Fill Dictionary(Of TKey, TValue) Directly In Program?
Jul 21, 2010Is there any way to do the same in VB.NET?[code]...
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Retrieving The Index Of A Key In A Dictionary(Of Tkey - TValue)
Jun 15, 2011Is it possible to retrieve the index number of an item/key in a Dictionary(Of TKey, TValue) object?
View 13 RepliesLinq Query On Dictionary<TKey, TValue> Working As DataSource?
Dec 21, 2010I have the following in VB:
Dim sources = From source In importSources Select New With _
{.Type = source.Key, .Source = source.Value.Name}
dgridSourceFiles.DataSource = sources
[code]....
Implement IDictionary(Of TKey, TValue) In VB?
Mar 2, 2010I want to create an implementation of the IDictionary(Of TKey, TValue) interface to provide some wrapper functionality.
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The error is Interface 'System.Collections.Generic.ICollection(Of T) is not implemented by this class. I am not sure what to do about this error. I don't even really understand it. I trade to change the (Of T) to (Of TValue) but that didn't help.
SortedList Vs. SortedList(of TKey, TValue)
Jul 9, 20091) SortedLIst has a GetKey property: you ask for the nth key in the sorted list of keys and you get it. SortedList(of TKey, TValue) does not have this kind of feature. Why not?
2) SortedList stores values as "object." Is this a less memory-effective method to store values of Double than SortedList(of TKey, TValue)?
How To Overload Dictionary.Item(TKey)
Feb 9, 2011I created my own Dictionary class, based on the .NET Dictionary. Now I want to overload then Item() Method. This works fine with the following code: Public Overloads Property Item(ByVal key As TKey) As TValue
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C# - 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?
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 RepliesVS 2010 : Fill A "gap" After Removing A KVP In A Sequential String Key Based Dictionary?
Jan 2, 2012I need to remove an instance in a class for which I also created a dictionary with a string key type. Like this...:
vb
'Declare dictionary
Public PersonsList As New Dictionary(Of String, Person)
'At the bottom of frmMain.vb
[code]....
As you see, I end having 120 instances of the class Person, each assigned with a string key consisting in "student1" to "student120".
At other parts of the program I repeatedly refer to PersonsList("student" & n) to set values at those class entries, mainly with a For n ... Next block.
Now... I need a routine to remove one of those instances for good, including its entry at the dictionary, so my first bet is this...:
vb
Public Sub ExpellStudent(ByVal student_index As Integer)
PersonsList.Remove("student" & selected_student_index)
students_count -= 1
End Sub
I assume this is good enough to remove the KVP at the dictionary AND the class instance proper... right?Well, even if that is ok, I foresee one problem... Let's say I removed "student46". Next time I run a For n = 1 to students_count I would bet that I'll receive an exception due to having a gap at "student46" KVP... and that without saying that students_count will be 119, so it will never reach "student120".In short, I need a way to reassign the KVP of the now 119 Person entries, so they're consecutive again (I don't care about them changing their string key values), so I still could use my For n = 1 to students_count ... Next blocks without problems... but I cannot figure out how.
VS 2008 Cannot Run This Program Directly?
Feb 10, 2010Instead of having 1 exe file running..everything. I'd like to split it up, and allow to have multiple things running.Now, to help fight piracy, etc. In this main program, will verify an account, etc. Then if they have the program installed, cool. Allow them to run it
View 2 RepliesCRD Files - Importing Directly Into Program?
Dec 17, 2010We use a program, called CFPS (a flight planning program) and it creates different flights. I can export this file to a CRD-type. When I open it in Wordpad or something, it looks very familiar to a XML-file ("<item></item>...")...but I don't find a way to read it. What is the best way to handle this problem? It would be time saving if I can import these files directly in my program.
View 1 RepliesCreatc Tifs Directly From Program?
Mar 14, 2010The current applications uses .net printdocument to create print jobs which it sends to a standard printer. We use the blackice tif print driver to capture the output and manage it from there. The problem is that some print jobs take 30 seconds to come out of the queue, and blackice will not allow you to change settings on the driver (like output filename) until the job is complete. This means the application has to wait 30 seconds until it can print the next job. Is there a better way? Can I create/print tif images directly from .Net without a 3rd party print driver?
View 2 RepliesRunning Program Directly From CD Drives
Mar 10, 2010I am writing a program and want to run the program from the cd drive rather than installing it. What I want to know is how can I work out someones cd drive path, and code it to the rest of the file location so that I wont get errors. Also where would I put this code. So my hard drive path is
C:Moonshine
Obviously users drive letters change, hence my problem.
Convert This C# Dictionary To Program?
Dec 30, 2009Converting c# to vb. conversion tool is not doing a good job. [code]...
View 4 RepliesConvert XML To Program Dictionary?
May 29, 2012I'm trying to put sub-child values from XML into a dictionary collection using LINQ. I've done this with lists and custom collections which follow the same structure as the XML but am unable to search for specific values. If I know parentName, childName, and subChildName I want to be able to find subChildProperty1.value and subChildProperty2.value without iterating through the entire collection and each of the subsequent sub-collections, as I have to do with lists. This may not be the best implementation, and am open to suggestions, but still would like to figure out how to make this work.[code]...
View 1 RepliesIDE :: Publish Directly To Server Would It Disrupt Running Program?
Jun 19, 2009I have a running program which is installed in the server side and this program is running 24hrs a day. Now I made some enhncements on this program and would like to publish it. I tried to publish first in my local disk but after publishing Im having some errors "Critical error: Required processing file is missing" after clicking the setup.exe file. Now Im thinking of publishing this directly to my server. If I publish it directly to my server would it disrupt the running program? is it safe to do that? or is there something that I need to do it first?
View 6 RepliesProgram Directly Into Crystal Reports Or Need Visual Studio?
Aug 4, 2011Can i use vb or c# in crystal reports? Or do I need visual studio + plugin? It seems crystal reports only has a math function window.
View 2 RepliesConvert DataSet Into Dictionary In Program?
Aug 5, 2011My WCF service function return type is Dictionary(Of String,String). So I have to convert my Dataset to Dictionary.[code]...
View 5 RepliesImport All Files With Same Extension Directly In Listbox As Program Loads?
Feb 20, 2012How do import all files whit the same extension (whit extension i mean all for example .exe files or .avi files) directly in an listbox as the program loads. [code]...
View 4 RepliesStart Learning/using Modules Instead Of Integrating The Code Directly Into The Program?
Jun 22, 2010I want to start learning/using modules instead of integrating the code directly into the program. So, I tried to make an example. Basically, what I wanted the program to do, is I click button1 and it lists details about my computer. So, I added 7 labels to the form, and a button. Then, I added a module (Module1.vb)
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Use Linq ToDictionary To Return A Dictionary With Multiple Values In The Dictionary Items?
Jan 25, 2010I 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]...
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].........................
Flatten A Dictionary Of Dictionaries And Sum The Values Of The Inner Dictionary With LINQ?
Apr 16, 2012I 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]....
Using Full English Dictionary Text File In Program?
Sep 30, 2011In my debug folder I got this "Full English Dictionary" .txt file which I use in my program. But I don't want to send the whole folder, I just want to send the .exe file.. So is there a way to somehow "add" the dictionary file to the .exe file? Like get it inside it or something?
View 9 RepliesHow To Declare And Use TKey That Is Pair Of Integer
Apr 28, 2010VB2008. I would like to use a Dictionary(Of TKey, Tvalue) where the key is a pair of Integer (and TValue is String, no problem). How can I declare it ? How can I add an item ? How can I retrieve a value, knowing the key ? I can do it when the key is an Integer, but with a pair of Integer I am lost.
View 2 Replies.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]...
Request For Peer-Review KeyedBindingList (Of TKey / T) Generic Collection Concept
Aug 18, 2011There are a lot of different generic collections available, so the wisdom in creating a new one may be questionable right from the start.However, I often find myself wanting the same features from my custom generic lists, but cannot quite find all of those features in an existing object; namely, I would like to have a generic collection which works like a List or Dictionary (much like the System.Collections. ObjectModel. Keyed Collection(Of TKey, TValue)), but also works like a BindingSource does when it is bound to an ADO object (that is, it supports full sorting and filtering as well as currency).A feature I almost never need however, is transactional adds (the BindingSource's ability to 'cancel add-new').Again, with so many existing collections out there, I should take a moment to go over the reasons why none of them quite meet my needs.There is the System. ComponentModel. BindingList(Of T) which would provide some of the functionality of a BindingSource, but has strict requirements about the type {T} implementing IComparable in order to support sorting, and does not provide filtering (it is not an IBindingListView).It also only maintains a base item list by index, so does not provide keyed access.We could use simple databinding with a custom list inheriting from System.Collections. ObjectModel. Keyed Collection(Of TKey, TValue) bound to a BindingSource, but again TValue would have to implement IComparable to support sorting and we would still not have filter support.So to get all the features I was after, I decided that the best thing would be to create a new generic collection object which implemented IList, IDictionary, IBindingList, and IBindingListView (along with a few others) and would be capable of serving as a simple list, or as a binding source while providing full sorting and filtering over any newable object type.
To that end, I've created the KeyedObjectModel which contains the KeyedBindingList(Of TKey, T) generic collection/binding source. This collection can be used as a typical list, or as a binding source (you do not need an additional BindingSource component between the collection and UI controls, although you could certainly have one).Various constructors are provided in order to initialize an instance of the collection as either an enhanced list-dictionary, or as a complete BindingSource.Any object that has a public constructor which takes no arguments can be used at type {T}, providing that the object has a property of type {TKey} which will contain unique values for each entity in a given collection.If the object implements System.ComponentModel.NotifyPropertyChanged then the collection will also bubble up property changes on the current item to the collection's CurrentItemChanged event.An implementation of IComparable on type {T} is irrelevant because sorting and filtering are performed on the property values of {T} based on the type of the specified property.The current design of KeyedBindingList(Of TKey, T) is in an 'alpha' stage.The class is mostly complete from a feature implementation standpoint, however, the code has not yet been optimized and the base collections of values, keys, and view are being maintianed in generic lists of their own, rather than raw arrays.However, even without performance tuning, the collection appears to be performing quite well, up to a few thousand entries, given the amount of flexibility and funcitonality it provides.At this stage, I would really love to get some peers to try using the compiled DLL and beat up the collection a bit.Once the code has been proven and optimized, I will publish it as an example.It is a fairly complex class though (currently made up of eleven or so partial classes) so I don't really want to post the code until it has been optimized. [code]
Dictionary In Particular The Dictionary.ContainsKey Method
Jan 6, 2011I 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.
View 3 RepliesFill Out Form In Webbrowser Program?
Mar 30, 2012I am trying to fill out a form using data from form fields in my application. I believe the form is in Java script.[code]...
View 7 RepliesMake A Program That Read The File Information Directly From A Specified File?
Oct 10, 2011I am making trying to make a program that can read the file information directly from a specified file, but I am having a lot of difficulty reading things like file comments.An example of this can be found in windows XP when you alternate / right click on any file and click on properties. You'll get a lot of extra information.Now I have a few questions about this.
1.Can this information even be read in VB.NET
2.If so how
3.If not do I need to create some kind of data file to store the file information
Here is what I did so far
[Code]...