For a class project I am supposed to search through the attached file, and write to a new file the years between 1789 and 2009 that are not present in the fifth field. What is my best bet for determining what years are not present?
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Should I make an array of integer between 1789 and 2009, then search for every year in the file, then set a flag to false if not found; is there a simpler way to accomplish this using LINQ?
I'm getting System.NullReferenceException error when I try to add the employee info to the Employees list.
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I am learning Linq, so bear with me. I have a class object that holds 4 other class objects with each holding a List(Of T) of the next. Think tiered classes. As these lists as built I need to search all the Group2 for all Group3 to see which Group3.units.count is the largest. "units" being a List(Of T). [code]
View 4 RepliesI have a specialized string dictionary of (string, string) (_RulesAndTheirDescriptions) that contains the name (key) and description (value) of methods in a given class. I currently do the following query to search for a match on the key or value and then bind that to a grid.
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I am having so trouble with the ToUpper() procedure with strings. I am using LINQ to find unique values in a list of objects. In that whole process I set the values to compare to all lowercase in order to get a proper list. My goal is to populate a dropdown list with the values. I'm attempting to set the first letter of of the string to uppercase and keep the rest lowercase however the toUpper() procedure is not working?
Private Function FixCase(ByVal strIn) As String
Dim strOutput As String
Dim intStringLength As Integer = strIn.Length - 1
strOutput = strIn.Substring(0, 1)
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So I have a program that is supposed to support a small business. I have the work completed and the professor said it was correct but I wanted to go do a little extra.Basically, on the Order screen, you begin to type the name of a customer/supplier/employee into a text box and a list of names that fit the criteria pops up in a list box (lbMatchingAccounts). When you select it, you can hit enter new order and be transported to the Order Details screen to enter the new order.
What I wanted to do was to create a new list box (lbOrderId). What I want is to be able to select a person from lbMatchingAccounts and have all their Orders populate in lbOrderId.
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Here's what I tried, but I get an error at run time on the AddRange line that states "Only parameterless constructors and initializers are supported in LINQ to Entities."
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I have a list of objects, each object has a score attribute,The list of scores needs to be combined on the player ID to become a totaled score or series. My current thought process is to For Each through the list of individual games, and add the score attribute to a new list of scores with the same objects. So one list would be like:
clsGame(ID Number, Sore)
dim ScoreList as list(of clsGames)
ScoreList.Add(New clsGame(11, 244)
ScoreList.Add(New clsGame(11, 333)
ScoreList.Add(New clsGame(11, 444)
Then go through combining on like ID's to make a new list of games, that would actually be the series.
Dim SeriesList as new list(of clsClasses)
For each game as clsGame in ScoreList
'cycle through the list of series seeing if an ID matches, if so add the score onto that ID
Else
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Now I don't know how to add the player if its not in the seiries list without doing a heck of a lot more for each statements. If I add it after the end if then it will be added even if it is in the list..I tried playing around with List.Contains method, but I could only see if it contaned the exact same values i.e
SeiresList.Contains(game)
and because the scores are different (series vs single game) it wouldn't match, and I don't know how to see if it contains an object with just one of the attributes the same...
I am trying to do is fill out a form with certain info, put the info into an array, and write it to a listbox using loops, arrays, and maybe a function if I need one. This is for VB2010 and here is what I have so far... I think there are ways to make it shorter but I cannot figure it out.... maybe just brain dead from all the coffee I have been drinking!
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I just upgraded a project from VB 2008 to VB 2010. Before, the project did not use LINQ. I have started implementing it. So, I have updated the target framework from 2.0 to 3.5, and added a reference to System.Core, and imported the namespace System.LINQ to the entire project and also imported System.Data.LINQ into the form I'm working with (because it was not available in the list for Imported Namespaces in the references tab).
It's not throwing any errors now, but my IntelliSense is not working for LINQ stuff.
For example... I write this:
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Then, if I type S. on the next line, the IntelliSense doesn't grab what it should for S (Only get Equals, GetHashCode, GetType, ReferenceEquals, and ToString, instead of the options I should get like Count, First, FirstOrDefault, etc...). If I Type S.First. then its the same thing, no IntelliSense that lists the available fields for S, just the standard options (Equals, GetHashCode, GetType, ReferenceEquals, and ToString). I should be seeing my column names in my table when I type S.FirstOrDefault.
So any ideas what is going on? When I type the code, for example, MessageBox.Show(S.FirstOrDefault.FirstName), it works perfectly. But it doesn't change the casing of the text (so it would read s.firstordefault.firstname) and no intellisense while doing it. But no errors. BTW - Everything works perfectly when creating a NEW VS 2010 application, it's just my projects upgraded from Visual Basic 2008 that have this issue.
how can i make a list,so that every time i open a program on my pc, an item is added on a listbox with the name of the program and when i double click on the item, i get it's folder opened.For example, if i open Mozila, an item with it's text : Mozila Firefox , is added to the listbox and when i double click it , the folder "C:Program FilesMozila Firefox" opens.
View 4 RepliesHow to find Network info. I know how to get IPaddresses.
Example:
Dim host As String = System.Net.Dns.GetHostName()
Dim LocalIPIPv4 As String = System.Net.Dns.GetHostAddresses(host).GetValue(2).ToString
"Your Local IP address is: " & LocalIPIPv4
Also, programmatically, how do I get the player to stop playing an audio file?I have my app that upon startup has the wmp. The program does not revolve around the wmp, it's just a nice addition for the user. The user has 2 options to "Hide" the player. 1) "Hide the Audio Player but keep Playing the Audio File" and 2) "Hide the Audio Player AND stop the currently playing Audio File". The first option is easy to code, but for the secoond option, I have not been able to figure out in code hoow to "Stop" the audio. And I could not find any examps. Thus, the reason I am asking here.
View 2 RepliesI am using a a bin serlization for saving pictureboxes. And then i copyed the code and put it into my game player so it could load them in. But i get a error: "Unable To Find Assembly 'GME Game-Maker-Extreme, version: 1.0.0.0, Culture=nutual, PublicKeyToken:Null"[code]...
View 4 RepliesI'm looking at writing a application that interfaces with TAPI via the samsung open TSP. The problem I'm having is that after a few days research I am unable to find much info regarding coding for TAPI. There also appears to be alot of contradicting information out there too...
Has anyone got any pointers, examples or sources that I can start looking through??
About 5 years ago I wrote this program in Excellusing VBA to compute commissions, income and expenses for the real estate agents in my wife's business.The company is made up of about 50 agents. Part of the program includes a combobox on a main form when a name was selected it also selected, the agent id, and the split the agent was on. It would calculate the split expense that my wife got by multiplying the split percentage from the combobox times the total commission.The main form also contained various other comboboxes, list boxes, and text boxes to gather such info as property address, selling price, titles company, transaction credit,income,Once all the info was complete my wife was asked if she wanted to save the transaction. If the answer was yes, the info was transferred to the permanate database, a commision report for the agent and my wife was printed out, and the temporary database was cleared.
View 1 Repliesy have this class
Private Class MyClass
Public Property propertyOne() as String
Public Property propertyTwo() as String
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How can I get a new distinct list from an existing list using LINQ? This is what I have so far and it is not distinct but does give me a new list.
Dim tmpQryColumn = (From a In _allAudits
Select New CheckBoxListItem
With {.Id = a.AuditColumn, .Name = a.AuditColumn}
).Distinct()
_columnList = New List(Of CheckBoxListItem)(tmpQryColumn)
I have 2 classes
Public Class Shipper
Public Property ShipperID As Long
Public Property CreateDate As DateTime
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How can I get a new distinct list from an existing list using LINQ? This is what I have so far and it is not distinct but does give me a new list.
Dim tmpQryColumn = (From a In _allAudits
Select New CheckBoxListItem
With {.Id = a.AuditColumn, .Name = a.AuditColumn}
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I have two generic lists, named ListA and ListB. Both ListA and ListB could potentially have duplicate items. What I would like to do is use LINQ to grab the items in ListB that are not in ListA, but I'm unsure how to do so.
View 8 RepliesI'm trying to create a list of days(integer) from a list of dates(date).
I tryed to do this....
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This is what I want to do as seen in C#(loop against a list and fill another list from its data using Linq)
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I am writing app in vb.net
I have two variables one with list of RoomRate and other with list of RoomTypes.
We have RoomRates and RoomTypes linked with RoomTypeInfo variable insite the RoomRate.
So how do i find the RoomTypes which donot have the RoomRates Defined.
My Sample Code:
class RoomType
property UIN as integer
property Title as string
end class
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I'm basically brand new to LINQ. I've seen some examples that allow me to strong type objects using LINQ but I don't really understand them because they're in C#, which I guess lets you do different things with LINQ(I think?). [Code] I just want to get a list of all the products from the XML doc and put them into a Generics list.
View 3 RepliesOur CRM 2011 database contains approx. 20000 contacts, and I need to loop through all of them using the SDK. Currently I'm finding the following linq query takes a very long time to execute:
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when I try to use the code
Sub getReadings()
Dim intRead As Integer
Dim dateRead As Date
intRead = CInt(txtReading.Text)
dateRead = txtDateTime.Value comes from a date/time picker
txtTest.Text = dateRead
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lstListView is just a standard lstbox. Have no idea why this is happening or how to fix it. I can post the rest of the code if needed.
I've searched and searched for an answer to my question, but as of yet, have yet to find a solution to what I'm looking for. My background - 6 months out of College (Computer Studies)
Right now I'm working on a program that is going to be used to handle database information (Access 2007). On the main form the user can select 3 pieces of required info from drop down list boxes. Those are required. Then after that they are able to enter a first name and a second name. They then add that name to a list box below. They can add as many names as they want to a list box. Then from there they have the option to either just save the info, or if required (which will more then likely be the main option) print each person in the list their own certificate. I have designed a separate form laid out the way required for the certificate.
The trouble that I'm having at this time is that I am unable to make the printing process show all of the certs that are going to print in a print preview. I have been able to get it to only show one. The form is set to load where hidden = true.
I want to make a ToDo list with extra info, like this:
Activity1
- Place
- Start time
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I want to be able to show and hide the 'place, start time, end time, etc' with a button. I thaught it might be usefull to use Treeview for this, but how do I use Treeview? I got textboxes for activity and place and etc., datetimepicker for start and end date/time. how to use treeviewer for this?
I have a table being imported into my VB application that has 3 columns. I have written code to import the table, and have written code to display on the first column (country) in a list view.
What I want to do now is have the user select / highlight an item in the list view, and have the third column (currency) related to that selected country appear in a text box when a button is clicked.
Here's the code I've written that successfully imports the data and displays the first column:
Private Sub frmCountry_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim dataCountry As New DataTable()
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Should I perhaps use something other than a list view?