But Id like to store more information with a specific key, not just a single value, so id like to associate other values with key1 eg firstname,surname,address.
So by knowing the value of 'key1' I could retrieve the firstname, surname or address associated with it.
I know in PERL, hash arrays work in this manner
eg
$hash{'key1}{'firstname'} = 'john';
$hash{'key1}{'surname'} = 'smith';
etc....
I have developed a vb.net dll (.net 3.5) which does the following : - I have data of several stock market companies. - They are stored in several folders under a main folder. - These files are random access files. - There can be around 4000 files in total for example.
I wrote a program which reads a current csv file and stores contents in array. Then I store name and path of companies in folders (which I was talking about). Then I match one company from csv (stored in array) to companies in user's folder (again reading from array). If found I insert data in the file (random access file). This whole process takes for eg. 2 min my system. A similar program was written years ago by someone in powerbasic which takes slight less time if run one but if run for multiple csv files it takes only a few seconds doing the same thing for other files. When I do the same thing (by writing code to .net dll) and making a dummy app to run it, no matter how many times I run it takes same time. And is way slower than the earlier one (PB) one I was talking about. But if I paste the same code in my win (.net) app and not use .net dll then it runs a bit faster.
I need to show status so if I pass my form's label reference to .net dll and it updates it does that slow down process a lot. As I mentioned I am trying to process the files and it takes longer in .net. What should I do to get best performance? Unfortunately due to unexplainable reasons I cannot change the format or use a db. The files which I am reading/writing (random access files) are use by other products so I have to stick to that format. What I am doing is storing the location of those files in array so that I don't have to search folder again. that is not taking time. But opening reading and writing files is time consuming if I am doing it for few thousand of them. A similar program in powerbasic (developed years ago) runs fast. Running code thru .net dll is slower than running it thru program. Why?
I am unable to read from the text file in VB. I want to read the contents for text file and store them in array. See my code below and the text file. How should I read this text file.
'Purpose : This program will read student name & final marks for a set of students from the text file and then calculate & display class average, class standard deviation, number of students above class average, name of student with highest mark, number of students with A's(90-100), B's (80 < 90), C's (65 < 80), D's (50 - < 65) and F's (<50).Calculate for standard deviation of a set of numbers:Step1. :Find the average Step2. : Square the difference between each number and the average
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"))
I 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.
Is it possible to store Excel sheet and it's corresponding rows into a Dictionary and then later retrieve the rows into a DataGridView depending on the selected Sheet name from a combo?
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?
I have been making an rpg that i have been programing to be event driven, so the last step at this point is the items... i tryed using dictionary to store all the items but this kinda failed(Im not shure if dictionary is good idea for something like this any way). well i know how to hard code the items but i dont want to do this(Event Drivien is better). So any ideas on how i could store the items?
I am working on my real time project where the configuration details will be given on runtime. Based on the configuration details, the next form will be loaded and the data will be exported to the database and spreadsheets from the pop3 server. I have done the extraction work from pop3 server. Now i want to store the configuration details that are provided in the controls present in the form. I am new to visual basic 2005 and it has the .Net 2.0 Framework. I do want to create the text file as notepad and and i want to save it runtime with the details. I am in hope that you people will me.
I have one Field in MYSQL DB. Name is ' Field1 '. I can store the Richtextbox text(it contains Bold, Italic, Etc). using the code ' Richtextbox1.rtf 'But when i am trying to display using 'Richtextbox1.rtf=dt.rows(0).item(0).tostring ',It shows 'File Format is not Valid '.
I am writing a text editor application which uses an advanced third party text editor. This editor allows the user to set Bookmarks and use Outlining, just like the editor in Visual Studio. The output of my application is a ".script" file, which is basically just a text file. This file is read later by a game, and I can therefore not change anything to the layout of the file. It must be a simple text file.
When the user saves any document, I would like my application to also store the Bookmarks in that document, and the state of any Outlining ranges (collapsed or expanded). The editor allows me to do this by using a special Save feature, which saves the contents of the editor (the text), along with its properties, bookmarks, outline ranges, etc to an XML file. I can also load this XML file back. Now there is one obvious problem: my application should still output its documents as ".script" files, which are just normal text files as said above. Therefore, I cannot use the XML files that also hold the properties/bookmarks etc directly, since the game cannot read those!
i have my program and it does what i need it to do but when i export the contents of the text file it does not show the new line characters. it displays it in the text file like this all on one line
i have 6 text boxes on a form the contents of which changes depending on a list box, i also have a button which will be used to create a log file, my question is how do i write the contents of the 6 textboxes to a new text file, and on separate lines in the txt file when the log button is pressed.
EDIT: preferably also needs to use the save file dialog so user can choose file name and location to save to.
1)How can I make my program get the contents of a .txt file on my website to tell the program to run or not?Here is and example of what I want:Say the file says "Running", the program would run without problems.If the file was to say "Unavailable", a pop up would appear saying "The program is currently unavailable, try again later." Then once the person clicked OK, the program would close.
2)How can I make the program get contents from a .txt file to get the latest version of the program, then if there is a newer version, there would be a pop up saying there is a newer version and they need to update. Then when they clicked OK, the program would close and it would open their default web browser or Internet Explorer to the update page.
I need my program to 'take a peek' into a ZIP file and see if it contains a certain file. I need it to do this many times for a large number of files, so I would prefer it without having to unzip the entire zip-file each time, as that would take far too much time (it's a fairly large zip-file of about 250 MB).Also, I don't need the actual file at all. All I need to know is if it exists inside the zip file.
vb.net If IO.File.Exists("C:FolderIPFile.zipfolder_in_zipfile.jpg") Then ' "file.jpg" exists inside zip-file!
i have created one access file but i got error in the code so i can't store the values in that data file please check my code what's wrong with my code. [code]
I have an integer and a button.After clicking on the button, the integer value would be for example 10.Then how could I store that value 10 into the memory, and when I click the button again, the new integer value now is 5. I'd like to add up the old and new value together and write it to a text file.
I am trying to move from the old ADO to the new ADO .NET . However , no matter how many tutorials I read over the internet , I still can't find a way to do something which , as I believe , has to be very simple I tried to mimic the way the graphic control did but I am missing some things ... I noticed that , in the graphic way , the wizard created 4 controls :- a DataGridView control- a DataSet control- a BindingSource control- a TableAdapter controlI recreated all of them and filled their correspondent properties , but yet I can't make it work . I think what I am missing is the connection itself . I looked on the internet and I think a connection can be made and opened like this :
Dim DataBaseConnectionMY As New OleDb.OleDbConnection DataBaseConnectionMY.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = C:ProsoData.mdb"
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.
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
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)
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
I am coding a program that will allow the user to input 5 payrolls for Store 1, Store 2, and Store 3. The total of the 5 payrolls are then added together and shown in the respective Store's labels. A total label is also there to add up all the totals into one number. The numbers in the label must be in currency form. My problem is the numbers don't add correctly when I hit calculate. The first two numbers add together, but then after that the number just seems to subtract a random amount.
So far I have this --
Public Class Form1
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Me.Close() End Sub
I have this Quiz software that lets you create online multiple choice quizzes which are great for studying (I am in grad school and I'm trying to use everything I can to learn). So the Quiz software is great but it only lets you input questions by hand, one by one. I took a look at the .xml file that the quiz program spits out and came up with the idea to try and make a converter so that I can import many questions at once. I was hoping to try and solve this limitation by doing the following:
Take a .doc that say a tutor gives us with a bunch of practice questions, and then take that into Crimson Editor, and then format it so the question is on line 1, the multiple choice answers are on lines 3,4,5, and 6, (for the next question, the question would be on line 11, and the answers on lines 13, 14, 15, and 16, and so on) and then take that saved .txt file into my program, hit the generate button, and it will spit out the .xml file, and then import that into the quiz software to generate the online quiz.
Here is an attached screenshot of my program layout so far:
I figured out how to open a text file by watching simple youtube tutorials, but I don't know how to have it generate the stuff and have it show up in the bottom text box. I know how to do the coding to convert the txt to proper xml code but I don't know how to be able to save the contents of the bottom text window to an xml file.
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.
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.
I want to Serialize and Deserialize a configuration class containing a Dictionary to a XML file.Here is an exemple of what the class look like.
Imports Public Class
[code]....
When I try to serialize it with a XmlSerializer I get an exception saying to me that it is impossible to serialise Configuration.Parametres because it implements IDictionary.
