Joining A List(of T) With An ObjectQuery?
Oct 26, 2010I recently was working on joining two objects in VB.
processed_files, which is an ObjectQuery(of T)
list_of_file_ids, which is a List(of T.ID)
If I do:
[code].....
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SubQuery To A Local List Using ObjectQuery?
Apr 12, 2011I need to find all records where the status is in the local list of Integer's.
In SQL I would do
Where Status in (select i from my list)
But I can't figure how to make it happen in Linq.
ListData = New IssueTrackerEntities2()
Dim queryString As String = "SELECT VALUE CallList FROM IssueTrackerEntities2.CallList AS CallList"
Dim Status As New List(Of Integer)
[Code]....
Unable To Cast Object Of Type .objectquery To Type Generic.list
Sep 12, 2011I have a question about ASP.Net, visual basic I have 2 LINQ query's, the first one works, the second one doesnt, produces a
"Unable to cast object of type 'System.Data.Objects.ObjectQuery'1[SelmaV2.Products]' to type 'System.Collections.Generic.List'1[System.String]'.
[Code]....
Pass A Parameter From The Select List Into A Function For Joining A Linq Query?
May 25, 2010I have a query that can be summarised in SQL as follows;
Select
S.StockCode
From
StockToCheck As S
[Code]....
Where the S var is a list of strings. This gives the error 'S' is not declared and points to the S in the function call / join (GetPOSStock). So it does not seem possible to do this in Linq, can anyone confirm?
ObjectQuery Error When Using STE And WCF?
Nov 29, 2011I received this error when i implement STE in EF4 and WCF "Object mapping could not be found for Type with identity 'NorthwindModel.Customer'."if I'm not using STE (in single project), this code is working.Walkthrough: Serialize Self-Tracking EntitiesHere is my code
WCF:
Public Class Service1
Implements IService1
[code]....
Returning Events Logs Using WMI - ObjectQuery
Apr 15, 2010I am working on a Visual Basic application that is returning Event Logs using WMI. I only want the latest 5 application, error events, but as I have the code now I get everything and then need to loop through and grab the first 5.
Dim wqlEventLogAs ObjectQuery =New ObjectQuery("SELECT * FROM Win32_NTLogEvent WHERE Logfile = 'Application' AND Type='Error'")
Dim objEventLogAs ManagementObjectSearcher =New ManagementObjectSearcher(myManagementScope, wqlEventLog)
ForEach objMgmtAs ManagementObjectIn objEventLog.Get
Next
I have tried a number of ways to add "Top(5)" to the query but each time I get "Invalid Query".
.net - Working With The ObjectQuery Single Enumeration Challenge In Linq-To-Entities Entity SQL?
Dec 30, 2011I'm working on modifying this example:
Using advWorksContext As New AdventureWorksEntities
' Call the constructor that takes a command string and ObjectContext.
Dim productQuery1 As New ObjectQuery(Of Product)("Product", advWorksContext)
[code]....
An ObjectQuery can be enumberated only once. (Subsequent attempts at enumeration throw an exception.) The enumberation takes place in the for each statement. The problem is that if the query is empty attempting a For Each will throw an exception. But if I check for a count:If productQuery1.Count > 0 Then . . .
That eats up my one chance at enumeration. I could nest the For Each in a try/catch block and throw away the empty query exceptions, but that's ugly.
.net - Joining Two Bezier Curves?
Jan 24, 2012i have two bezier curves placed at a distance apart in space.curve 1 has control points A0, A1,A2, A3. A0 and A3 lie on curve and are its end points Curve 2 has control points C0,C1, C2, C3 . C0 and C3 lie on curve.and are its end points
i want to join the two curves A and C with an intermediate bezier curve B. the intermediate Curve B has control points A3 and C0 which lie on the curve and are its end points. the intermediate control points B1 and B2 are unknown to me. also the joining should be smooth enough. please help as to how to proceed. have read alot about beziers but dont know how to do this.
.NET LINQ Group Joining?
Dec 2, 2010I have a list of object with 3 properties (quantity, service, name)I want to have all names and services in my list (kinda cross join) and the grouped quantity of the row corresponding. Not clear i guess
Quantity Service Name
3 Srv2 Bob
4 Srv2 Paul
2 Srv1 Paul
1 Srv2 Nick
I want as output All the services and all the names and corresponding quantities (0 if none)
Srv1 Paul 2
Srv1 Bob 0
Srv1 Nick 0
[code]....
Here is what I got so far, but I dont even get the expected resultsAnd I am acutally certain there is a pretty easy way of achieving what i want...
Dim services = (From a In interventions Select New With {.Service = a.Service}).Distinct()
Dim months = (From b In interventions Select New With {.Month = b.DateHeureIntervention.Month}).Distinct()
'Dim query = (From s In services _
[code]....
Difference Between + And & For Joining Strings In .Net?
Apr 9, 2009difference between + and & for joining strings in .Net?
View 6 RepliesJoining Active Directory With App
Jan 9, 2009I am trying to Join the domain using VB.NET 2005. I cannot see anything I am missing but am getting an error code that hasn't proven much use. I get a return error code of 1332.[code]
View 1 RepliesJoining Data From Two Datasets?
Nov 1, 2011All I really want to do is a join. Table 1 and Table 2 both have a number that would link the two together. I want to join two fields from Table 2 onto Table 1. I need to have two datasets because there are two different connections being made.I want to push this onto a DataGridView, which only allows a single datasource. So I'm thinking I would need to make a temp table somehow, but since I'm pulling from two different datasets I don't know if that's possible.
View 1 RepliesJoining Two Bezier Curves?
Jan 16, 2009i have two bezier curves placed at a distance apart in space.curve 1 has control points A0, A1,A2, A3. A0 and A3 lie on curve and are its end pointsCurve 2 has control points C0,C1, C2, C3 . C0 and C3 lie on curve.and are its end pointsi want to join the two curves A and C with an intermediate bezier curve B. the intermediate Curve B has control points A3 and C0 which lie on the curve and are its end points.
View 7 RepliesJoining Two SQL Server Tables Together
Jul 17, 2011I am not sure if the above title is suitable for what I mean, but basically my application has a login table with entry U_ID and I have also created another field in my other table which will store this ID from the login table.
What I want to do is, if a user with say U_ID = 1 downloads data and stores it in the
second table I would also for trackable reasons be able to store the U_ID of that user
in the second table so that I would know who downloaded the information.
How can I acheive this and if there are any example then point to them.
Joining Two Tables From Two Different Databases With VB.net, Possible?
Jun 5, 2012Can you perform a join on two tables, one is an Access database and the other is a SQL Server database.I understand that I could perform a SELECT on each database, and then manually join the results. Is this how I'm going to have to do it?
View 1 RepliesJoining Two Tables In The Dataset?
Apr 11, 2011I am having a data set in vb.net with two tables one table is filled by using oracle databse and another one from Sql 2005. How can we join these two tables in the dataset?
View 2 RepliesJoining Two Datatables Or Pivoting A Datatable?
Dec 12, 2011I have a datatable that contains 8 columns. To make this more presentable I have managed to pivot three of these columns. That will not do since I then loose 5 columns of information. To overcome this problem, I thought of just joining the two tables in vb.net.This seems more difficult than expected. LINQ are hard to learn compared to SQL. I have tried to pivot the query in SQL but am not able to.Here are the query:
"SELECT t1.Journal,t2.Kunde,t2.Kundenr,t2.Lokalitet,t2.Lokalitetnr,t2.Analyse,t2.Positive,t2.Totalt " & _
[code].....
Syntax Error In Joining Query?
Apr 15, 2012Inline Code Example Here
con.Open()
cmd.Connection = con
[code].....
The above is my query for my datagrid view nd it keeps saying
Incorrect syntax near '.'.
but when i do it in the query bulider in sql server it is fine?
VS 2010 LINQ Sub-elements And Joining
Mar 30, 2012I'm really struggling with this. I have two XML files. The first one has items, and then sub elements for properties:
[Code]...
VS 2010 Split And Joining Strings?
Mar 25, 2011i have a program where im trying to split a string from 1 text box and output the values in to 2 different text boxes .
my string username: password which reside in txt1.text
i want to split the string at ":" and have username appear in txt2.text and password appear in txt3.text i have this code but doesn't work for what i want to do.
Quote:
Dim text Array() As String = txt1.text.Split(":"c)
'ALPHA SORT THE ARRAY
Array.Sort(text Array)
[code]....
Also trying to find a way to rejoin the text back to the original string afterward in the username: password format
Joining LINQ Query Results For Each Item Together?
Feb 3, 2011In my application, I have a search query textbox (txtSearch) that works well with one-word queries with the following LINQ:[code]So how would I make the above query more generic (ie: able to handle any number of words in a query)?I should note that the object being queried is a List of strings pulled from an Access database. As it stands, this application only queries the database once and I'd like to keep it that way if possible.
View 3 RepliesJoining ListBoxes - Selecting Items Automatically
Sep 12, 2009I was just wondering weather it was possible to make it so that if I press the first a item on listbox1 then the first item on listbox 2 is selected aswell. For example I would like to have 2 listboxes lst1 and lst2 and I would like it so that when I select the first item on lst 1 then the first item on lst2 is automatically selected and when I select the 3rd item on lst1 then the 3rd item on lst2 is also selected.
View 7 RepliesJoining Strings From RichTextBox / RadioButton And CheckBox
Dec 12, 2010I want the strings of RichTextBox1 and RichTextBox2 (strings are separated by newlines) printed to RichTextBox3 along with selected RadioButton's name and ticked CheckBox's name.[code]
View 2 RepliesSql - Joining Row1 With Row2 - Row3 With Row4
Feb 14, 2011I have a little issue. I need to be able to concatonate the Row1 with Row2 to another/row/table, and the start again on the 3rd row, Join Row3 on Row4 .. and so forth. The issue i have is that there is no relationship between Row1 and Row2. The only common thing is that Row2 is part of Row1. Can this be done? (Can be done with either by SQL SERVER, SSIS or ASP.NET VB) Below is a sample output of the data in column1 (single column)
[Code]...
Update Datagrid Joining Two Tables With Bindingsource?
Oct 13, 2010I am trying to update a datagrid joining two tables with a bindingsource. I keep getting the following error: "dynamic sql generation is not supported against multiple base tables." Any ideas on how to fix the problem? Also, I realize that commandbuilder does not work for more than one table.
View 4 RepliesVS 2008 Create A View By Joining Two Table?
Jan 25, 2010im using this code for create view joining tow table but its gived me error on 'INNER JOIN' :
Cmd.CommandText = "CREATE VIEW MyQry As SELECT TblData.Emp_ID,TblData.Emp_Name,TblData.Emp_Bonus,TblData.Emp_Salary,TblData.Emp_Sanction FROM TblData WHERE TblData.Emp_ID LIKE '" & LstEmp.Text & "' INNER JOIN
[Code].....
Join Lists Or Arrays Like Outer Joining Tables In SQL?
Jun 27, 2011Basically what I'm having to do is create a program that takes a list of CaseIDs and compares them to a table on a remote SQL server. However, the table holding the CaseIDs on the remote server has nearly 120,000 records.
Currently my plan is to query all records on the remote server, save the query and the current list to tables in an Access DB file and then run an outer join to see which CaseIDs have no matching records on the remote server.
I believe this will be a much slower process than I would like. If I could load both queries into arrays or lists in VB and then compare them (therefore, not having to write 120,000 records to a DB file), it would be much faster.
How An Application Like GameSpy Or GameRanger Launches Applications And Is Able To Sync With Other Users(all Joining Together)
Feb 14, 2010I have been trying to figure out how an application like GameSpy or GameRanger launches applications and is able to sync with other users(all joining together). I have been under the assumption that it was just simple command line switches being used. The more I look into it the more I don't think that is the case. I believe they are hooking into a game's API to do so. My question would be, using OllyDbg I was able to get the memory address of a Text display in the game(The game you are about to create's name).The default is "TEST SESH", and if you highlight the field and hit enter you can edit it. I was wondering if anyone could give me incite on how I could set this text through a DLL injection?
View 1 RepliesDatatables Left Join Linq - Joining 2 Datatables And Have The Joined Datatable As Result
Jun 1, 2012I'm having a hard time joining 2 datatables and have the joined datatable as result. First datatable (labels) holds data including a printerid. Second datatable (printers) holds printer references (id > unc). I would like to have as endresult (joined) a datatable with all data from the first datatable with the field (unc) of the second datatable. [Code]
View 3 RepliesLINQ: "Group Join" Functionality Joining Three Tables
Jul 21, 2010I'm working on becoming familiar with LINQ, and getting my head around the syntax and usage.
[Code]...