Dictionary Does Not Have A .Sort()?

Oct 19, 2011

I need to order a Dictionary in VB.net based off of the keys. The keys and values are all strings. The dictionary does not have a .Sort(). Is there a way to do this without having to write my own sorting algorithm?

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Sort A Dictionary By Value?

Dec 1, 2011

i was searching for a simple solution that i can use in sorting a dictionary by value, and i was not content with what i found, so i made up these two functions for sorting a dictionary ascending and descending. I do not assume that they are perfect, so improvements are welcomed. They are written in VB.Net and use an intermediary dictionary.

Public Function SortDictionaryAsc(ByVal dict As Dictionary(Of Long, Decimal)) As Dictionary(Of Long, Decimal)
Dim final As New Dictionary(Of Long, Decimal)

[code].....

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Sort A 2 Level Dictionary

Aug 13, 2009

I have a dictionary in VB.Net

Dim fileDetailsDictionary As New Dictionary(Of String, Dictionary(Of String, String))

In the Value of fileDetailsDictionary , I have 3 keys

key1, key2, key3

I want to sort the whole dictionary by Key3

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Have A Dictionary Or Something Of That Sort That Can Hold 3 Values To 1 Key?

May 23, 2009

is there a way i can have a dictionary or something of that sort that can hold 3 values to 1 key?

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Sort The Dictionary In DESCENDING Order Using Its Keys?

Oct 7, 2010

I have a dictionary with the keys being integer and the values being string. I was wondering how can I sort the dictionary in DESCENDING order using its keys.

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Store Objects With Key In Some Sort Of Collection/Dictionary?

Jun 10, 2012

I 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?

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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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.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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Make The Items In The TreeView To Sort Faster Or Something Totally Different To Sort Them Easier?

Dec 15, 2010

How can I improve this bit below to make the items in the TreeView to sort faster or something totally different to sort them easier?

[Code]...

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.net - Use List.Sort And Comparision(of T) To Sort Descending/Ascending?

Jul 5, 2011

I have a MyObject; myObjects as List(Of MyObject) and a delegate Comparison(Of MyObject) that uses a lot of comparison functions (ByA, ByB, ByC etc) Ã la:

Shared Function CompareMyObjectsByName(x As MyObject, y As MyObject) As Integer
Return x.Name.CompareTo(y.Name)
End Function

[Code].....

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Array.Sort(array) - Specify A Numeral Sort Based On The First Character In The String?

Jan 29, 2009

Sub Sort()
ReDim RollsCC(NumOfPlayers - 1)
For N As Integer = 0 To (NumOfPlayers - 1)[code]....

Here I am creating a temp single dimensional array, merging my 2d array into it, and then attempting to sort it by Rolls(N,1), which is a integer 1-6, Everything seems to be working right with the exception of this.

RollsCC.Sort(RollsCC, 0, 1)

How would one specify a numeral sort based on the first character in the string? im aware that I am switching Rolls(n,1) and Rolls(n,0) information during the sort.

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Sort ListView By Image.Index If Index Over 4 Sort Rest Alphabetically

Apr 12, 2012

Currently my ListView sorts items by image.index. So 0 is at the top, then 1, 2 and so on. Think of it as an IRC chat room nick list. Ops at top then the rest are sorted alphabetically

[Code]....

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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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Sort An Arraylist Using .Sort()

Jun 8, 2009

I am trying to sort an arraylist using .Sort() but am not sure what to put in the () for the field/column I want to sort on. Here is the portion of my code that creates the array from a SQL Query

[Code]...

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Using The Array Type .Sort Function To Sort An Array?

Mar 1, 2010

I am using the Array type .Sort function to sort my array.By default it places the result Array into Ascending order Least to Greatest How do I change that to Descending order Greatest to Least?and How do I change it to Closest to logic? or does that not exist?Assume there is an Array of Numbers 0,13,21,-2,4,5,1.34 and I want them to sort closest to 0 or some other arbitray value; the Output should look similar to:

0,1.34,-2,4,5,13,21

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List(Of T).Sort - Sort The List By Year

Jul 10, 2011

I have a List(Of T) storing a list of Custom classes called Advertisement. Each advertisement contains 3 properties, Year, Make and Model. I need to sort the list By Year, then by Make and then by Model. I have a property in the Advertisement class called Vehicle which returns a formatted string with the Year Make Model like 2007 Toyota Tacoma and ive been sorting on that but its not working how I thought it would. Basically I want to sort the list by Year (decending; lowest year first) then sort by the Make and Model (in alphabetical order) Is that even possible? Here is the code ive been using.

[Code]...

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How To Use Dictionary

Jun 21, 2012

I have written this function to auto correct gender to M or F from different values in a string array. It works fine but my manager told me to use Dictionary which he said is more efficient.[code]

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Any Way To Rename Dictionary Key?

Sep 27, 2011

Is it possible to change the key of a dictionary?

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Asp.net - Sorting A Dictionary By Value?

Apr 19, 2010

I have a dictionary in the form of: { "honda" : 4, "toyota": 7, "ford" : 3, "chevy": 10 }

I want to sort it by the second column aka (the value) descending.

Desired output:
"chevy", 10
"toyota", 7
"honda", 4
"ford", 3

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Change The Key Of A Dictionary?

Sep 27, 2011

Is it possible to change the key of a dictionary?

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Dictionary Keeps Updating Even When I Don't Want It To?

Mar 15, 2010

I have a dictionary of key=string and value=datatable. I use a key to retrieve a datatable and assign that datatable to a new variable. Then I make some updates to the variable. However, I find that the dictionary itself is being updated even though I'm only updating the variable. This causes significant issues when I try to reference the dictionary later. How can I set up my dictionary so that it won't update when I use a value?

dim dt1 as datatable

dt1=dictionary(key)

For row=0 to dt1.rows.count
dt1.Rows(row)(4)=dt1.rows(row)(4)/2
Next row

'at this point, when I look up dictionary(key), the value I get shows all of the original values divided by 2.

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Get All Dictionary Values?

Dec 6, 2010

It is possible to output all the dictionary values to a textbox? Not the keys, just the values of all the keys.

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How To Make A Dictionary

Sep 30, 2011

How to make a dictionary? that left side have listbox, rightside have one picturebox and textbox. When i clicked on the "APPLE" in listbox, it open APPLE'S picture and describe, when i clicked on the "ORANGE" in listbox, it open ORANGE's picture and describe.But now the problem is, i want to make it all in a exe, so that APPLE & ORANGE's picture and describe will be combine into the EXE, so what is the most easiest code to done...

- LOAD THE PIC INSIDE THE EXE (RESOURCE?)
- LOAD THE TEXT INSIDE THE EXE (RESOURCE?)
- SEARCH THE LISTBOX FOR SPECIFY ITEM

EDIT: With search function...

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Is There Already A Dictionary Control

Mar 30, 2010

[code] For example, if the word was "cat" it would return true. If the word was "jlakfh", then it word return false. To do this i need some kind of dictionary array or something. How do I do this? If it helps, I only needs words with less than 7 letters in them, and more than 2 letters in them. Also, I don't need the definitions of the words. I only need the words themselves in the arary. Do I need to manually input all the words into an array or is there already a dictionary control or something that I could use?

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Keep The CollectionMain Dictionary Value?

Dec 28, 2011

I've got a nested dict like:

Public collectionMain As New Dictionary(Of String, Dictionary(Of String, String))

When inserting a new item:

collectionMain.Add(node.SelectSingleNode("key").InnerText.Trim, collectionSub)
collectionSub.Clear()

On the add my collectionSub is filled with key & values. But when calling clear, the collectionMain.value is empty.

How can i keep the collectionMain dictionary value?

The collectionSub needs to be cleared, it's in a loop for filling.

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Possible To Use Bit Array As Key To Dictionary?

Nov 3, 2010

I have been trying to use a bit array as a dictionary key and even though I know each bitarray value is different the program fails with a duplicate key message when a try to add the second record to the dictionary. Is there any way I can make this work?

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Serializable Dictionary, How To Set Key Name

Jul 16, 2010

Question: I use a serializable dictionary class, found at , to serialize a dictionary.

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