Right now I have a listbox, this listbox displays surnames, when clicked it displays their address. I have a 'confirm' button to confirm the right person. And now I need more information to come up when that's clicked, giving data from another table. I'm sure I need to use an inner join but I don't quite understand how to do it
View 11 RepliesHere is my Scenario
I Have First Datable :TableA
**Item** **Place**
ItemA PlaceA
[code].....
I have two tables Employees and CafeLogs. Some employees can be cashiers and also customers at the Cafe shop.
Table structures:
Employees: EmployeeId(PK) , FirstName, LastName
CafeLogs: LogId (PK), CashierId, EmployeeId, Value, => CashierId and EmployeeId are the data from column EmployeeId of Empoyee table
Table relationship:
Employees 1:N CafeLogs (CashierId (FK))
[code]....
Right now I know how to select only LogId, Employee's name, and , Value, not with Cashier name yet.
Dim query = From log In db.CafeLogs _
Join emp In db.Employees On emp.EmployeeId Equals log.EmployeeId _
Select log.LogId, emp.FirsName, emp.LastName, log.Value
How can i Join two tables in datagrid view? Presently this is the command which still cant work after i tried the sql JOIN command...
Dim cmd1 As OleDbCommand = New OleDbCommand("SELECT * FROM LECTURE_DETAIL WHERE LECT_ID = '" & cmd_lecID.Text & "'", con)
I get the error:
One or more errors occurred during processing of command. ORA-00918: column ambiguously defined
customers
phonenumbers
customers_has_phonenumbers
customers -> detailed
customers.customer_id int(11) primary auto_increment
[Code] .....
How to get the data by customers.customer_id from phonenumbers?
I'm working on an ASP.NET 4.0 site, which I inherited ownership of. It has a number of existing LINQ datasources pointing to individual tables. For example, to the Patient Encounter Summary table in SQL Server. The problem is in displaying the data there. It's a normalized database, so that table contains (for example) the provider ID, rather than the provider name.
It's simple enough to join the Patient Counter Summary to the Providers table (in SQL)... but how does one do that in ASP.NET? I'm not sure of the correct nomenclature, but the 'mid layer' is VB.
[Code]...
dsNumbers.Relations.Add("compare", _
dsNumbers.Tables("dtVDEOutputNumbers").Columns("jobno"), _
dsNumbers.Tables("dtCSRInputNumbers").Columns("vg_jobnum"))
DataGridView1.DataSource = dsNumbers.Relations("compare")
No data seems to be returned from this command, even though I know there is data present. There is one record per table:
dtVDEOutputNumber: jobno = "24383", vde_pkgs = "328"
dtCSRInputNumbers: vg_jobnum = "24383", vg_quantity = "650"
Not sure why it isn't matching and return a "Joined" record.
How do you insert/update in a datagridview which is 2 table is bound into it (inner join statement)Best Regards,Iannoob vb programmer
View 1 RepliesI have two tables, a LP_task table and an lp_Update table. I want a complete list of tasks and only updates that were posted during a specific date range. LINQ doesn't seem to support any other join criteria but 'equals'or each task. I want all tasks (left table) even if they don't have an update. (Left Outer Join)
Dim TasksData = (From t In db.LP_Tasks _
Group Join up In db.LP_Updates On t.ID Equals up.TaskID Into upds = Group _
From u In upds.DefaultIfEmpty _
[code]......
i am using ASP.NET with VB.NET to connect to a MS Access database. how can i make the sql statement to insert a new record into the existing table and join tables?
View 1 RepliesIwant to join two tables,'Employee' and 'Dispatch'. Dispatch has column 'DispatcherID' and 'TechnicianID' which are both foregn keys to EmployeeID in Employee table.I want to join these two tables using EmployeeID so that i can obtain the matching name to each id.but it only works when i make a single join to either DispatcherID or TechnicianID and not for both.
[code]
select Employee.firstname+' '+Employee,secondname as Technician,Employee.firstname+' '+Employee.secondname as Dispatcher from Dispatch inner join Employee on Dispatch.TechnicianID=Employee.EmployeeID inner join Employee on
[CODE]...
I am reading two lines of data into an array, the data being split by commas (,).[code]...
View 2 RepliesThis ought to be relatively simple... I have a Jet database that contains the table of interest, tblCategory. tblCategory has three attributes of interest for this issue: fldCategoryID, fldParentCategoryID, and fldName. There is a self-join from fldCategoryID to fldParentCategoryID (one-to-many). On my form I wish to have a combobox display all the categories available (shows the fldName attribute of tblCategory) and assign the selected value to fldParentCategoryID.
So, my form is based on a dataset that is attached to tblCategory in the normal way. That works just fine. To facilitate the combobox, I created another dataset that simply contains fldCategoryID and fldName attributes and is non-editable - imaginatively named dsLUCategory (dataset lookup Category).
[Code]...
I have a datagridview.And as per my requirement the data is supposed to be filled from three different tables in database.I have created the query and is succesfully able to populated the data in it with the cross join.Have a look at my structure.
Table1,Table2,Table3.
table1 has 2 records.
Table2 has 7 records.
and Table 3 has 15 records.
Below is my code that reads data from Cross Join Query
If dr.HasRows Then
While dr.Read
combo1.Items.Add(dr(0))
[code]....
It is giving me duplicate records.
I have three tables: BOOKS(BookID, Title, Author) CLASSES(ClassID, Title, MajorID,BookID) and MAJORS(MajorID, Description). I added these three tables to a LINQ to SQL class (UBooks.dbml) and then connected to the data sources. Then declared DataContext.
Using LINQ, my goal is to display all books in a grid which I have done with:
Dim allBooks = From Books In db.Books _
Order By Books.BookID _
Select Books
Me.BookBindingSource.DataSource = allBooks
Next I need to display all majors in a listbox. I would like the description to be shown however I am only getting the majorID to display with the code
lstMajors.DataSource = db.Majors
I have tried db.Majors.Description, however I am told then that Description is not a member of the LINQ table. and my final goal is to display all the books for whichever Major is selected in another data grid. This is what I am primarily concerned with right now. When using the SQLClient classes, I was able to create a string joining the tables (also had the description properly showing in the listbox, but that is of little importance right now to me). In the video tutorials I was able to watch whenever the tables were dragged from the database into the OR designer of the LINQtoSQL.dbml class file all of the associations were already there and the narrator only really had to do some drag and drop. Not only is drag and drop not working without these associations, but I'd much rather learn the code behind it.
I'm trying to insert Username, Password, and Account Balance data into my SQL Database. The code debugs correctly, but when I run the program, I'm not able to use the information I registered with to login with. (I have a separate form that lets me login with a username and password, and that works fine, so it has to be something to do with my register form.) Was this enough information?
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I have a DLL of classes. The first one stores an ArrayList of numbers. A method from the second class takes the ArrayList and must show the numbers in a table . I should not use windows control library. How can I make it show the data in a table?
View 8 RepliesI have been trying to join multiple multidimensional arrays but with no luck. I basically have three two-dimensional arrays as following:
[Code]...
I can use regex to split and add to a listview , i am trying to get it to join back can any one help me on this For Each m As Match In rx.Matches(testStr)
Me.Retreve_Listview.Items.Add(New ListViewItem(m.Value.Split("/")))
this is the statement:select ITE.stock from orderdetails ord join ITEquipment ITE on ITE.product = ord.productnamey goal is to retrieve the stock from ITEquipment depending on the name of the product which has to match from orderDetails table. when I try this on the SQL SMS I get stock in two records of stock (for some reason 2 not 1, I should get 1)and then I try to use it in my application it returns a full set of records from orderDetails table instead of one record from the ITEquipment.
View 2 RepliesI am using visual basic 2008 and sql server 2008. I am trying to retrieve data from a table in sql server 2008. I am using the following code
Dim cn As ADODB.Connection
cn = New ADODB.Connection()
Dim rs As ADODB.Recordset
rs = New ADODB.Recordset
Dim cnstr As String
[Code]...
Is it possible to collect data in this page with table. link here Is t possible to collect and view the data from tables into a ListView control in winForm?Instead of viewing page in webbrowser. i just want to use listview.I found klienma's thread in codebank but i could find a way how to parse table data form the web page.
View 5 RepliesI have a data table.
And I only want to have a single row in this table. I then write the changes to an xml file. The user will edit the row in this table save the values in the settings.properties. And then when ready write the changes to the config file.
However, I am thinking is there a better way. As I have to keep removing the row that was currently added. Then create a new one.
' Add the data to the datatable and write the changes to the config.xml file
Private Sub btnWriteConfig_Click(ByVal sender As Object, ByVal e As EventArgs)
' Only create a single row. All changes must be made to this row only.
[Code].....
how to insert values from textboxs to access table. I am using jet.oledb connection and dataadapter & dataset for data manipulation.
here is the code that i used to insert values into access,but it is not working..
[Code]....
I'm developing a new programme that uses multiple table to store Orders placed via my website, on the form that i have created i have a Combobox that displays the Point of sale name. what i need it to do is when the record is updated in need the Point_of_sale_ID value that matches the name from the Point_Of_Sale table to be put into the Point_of_Sale_ID field on the Sales_Order tableI have added the Foreign Keys for the fields, but i cannot find any help in regards to this, i mainly wor with PHP but have taken on the new challenge of VB & ADO.Net, i have rear several book on the subject and have produced several single table programs but am now stuck!! [code]
View 6 RepliesBasically the code below is supposed to load data from a reader into a datatable, then compare a date to the start date and end date in each row of the table.However, I am getting errors on the if statement indicating Overload resolution failed because no accessible '>=' can be called with these arguments.I can probably do this with just the reader but I am playing around with a data table because I know I will have to learn how to cycle through the records and look at them at some point and this is a simple example I can use to do this.[code]
View 2 Replieswhy my code isn't deleting the selected row in my ListView from my SQL table? it says it works fine in run time and removes the seleced row from the ListView but when i restart the program its there again.
Obviously this is because my code isnt actually deleting the data from the SQL table but i cant work out why not? the code for my delete button is as follows
Private Sub btnDeleteTask_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDeleteTask.Click Dim delete As DialogResult = MessageBox.Show("Are you sure you want to delete this customer?", "Delete Customer", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
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I'm trying to write code that allows a search for a particular record in a data table. The table, imported from an access database has 4 columns, the first being names of cities. I need to search for a particular city and have it display the city name and the other three columns of data for that row in particular text boxes. Here is my code...it is the last sub routine that is the problem...I'm tying myself in noob-ish knots trying to figure out nested loops etc to search... (I've commented some of it out whilst I tried to figure it out but I'm running out of time and patience and my knowledge of VB is limited!!)
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I have created a users database in access and included that database in the bin directory of my project. I have then created a connection to that database using the wizard in 2k8 express.What i need to be able to do is to insert usernames into the users table in the database. I am at a loss of where to start with this problem. Do i need to create a recordset or not? If so how do i write an sql query in VB2K8 to insert data into that recordset and then update the underlying database?
View 1 Repliesi want to know how to view data table in checkedlistbox and view selected record in another form.
View 2 Replies