.net - Imports And References Required To Use LINQ
Nov 4, 2010
I have never used LINQ before, and I am getting an error in an application that does use it. This is a VB.NET (.NET 2.0) project in Visual Studio 2008.
Here is the offending code:
Dim orderedRows = From r In resultRows Order By r.FIELDNAME Select r
And here is the error (names changed to something generic, but otherwise accurate):
Expression of type '1-dimensional array of
Company.OurLibrary.FunctionalArea.Library.StoredProcStuff.USP_MYPROC.ResultRow'
is not queryable. Make sure you are not missing an assembly
reference and/or namespace import for the LINQ provider.
C:projectfilename.vb
So I recognize that I need to import LINQ libraries. This link led me to add "Imports System.Linq" to the file, but that is an unresolved reference. Based on the same link, I figured I needed to add a reference to "System.Core" to my project, but it is not listed as an available option when I try to add a reference (nor is it already checked).
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May 7, 2010
Are the following references required for VS 2008 users as well? Or only required for VB 2005 Express Edition users?
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Apr 23, 2012
Public Class Form1
Imports System.Math
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load[code].....
For some reason, when i try to start the program im getting the following errors: Error1'Imports' statements must precede any declarations.C:Vb10sbschap05My Framework MathMy Framework MathForm1.vb25My Framework Math
Error2'Sqrt' is not declared. It may be inaccessible due to its protection level.C:Vb10sbschap05My Framework MathMy Framework MathForm1.vb1018My Framework Math
Im using Visual Basic Express 2010.This is from a tutorial in Microsoft Visual Basic 2010 Step by Step
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Apr 5, 2011
I know there are similar questions on stackoverflow - and I looked through them and think my issue is somewhat similar, but haven't been able to find a solution by looking at any of these other questions/answers.I'm getting the error when attempting to execute the following code:
Private Sub btnReserve_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnReserve.Click
' Check that the room is still available.
Dim dbCheckOccupants As New pbu_housingEntities
Dim hall As String = CStr(Session("hall"))
[code]....
It is catching an error on this line:
Dim myID As String = GetID.First.id.ToString
As far as I can tell I'm not using multiple contexts?
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Oct 14, 2011
I've build a large program with many references. F.e.:
System.Data.DataSetExtensions
System.Linq.Dynamic
I've to write a Dynamic Linq Expression: [URL]
In my case: Dim query As IEnumerable = ds.Sales.Where(strWhere)
But with System.Data.DataSetExtensions Where is misinterpreted. The compiler expects (Datarow, Integer, Boolean). If I delete System.Data.DataSetExtensions everything is ok with this expression, but I get many other errors, so I need this reference. What can I do that the Where is interpreted correctly?
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Mar 9, 2011
I have Crystal Reports 2008 installed on my win7 laptop but when i go to insert references from my application settings the CrystalDecisions references are missing and im not able to find them. Note: they do exist in my "c:windowsassembly" folder.
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Aug 11, 2011
I would use the System.Linq.Dynamic. I added the specified Dynamic.vb file, that starts like this:
[Code]...
to my (VB.NET)solution. Now Visual Studio does not recognize anymore in the project files the System.XXX references, proposing me to change them to Global.System.XXX
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Feb 18, 2011
I was trying to finish up a VB.NET class library project when I tried to remove all unused references. I know for a fact that I'm not explicitly using any thing from the System.Xml and System.Xml.Linq assemblies yet the "Unused References..." button never flags them for removal.In fact I even tried "Unused References..." on a blank project and it still never flagged them.
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Apr 8, 2011
I have a class set up to hold values on a registration form (VB.NET, MVC), and among the properties is a Password property:
[Code]...
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Jan 30, 2012
I have Visual Basic 2010 Express and i have just installed MySQL, when i type Imports then i can't see the MySQL in the suggestions, what's the problem?
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May 10, 2012
I have a function when fired queries against the database (twice) and returns the results in a dataset. It checks the results (to make sure there are some) then loops through and grabs each row from the returned dataset and imports (copies) it to a different dataset.I also add a primary key into a List so I do not add the same item twice (from the 2nd query) to the dataset.I then return the dataset.The problem? The query works and there is a returned value.. however the dataset in which I aim to import the row(s) to does not keep the imported row.
Public Function GetClientsWithMonitors(ByVal argHost As FOO.Interfaces.BAR) As DataSet
Try
Dim localDataSet As New DataSet()
Dim clientsWithMonitors As New DataSet()
[code]....
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Jan 27, 2010
Using :
VB .NET 2008
Framework 3.5
Windows form app.
I'm developing a GUI for a touchscreen, so when user wants to scroll he/she uses their fingers. Now I Found the following :
[URL]
This works, but is this possible to set the value with an imports/api call in .Net
I found the function GetSystemMetrics but there isn't a SetSystemMetrics and with the SystemParametersInfo you cant change the SM_CYVSCROLL value
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Jul 18, 2011
Does vb 2010 have a 'REQUIRED" property or control that allow you to make a textbox a "required" field? I googled and saw something about required property in controls in toolbox but somehow I could not find it anywhere in my vb 2010 toolbox. Would it be easier to write it? Does anyone have sample code?
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Feb 17, 2012
I am familiar with c# way of fixing the import via Ctrl-。 but how do you do this for visual basic project?Also does visual basic does not seem to have the [Organize Using] feature for c#.
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Apr 21, 2010
I need to have a CSV get sorted alphabetically before/during/after it gets filled to a combo box. What I have is a text file with a list of company codes, and company names in the following format:
companycode,companyname the code below loads the CSV and then fills a combo box with each value. When a user selects the company name from the combo box, the corresponding company code is loaded into a text box and used to upload a file to a sepcific directory based on customer. I've looked at ways of sorting comboboxes, and presorting the CSV before loading, but is there a way to do it during the importing/datafill?
[Code]...
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Dec 24, 2009
In my Solutions in Visual Studio, I have 3 projects.
- Common (Root namespace: PodcastPlayer.Common)
-PodcastPlayer (Root namespace: PodcastPlayer) This is the Silverlight project.
-PodcastPlayer.Web (Root namespace: PodcastPlayer.Web)
In Common, I have several classes and service references.But my problem is that I can`t not use PodcastPlayer.Common namespace in PodcastPlayer project.
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Feb 2, 2010
how do you know what imports to add to the top of the page? The only way I have figured it out was to look up other people's code with the methods I am using to see what is used.
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Mar 30, 2010
I have created some code that pulls certain data from sql and saves it as a txt file (columns seperated by commas). I can't seem to find a way to import these newly created txt files into excel. I create 2 txt files, and would like to import the 1st one to sheet and the 2nd one to sheet 2. Then add a row to each sheet and fill in headers.I have the code down, and create the workbook and sheets and adding the rows and headers, but I can't seem to find a way to do an import into excel through the vb.net code.
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Aug 29, 2010
I knew from here that we have to do the explicit imports for child namespace because imports will not include the child namespace.But my question is that if I do "imports System" whether it will include all the classes/methods inside that namespace in the IL/native code or only referred ( used inside the application) will be included in the IL/native code.
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Aug 17, 2011
Do not know how to convert Me.Base to C# Imports Microsoft.VisualBasic
[Code]...
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Feb 23, 2011
a common VB.NET class should look like the following:
Public Class MyClassName
End Class
Besides, I have already seen, if I remember correctly, all of the import statements visible just like in C#:
Imports System
Imports System.Data
Imports System.Linq
Public Class MyClassName
End Class
How to make these default imports visible by default in VB.NET using Visual Studio 2008?Is there some setting or the like in the options I shall set?
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Aug 31, 2010
I need to import java.util.zip for my project to zip and unzip chosen files/folders in vb.net. But when i say imports java.util.zip, i get the error "Namespace cannot be found". I went in the add reference and checked in both .net and COM components bout found nothing for java. What dll would i need to make this work?
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Aug 3, 2011
Generally speaking, a common VB.NET class should look like the following:Public Class MyClassNameEnd Class
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Oct 5, 2010
I am trying to print a Rich Text Box in VB.Net. There is a good example at:BUT, when I copy the code I get errors onImports System.Windows.Controls
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Apr 5, 2012
I'm looking for imports method in vb8 to connect any server send and receive
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Dec 18, 2009
i need to imports some namespaces but it give me error, why??namespaces are:
Imports Outlook = Microsoft.Office.Interop.Outlook Imports Excel = Microsoft.Office.Interop.Excel i put them before the public class of a form.
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May 11, 2011
I'm developing an web application using VB.Net, and I would like to know, if is there any way to make a namespace to be viewed by all project without necessary Imports?
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May 28, 2009
Can anyone tell me if the Imports System.IO accepts all files types?? What I mean is, can I use it to access .csv, .xls or .doc files? And one other thing.Do I need to include the file location in the body of the procedure/function??
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May 9, 2012
I'm trying to add the export to word capability to my code and adding the following to my code gets me some warning and errors. I was able to find a download sample code to do this, however it's strange, when I run the downloaded code, it didn't encounter error but I put this together with my code it produced some errors.
Option Explicit On
Option Strict On
Imports System.IO
[Code]....
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Jun 17, 2011
When I use dll imports in my project and send the built .exe program to someone else,does he need to have the .dll file in his computer too?If he does, where should the .dll file be?-same folder as .exe programor- C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0
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