VS 2008 Linq - The EvensQuery And Num Are Not Defined?
Apr 18, 2010
In this following
[code]...
in the query creation part,the evensQuery and num are not defined.....then how does it work Secondly,i read this from MSDN:In Visual Studio you can write LINQ queries in Visual Basic or C# with SQL Server databases, XML documents, ADO.NET Datasets, and any collection of objects that supports IEnumerable or the generic IEnumerable<(Of <(T>)>) interface Now how can i know whether the collection of objects supports IEnumerable<(Of <(T>)>) interface or not?
On the SQL server I create a UDF. Let's name it fnCompanyDetails. It selects some information about a company from several joint tables.I then drag-and-drop this function in the new .dbml of my VB project. I want to use it with LINQ. Smth like this:
I am trying to redirect command line output to a list box in a vba macro, and I've found some code that I think might point me in the right direction, but I keep on getting the same error. When I use this code [code]It gives me the error in the title and highlights the first declaration line.What does it take to define a new "process".
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:
[CODE]....................
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.
I have a list of files I need to add to a Treeview in the correct 'format' (each directory one main node, carrying a child node for every file in that directory, and a child node for every directory in that directory). So for example, if my list of files is this:
I opened this topic in C# category too but I've encountered that C# is a bit too difficult for me so I left for a while.
This picture above is only a model. The codes written in to textboxes are just written by hand.What I want is when I put something in the textbox (1)
Like this » if(blabla == 6) return true; do
[code]....
(This is just an example code, not that it works =D)What this should do is actually search for do, while, if, return, true and put [color=blue] before it and after it [/color] and leave the rest just alone.
i am developing a windows application using vb.net and sql server. I have a windows form in which there is datagridview that calculates the 3 rates for a product E.g Pogo Lunch Box its cost price is 10 Rs. now we need to calculate 3 types of rate
rate 1 is 5% added to cost price = 10.50 rate 2 is 7% added to cost price= 10.70 rate 3 is 10% added to cost price.= 11
everything is fine till now, I am very able to do this... Now my problem sometimes the user may change the rates whatever he wants as eg. in this case rate1 maybe 10.80
I have no experience with VS 2008 Express yet. But, I need to use it to make a small VB app for work that connects to an Access database and gets table values.I have no samples to work from. I keep getting the error: Type 'ADODB.Connection' is not defined. How do I create the reference to ActiveX Data Object?
I have a User defined table type(UDTT) in Sql 2008 I am writing VB Code to send data to Stored procedure that uses it as a parameter I have found that the datatable i build in VB has have columns in same order as udtt when passing it to SQl from VB Currently I have this roughly
In SQL Server Create type table my_table Field1 varchar(10) Field2 varchar(10)
with this code dont know wht its not working source = wc.DownloadString(String.Format("http://" & cboHSearch & "/cse?cx=013269018370076798483:gg7jrrhpsy4&cof=FORID:1&q=" + cboEngine.Text + "&sa=Search", Me.cboEngine.Text.Replace(" "c, "+"c), resultCounter))
I am getting Errors: Operator '<' is not defined for types 'System.Windows.Forms.Button' and 'Integer'.
Operator '>' is not defined for types 'System.Windows.Forms.Button' and 'Integer'. Value of type 'Integer' cannot be converted to 'System.Windows.Forms.Button'.
And my program does not work!
Below is my code..............
Private Sub ProgressBar1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ProgressBar1.Click ProgressBar1.Value = TextBox1.Text End Sub
Just upgraded a VS 2005 ASP.NET 2.0 website to VS 2008 ASP.NET 3.5. There was an error on the Sub Button_Click. It seemed to be a minor error, the website and the button worked just fine, as usual. What does the error mean?
Protected Sub btnDEreports_Click(ByVal sender As
[code]...
Error 20 Handles clause requires a WithEvents variable defined in the containing type or one of its base types.
However, I now have the problem when I loop the code string I get the following error: "Parameter '?PassVar' has already been defined.". I never had this problem before I upgraded.
i am trying to read an existing excel 2007 file from vb.net i used a form with single button and i written code in button click event code is :[code...]
if there is a Linq way of doing a TOP to only select part of a datatable? Unfortunately the data won't have it's key yet at the point that I need to do this (in fact, it's the key that we are trying to get back to in the end) so I can't use a where clause that looks at the key and gets the items between a range. Looking for something that's is the equivelent to SELECT TOP 1000 a,b,c FROM ABC ... but in Linq.We're using Linq to XML to transform a datatable to xml, then send it on over to SQL Server for processing. That works fine and dandy - and amazingly fast.
How ever, I've run into a problem where my datatable has an unusually high amount of records (for the type of data that it is). I need to move data on the order of 60k records to the database at some point. currently we're looping through the DT and calling the sproc.... if I did the numbers right, that will take somewhere around 33 hours... easily not an option. Ok, so our best option is to transform the DT into an xml document and send it off, then deal with the data in set transactions. Problem is that I just can't see us sending 60k rows worth of data all in one shot like that....
I am loading al lot of data from a server to a local PC. Then i crate a disconnected table localy and move data from the server to the local PC.Then to update the userinterface (Wondows forms datagridview) i think i will use Linq ti move from this local tabel to the datagridview. On server there is 1000 000 rows in first tabel(source), to the user i have 30 000 rows each time the user loads forms and greate a smaler local table.That is once a day. But each time the user move to next row in datatabel there is 12 rows from my local table who is printed into the a new datagriview.How do i connect Linc to my ado table ?
This is an extension of my last question which was answered, so I am starting a new thread. I have a query in LINQ that I was given to trim down the columns of a datatable. This works well, however, I need to make the LINQ query dynamic. So the query below:
Dim qColumnsIWant = From row As DataRow In inDT.AsEnumerable() _ Select _ EPN = row.Field(Of Integer)("EPNID"), _ EPNID = row.Field(Of String)("EPNNumber"), _ Ingot = row.Field(Of String)("Ingot"), _ ShopOrder = row.Field(Of String)("ShopOrder")
