Dim cmd2 As New OleDbCommand("SELECT Product_name FROM Products WHERE Quantity <= 5 ", cn)[code]..
This code outputs all the products in a list box which are below a quantity of 5, however for those products i wud also like to retrieve the maximum stock level which was assigned to all of them so i can calculate how much more is needed to fulfill the maximum stock level
I know this is basic, but my mind is totally blanc. I'm trying to retrieve all records from a table with a specific code.
Dim cmd As New MySqlCommand("SELECT myValueRow FROM myTable WHERE searchRow = 'test'", myconnection)
myreader = cm.executereader
[Code]...
I'm doing a simple database thru VS2008 and Msaccess without using any builtin relationship between records, now i need to know how i can retrieve specific data from access using the oledbadapter or any, example seek if the value from the textbox1.text is already existing in msaccess table then msgbox "Record already exists.", note that the code is in keypress event of the textbox1.
View 2 RepliesI can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
View 4 RepliesHere's the situation: I need to navigate to a list of sites and retrieve data from them; I know how to retrieve the data, but I'm unsure of the best way to navigate to each of these sites.
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I'm using vb.net. Usually I used the SQL Server SQLComamnd but here I need to use an ADO. I have this but I'm stuck at the end of it how to get the data? [code] How do I actually retrieve this record?Is there something akin to the SQLCommand that has Reader?
View 1 RepliesI wish to retrieve all records for a particular day. The user can choose a date from a calendar and once click on ENTER,all the records for that day will be display out. I am able to choose the date using MonthCalendar and display it onto a label. But the sql statement of displaying it onto a datagridview shows no result.
This is my sql statement:
HTML
MyCommand = New OleDbCommand("SELECT * FROM cable WHERE 'Date_Time' = "& Label6.Text,MyConnection)
My records in MS Access is in this format:
mm/dd/yyyy xx:xx:xx AM/PM
I would like to do like this...When I click a button, it will capture the times the button had been click retrieve 10 records at one time...For example, when the button being click for first time, it will retrieve the first 10 records and put into 10 textbox. Then if the the button being click for second time, it will retrieve the records from 11 to 20 and put into 10 textbox and so on. I had the following codes:
[Code]....
Okay, So I am trying to get my vb.NET Application to retrieve all the data in the database. My connection to mySQL is working and i have been able to fill a DataGrid with data from the database a function[code]...
View 13 RepliestheyI had a asp.net (vb) web application to store work overtime (OT) records. In SQL server, the OT table likes this, e.g.:
[Code]...
As user will input previous date OT records, so the records in db will not be in sequence. the date of records#14 is before records#13. if user want to know which OT records cover the last 2 hours, the system should retrieve record #15 (90mins) & #13 (30mins) because they covers the final 2 hours. How to write the SQL statement to retrieve the records?
Is it possible to have a quick and easy way of retrieving the last 10 records from a table?
Currently what I have been doing is retrieving all the records then one-by-one cylcing through each record until I have the last 10. To me this seems to have a lot of over-head reading each record. I just wondered if there was a quicker way of doing it.
Like we can retreive all the records from a table using this method:
While (Not rst.EOF)
....
End While
How to retrieve all the records when using OleDbConnection?
Here is what I'm working with:
Dim connstr = "data source=mydatasource;initial catalog=gcs_dw;persist security info=True;user id=myuser;password=mypassword;Asynchronous Processing=True"
Dim sqlquery = "SELECT * FROM Customer WHERE CITY = 'Anytown'"
Dim connection As SqlConnection = New SqlConnection(connstr)
connection.Open()
[Code] .....
As you can see, I'm attempting to display the results of the query to the commandline and currently all it is displaying is "System.Data.SqlClient.SqlDataReader". Where are the results of my sql query going and why can't I retrieve them?
I know how to loop through a GridView and extract each row using the for each loop as below, but I was looking for a easy way to loop through the datagrid and say extract the last 20 rows? Is it possible to go through in reverse order in vb.net?
For Each row As GridViewRow In InventHistoryGridView.Rows
I tried using the following codes but it's not working,
Dim Con As oledbconnection = new oledbconnection()
con.connectionstring = "Provider = Microsof.jet.OLEDB.4.0; Source=c:\program file\database.mdb"
dim sqlcmd as oledbcommand = new system.data.oledb.oledbcommand()
sqlcmd.commandtype=commandtype.storedprocedure
sqlcmd.commandtext = "query"
[Code]...
I would like to display the multiple records in multiple textboxes Following is my tables and data:
tblJan with these data:
col id
1
2
3
col January
10
20
30
now i want to display the value 10 in one textbox and the value 20 in another textbox and so with the value 30 in another textbox..
I have combobox for year and combobox for month concatenated to make the date format "2012-01" My db field is RecordDate and is smallDateTime In my select statement im trying to use the left function to find match my concatenated string to the RecordDate field.Here is my code, hopefully someone can help me. Currently im getting the error "Conversion failed when converting date and/or time from character string."
Dim newRecordDate As String = (CStr(ComboBox2.SelectedValue)) & "-" & val1
Dim val10 As String = CStr(Convert.ToDateTime(newRecordDate))
Dim val21 As String = Microsoft.VisualBasic.Right(val10, 7)
MsgBox(val10)
[code]....
So I've been playing around with SQL strings in VB 2008, and trying to retrieve records from a database and display them in a data grid view. This is the part of the code that gets the fields and displays them in the data grid view:
[Code]...
I am new to VB and trying my hand at the below code. I am trying to determine the number of records for each possible combination. Depending on the outcome of the number of records groups may be combined. I am not able to find the record count for each grouping. Can you please look at the code below and suggest what I am doing wrong?
[Code]...
I have two problems with my datagridview in VB 2005 that I did not encounter in VB6. I would like to add multiple records to a datagridview by allowing the user to tab and type.When they get to the end of a record and tab it should go to the next record like Access does. The user can move to the next record and it even shows the pencil on the left leading them to believe that a new record is being created. But, it will not create the record unless they first click on my button that will add the record with the code BindingSource2.AddNew(). I use a bindingsource to populate the datagridview. Here are some snipits of my code for clarity:
DataGrid2.DataSource = BindingSource2
GetDataDetail(
"Select * from [Order Detail] Where [Order Detail ID] = Null")
[code].....
i can't seem to add to records on the one row i get the error saying "Column count doesn't match value count at row 1"but it works when i only add one record.
Imports MySql.Data.MySqlClient
Public Class PatientInfo
Dim ServerString As String = "Server=sappracticedb.db.7735192.hostedresource.com; User
[code].....
I have problem and I've been looking for a week now on how to solve it. Yesterday I thought I solved but apparently I didn't when I tried the query with new data added in my database.Here's my query
Public Function getTicketsByBeginstation(ByVal station As String) As Array
Dim r As Array
r = (From u In treinDataContext.Tickets Where u.ritId =[code].....
The problem I have is: when I have a station selected there are more than 1 trajecten (connections in English) but I had to use the .first else Visual Studio would give the error "the '=' operator is not defined for 'integers' and 'system.linq. IQueryable(of integer)".
So I give the name of a station -> I have to select all trajectens with the given station as beginstation -> I have to select all ritten which have the given trajecten -> I have to select all tickets which have the given ritten So: I have to show all tickets for a certain station.
I have following data in my table:
slno Name Age City
1 Ron 22 Dallas
2 Jonny 26 Texas
Now i use the following method to access data:
Try
Using connection As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=E:Visual Studio 2008ProjectsSmart SyncronixSmart SyncronixSmartDB.mdf;Integrated Security=True;User Instance=True")
[Code]....
I have a form that is going to displays the same field from each of my 185 records. How do I get it to show all records for that field without using a data grid. If you think of this form as a layout of a parking lot and each field is a parking spot then what I am trying to do is display the assigned parking spots. When you click on the spot I want to open a second form that I already created to display and edit that spot.
View 3 RepliesqueryStr = "INSERT INTO tbl_user_ldr_responses (rec_num, ques_no, response, comment) " & _
recnum & ", " & "1, " & "'', " & reader.GetValue(1) & " UNION ALL" & _
recnum & ", " & "2, " & "'" & reader.GetValue(2) & "', " & "''"
How can I fix my string so that it will resemble the below SQL code to insert multiple records with one insert command?
INSERT INTO thetable (field1, field2)
SELECT value1, value2
UNION ALL
[Code]......
Using the FileHelpers library to do some great things in VB.NET. Parsing files with dynamic classes built from text file templates. One thing I can't find: A way to read in a single record and determine that it should result in the generation of two records.[code]Ideally in this next line I would like it to see certain conditions and be able to generate two records from a single source line. Dim PayRecords() As Object = engine. Transform Records(FromRecords)Alternately, if there is a way to implement the "ITransformable(Of ..." TransformTo() and have it return multiple records, I could put the logic in the dynamic class definition TransformTo() method.[code]
View 1 RepliesHow to create datatable with multiple records.
View 6 RepliesI wish to insert a row into an SQL table a multiple number of times. The only field that will change is the Primary key ID which will update automatically.
To enter the INSERT into a loop seems very inefficient (time). The only other way I can find to do this is build up an array of values and do a multiple INSERT but again this seems very inefficient (memory) when the values will all be identical.
Is there a way of saying insert this row a variable number of times?
I'm trying to save the contents for a listbox, which can contain up to 10 records(items) as follow:
1 + 1 = 2
1 - 1 = 0 and so on.
The code that I currently have is recording only the last item of the listbox
Below what I have so far:
Imports System.Xml.Serialization
Imports System.IO
Public Class SerializeData
' Save - serialize the object to disk...'
[Code].....
How can I update multiple records in a database using one Update statement where the cases are different.
refundNumber = CASE _
WHEN salesRecords.invNo='1' AND itemNo='250' AND length(refundNumber) > 1 THEN _
concat(refundNumber, ', 88' ) Else '88' _
[Code].....
How could I translate this to an SQL CASE string?