I can use something like this for the sender address SmtpMsg.From = New MailAddress(My.Settings.EmailSender)
// And then just edit this part of web.config to use different addresses in different environments.
<setting name="EmailSender" serializeAs="String"> <value>webcontact@exampledomain.com</value>
[Code]...
Dictionary In A Dictionary - Collection Of Data To Pass Back ?
Apr 27, 2009I 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].........................
File I/O And Registry :: File Read/write From A Collection?
Nov 17, 2010I am working on a program with multiple collections related to one another for a school project. Each collection needs to have its own defined properties and have the objects written (1 per line) to a text file.
I have all of that working.
When reading the comma-separated line from the file, I want to place one of the properties of the object in a listbox (so that all the objects' names will show up in the listbox). I think I have this part figured out...
My problem is that when you click on the name in the listbox, I would like multiple text boxes to be populated with the appropriate, corresponding properties of the particular object in the collection...is there a way for this to be done?
Loop Through A Collection Object In VB 2010
Aug 30, 2010I'm trying to loop through a collection object in vb2010.The code was originally used in Vb6 The book said that I needed to code a NewEnumerator method first in order to be able to loop through my collection. I coded the following:
[code]...
It gives an error for IUnknown, staging that IUnknown is not accessible in this context because it is a 'Friend'.In the line in the function I removed the Set since it's no longer needed.The error message for this line is '_NewEnum' is not a member of 'Microsoft.VisualBasic.Collection'What are these messages and how do I fix this in VB 2010?m_colCourse is not a system collection.
.net - Filter Custom Dictionary With LINQ ToDictionary - "Unable To Cast Object Of Type 'System.Collections.Generic.Dictionary`2"
Jul 7, 2010I 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]...
Get The Byte Lenght Of A Row In A Dictionary Collection?
May 20, 2009If I want to get the length of Dictionary collection.Would this line of code be correct?
dim x as integer = Len(myDictionary)
How To Store And Retrieve Collection FROM DICTIONARY
Dec 2, 2011I am supporting one old project built on VB6.0.Can anyone please tell me how to store and retrieve collection from Dictionary.I searched over net but got nothing satisfactory.I really got strucked because of this.Please provide Any Example or Any Link,so that i can do self study.
View 1 RepliesStore Objects With Key In Some Sort Of Collection/Dictionary?
Jun 10, 2012I need to Store Objects with Key like:
Key: <Fontname & FontSize> / Object: <Font Object>
Example content:
ArialRegular8 | <Corresponding Font Object>
ImpactItalic10 | <Corresponding Font Object>
TimesRomanRegular12 | <Corresponding Font Object>
These font types come from an external library, the real type is DocumentFont, I prefer not to store just values and recreate the font object later, so I need to store the object, and i want to be able to call Contains() later without looping. like for example Dictionary (of T Key, T Value), is this the best option? Also, to be able to call Contains(), i will have to overload function Contains() using an Interface or this is already built-in in some Collections / Dictionaries when using a String as Key?
Passing A JSON Object As A Dictionary(Of String, Object) To WCF Web Service?
Sep 8, 2011I'm trying to setup a WCF web service to be consumed by JavaScript using JSON and jQuery.I've noticed that you can send JSON without a DataContract if the service method parameters match the naming structure of the JSON object:
<ServiceContract(Namespace:="http://foo.com/bar")>
<AspNetCompatibilityRequirements(RequirementsMode:=AspNetCompatibilityRequirementsMode.Allowed)>
[code]....
Write Dictionary Or String To XML?
Jan 15, 2012I 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?
Read/write From/into A List Of Dictionary?
Jan 11, 2012i 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?
View 2 RepliesWrite The Contents Of A Dictionary To A Message Box?
Jan 5, 2012I'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]...
String - Write The Contents Of A Dictionary To A Message Box?
Jan 9, 2012This code has changed and will be applied to another question
View 3 RepliesWrite The Value Of A Dictionary To A String, Where There Are Multiple Items Associated With Value
Jan 12, 2012I 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)
.net - Custom Dictionary Object?
Dec 1, 2009I want to extend the VB.NET dictionary object to not bitch about an item being already in the associative array.This is what i want to do:
[Code]...
My problem now is:How can I replace the (of object, object)line to let the dictionary be of generic/customizable type?
Create A Customized Dictionary Object?
Aug 11, 2009I'm attempting to create a customized dictionary object, because I want to add some code to the Add routine, and I can't just inherit because Add is not overridable.
So I'm creating a class that implements IDictionary. Already I am confused, because Dictionary implements a lot of interfaces, listed below:
Implements IDictionary(Of TKey, TValue), ICollection(Of KeyValuePair(Of TKey, TValue)), _
IEnumerable(Of KeyValuePair(Of TKey, TValue)), IDictionary, ICollection, _
IEnumerable, ISerializable, IDeserializationCallback
But IDictionary inherits ICollection and IEnumerable, so why implement all three (and don't they have overlapping methods)?
#2, when I implement IDictionary, the code fills in two Add methods (one for the ICollection add of a keyvaluepair, one for the Idictionary method). Apparently both these add methods are required for Idictionary, yet a regular dictionary (which implements IDictionary) only has one Add method that I can see. I actually would like to have only one Add method if possible. Why am I being asked to make two (and that's before all the other interfaces have been added)?
Fetch Values From Dictionary Object?
Mar 11, 2011I have a dictionary of type:
Dim parentDictionary As Dictionary(int,Dictionary(string,string)).
Dim childDictionary As Dictionary(string,string).
parentDictionary.Add(1,childDictionary)
Now I need to iterate over childDictionary to fetch key value pairs.My childDictionary is inside parentDictionary.
Find Only Part Of The Key Value In A Dictionary Object?
Apr 5, 2012There a dictionary object that gets loaded with the following key values:
[Code]...
In most situations, life is good and all the individual key values are needed/unique. But in certain situations, the keys with letters behind them (ie...189a, 189b, 189c) all mean the same thing (ie...189). So I need a way to see if a key value exists (like the containskey method) for only the first part of the key and then return true.
Use LINQ To Filter Collection Of Nested Classes To Yield Dictionary Of Unique Properties Of Those Classes?
Jan 23, 2012I have two classes, one nested in the other. [code]Neither "Name" or "ID" are unique between operations and records.I wish to construct a dictionary using LINQ = Dictionary(Of String, Of List(Of Integer), whereby the keys are uniqe examples of Names in my collection and the values are the collective set of distinct IDs that are associated with those names.
View 2 RepliesC# - Track Changes Of Object Contained In Dictionary And Change TKey Accordingly
Nov 17, 2010I am writing a class library to interact with a domain Active Directory. In my object model, I have the following:
Domain;
Organizational Unit;
Group;
User.
In my Domain object, I have an Entries property and an Add() method.
public class Domain {
// The ReadOnlyDictionary<TKey, TValue> is a custom wrapper over an IDictionary.
public ReadOnlyDictionary<string, IDirectoryEntry> Entries { get; }
public void Add(IDirectoryEntry entry) {
Entries.Add(entry.Name, entry);
[Code] .....
For your information, I implemented the INotifyPropertyChanged interface to ease my life, but I don't seem to find a way to make it work the way I want. Perhaps am I not doing things right somehow, as for the location of different methods, I don't know. How can I make my Domain aware of a change that occured within one of its Entries, so that the TKey value is also changed? That is wanted because one could possibly add an entry, change its name meanwhile adding a new entry with the "old" name of the actual within entry, and cause a conflict, etc. In the end, causing the test to fail. But I'd like to make it pass like it actually is. Is there another better approach or workaround?
Dictionary Object - Error - Arithmetic Operation Resulted In An Overflow
Jun 8, 2009I am having issues with a dictionary object I'm trying to use.
I have this code:
CODE:
Every time I run it, I get this error: Arithmetic operation resulted in an overflow
I am adding to the dictionary like this:
CODE:
Is there anything I am doing wrong?
Fill Object Variables Defined In Dictionary Based On JSON?
Jun 13, 2012That question sounds maybe a little confusing so I'll try to explain it with an example.[code]...
View 1 RepliesIterate Through The Keys And Values Collections Of A Dictionary Object Using An Index?
Apr 25, 2009I have a VB.NET project where I am able to iterate through the keys and values collections of a dictionary object using an index:
MyDictionary.Keys(idx)
MyDictionary.Values(idx)
When this code is taken from the test project and placed into the real project I get the following error:
'System.Collections.Generic.Dictionary(Of Double, String).KeyCollection' cannot be indexed because it has no default property.[code]...
In the line in sub search that says "dtf.Keys(idx) = 0" place your cursor after the right parenthesis and backspace you should get a tooltip that says, "<Extension> ElementAtOrDefault(index as Integer) as Double - index: the zero based element of the index to retrieve.
2010 Write INI File
Apr 15, 2012I'm trying to write data to an INI file, I've got some code to read it: url...I've tried to modify this code to get it to be able to write to INI files, but I haven't had much success.I know there are DLL's designed for this, but I would like to have my application so it can be distributed as a single EXE.Also, I know there is My.Settings, but I cannot use this, as this INI file is used by another application, that I have not developed.
So, I was wondering if anyone could help me modify this code to write to an INI file, something like WriteIniValue(IniPath, Section, Item, Value)
VS 2010 Write To A XML File?
Dec 26, 2011Can someone tell me what the best way to write to an xml file is? This is what I am doing now:
[Code]...
VS 2010 Read File And Write To New File?
Nov 5, 2010I have a problem and hope someone have idea to rsolve it. I have a file and inside the file the format is like that :
123.567 456.789 12.345 223 223 221 223
123.555 456.788 12.344 223 223 221 222
123.456 345.678 456.234 445 445 445 445
total line is 3456789903. I want use vb console application to read the line and every 130000 line create a new output file.
VS 2010 Create File And Write In It?
Oct 9, 2010I currently have:
Dim fcr As System.IO.FileStream fcr = System.IO.File.Create(Application.StartupPath + "" + sname + ".htm") it creates the file fine. how can I write inside this file though?
VS 2010 Write Data To Txt File?
Jun 20, 2010So i am trying to write 2 txt box's data to a text file in my app.Im just curious on how can i make it so it will write this file within the folder it was installed?alsohow can i then take this data and loop through it to insert it into a listbox?
View 18 RepliesVS 2010 Write More Than 1 Line To File?
May 12, 2012how to write more than one employee to this file with my code. I had a for loop in there but it just placed the second person I entered into it twice rather than the 1st then 2nd person.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'gets the file name through an input box
[Code].....