DB/Reporting :: Returning Data In A Database?
Mar 4, 2010
I would like to return the data in a database query as an array, but the problem is, Im having trouble working out how to do it, here is how I would like the data to be returned:
array (
---> 1
---> ---> 1
---> ---> ---> fieldname
[code]....
I could create a multi dimentional array, but the results could range from 2 rows, to 2000 rows, I looked into redim, but you can only redim the last dimention, I would need to the first and second, but not the last.
View 2 Replies
ADVERTISEMENT
Oct 21, 2008
I am building an application where a button click runs a sql query and shows a user the next available date that they can process from. The problem was that it needed to be the following Sunday and not the following day. That code looked like this:
Code:
Public Class Form1
Dim ReturnValue As Object = Nothing
[code]....
Code:"select payrolldate from payroll where(payrolldate <= getdate())and payrollran <> 'yes'")but when I add that query it just returns a value of 1/1/000 as the date.
View 1 Replies
Oct 11, 2010
need to get the data from Cell(2) on my gridview but cant figure it out. id like to put it in a varible im using VB 2010 express ed. what im aiming for is to show a popup box showing of my note and to show the date. by compairing in a loop of all entries if the date is falls on the date that was picked on the entry.
View 1 Replies
Dec 29, 2008
How to direct put (without someone key in) the data into the database with VB? The data will automatically generated by the program..
View 5 Replies
Jul 30, 2009
How to i insert Variable @ClassID(If Identity Propeties) @LecturerID , @StudentID and a Date from Calendar Control into the Date Collumn , into a Database Called Fingerprint, TableName= Attendance.
The Collumn Are ClassID, LecturerID, StudentID, Date.
View 5 Replies
Dec 24, 2008
I have an Access database with a table called Events.I created a new VB.net 2008 project and created a MicrosoftReportViewer control. I also added a "Report" component (which created a .rdlc file).I am easily able to drag things from my Access database I added to the data sources onto the report. However, one part of the report I would like to add data to a Matrix that I calculated with VB (ie it is not in the database). The database has a list of names and a bunch of times associated with each name. and then I calculate some fancy stuff based on those times. I would like the matrix to be a list of names (from the database) on the rows, a list of dates (which I specify in the code) on the columns, and the data of the matrix I also calculate.
View 3 Replies
Feb 25, 2008
Ive got a web page so that the users select a day from the calendar and the date is input to a text box, the format is dd/mm/yyyy, it is the same format in the database table.
I want to select the data from the database when it is = the date in the text box but it is retrieving data in mm/dd/yyyy format. My sql is:
SELECT Booking.Date, Booking.RoomNo, Booking.Lesson, [NoComps] - " & students & " AS diff FROM Rooms INNER JOIN Booking ON Rooms.RoomNo = Booking.RoomNo WHERE booking.Date= #" & txtdate.Text & "# AND booking.Lesson = '" & lessonlist.SelectedValue & "' AND booking.Type IS NULL
how can i make sure it retrieves the data using the correct date format?
View 1 Replies
Aug 18, 2009
I'm working on a VB.Net Windows form that is supposed to manipulate an Access Database. I can Already read data from the database (placing them in a combobox) using the following:
Code:
Private Sub Form2a_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
OpenFileDialog1.FileName = ""
OpenFileDialog1.Title = "C# Corner Open File Dialog"
[code]....
View 4 Replies
Jul 21, 2009
I was wondering which way would be the easiest in VS2005 to connect to and pull data from a MS SQL database. I have already setup the database connection by choosing the datasource for a DataGridView but I'm not able to retreive any information.
The steps I have taken so far:
1. Make new form
2. Drag and drop DataGridView onto the form
3. Setup the data source and respective username password
Not sure where to go from here....
View 1 Replies
Apr 23, 2008
I am using Visual studio 2008 to build a web application. What I am trying to do is retrieve data from a database and populate text boxes based on the results.
View 4 Replies
Jul 4, 2008
I need to extract specific data from a database. With starting point in this data, I will collect information on the internet. After the information is collected I need to check if this information is already stored in the database, and if not, then add it. This action is being repeated about 500-50000 times each time the procedure is being executed. (not often)
The approach I'm taking seemes sleazy and ineffecient and I was hoping you could point out some places where I might be able to optimize it. I've two open connections at the same time. The first I use to extract data, and it stays open throughout the whole session. The second connection is being used first to check if an entry already exist and if not, to add the data.
The reason I am using two connections is due to the fact that I got a reader bound to the first one, so it is rendered unavailable.
I was thinking that maybe checking if the data existed, and adding it if not, maybe could be contracted into one command execution instead of two. I don't know if it would be possible to do this with one connection only as well, as it seemes more proper.
View 5 Replies
Jul 25, 2009
I recently made a database that saves user information into a MS Access database from a form.
Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
objDA = New OleDbDataAdapter("SELECT * FROM CDetails",
[Code]....
Now when they go to the next form, I have labels such as lblFirstName, lblSurName ect. I want to display the information that the user has inputted into these labels. How can I fetch data saved into the database and display it onto these labels? and how can I select rows?
View 3 Replies
Dec 12, 2008
i am trying to update database with updated data in data adapter. here is error message. "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." here is my code.i get this error when i try to update dataadapter with following line.
[Code]...
View 2 Replies
Apr 19, 2009
I've been staring at this and can't seem to come up with a solution. I've tried several different methods that i found on the web but to no avail. I'm hoping you all could take a look at the code below and give me some direction as to why I'm receiving the error "The INSERT INTO statement contains the following unknown field name: 'Deposit_Date' . Make sure you have typed the name correctly and try the operation again. Sorry if it's kinda jumbled below
Code:
Dim SQL As String = "INSERT INTO Deposits ( Deposit_Date, Deposit_Time, Location, Miscellaneous, " & _
"Miscellaneous_Adjustment, Dispense, Dispense_Adjustment, " & _
"Replacement_Card, Replacement_Card_Adjustment, Deposit, " & _
[code]...
View 12 Replies
Jan 29, 2010
I am using the following Select Statement to retrive data from my .csv file database:
Code:
Dim comm As New OleDb.OleDbCommand("Select *, Left([Street Full Address], IIF(InStr(12,[Street Full Address],'-')>0, InStr([Street Full Address],'-')-1, Len([Street Full Address]))) as StreetFullAddress From " &
[Code].....
View 4 Replies
Apr 29, 2009
Source: DataTable
Destination: Access Database Table
I should mention that the DataTable contains data resulted by an SQL SELECT query and it's not related to the "targeted" Access Database Table.
View 1 Replies
Mar 31, 2011
I am creating a reporting app that pulls information off of a Sql database and populates the data in a datagridview control (DVG). I am using tab pages (Tabcontrol), and I have about 10 tabs with within the control. What I have done is created a dynamic control that will populate in each tab page once the tab is selected. I am using a split container and in my split container.panel 1 is where all my buttons and search functionality will be. In my split container.panel2 to is where the main DGV control will be. I have got this to function properly, however now I am unable to add anything to my split container.panel1. I would like to add diffrent labels and buttons in the panel1 one without putting another panel on top of the split container.panel1, and also if i do this when I resize my container the panel will just sit there. I am using the selected index changed event to get my split container to show in each of the diffrent tabs
Private Sub searchTab_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles searchTab.SelectedIndexChanged
searchTab.TabPages(searchTab.TabPages.IndexOf(searchTab.SelectedTab)).Controls.Add(splitContainer1)
[code]...
View 4 Replies
Mar 12, 2012
I'm faced with a (fun, actually) data mining problem; I have raw ASCII files from instruments, and I want to move that data (~400 GB) into a database, then be able to run various algorithms determining correlations of time series, etc. I would like to write the mining algorithms in Visual Basic (.net, VS 2010 right now), and be able to do visualizations with VB code I have in hand.On the nature of the data: think of a set of several thousand devices, each recording a measurement at a given interval - so I'm talking time-series vectors. It's not more complex than that - though I may have vectors with holes, etc. - not sure what problems of that sort lurk in the data.I spent today re-acquainting myself with VB.NET's interface to (in one case) a Microsoft Access database. What used to be fairly simple - DAO I think it was - involved tables, recordsets, etc (and that would likely be fine). Now I seem to be required to have a weird variety of generally useless objects, e.g. 'adapters', 'datasets', etc. The problem is that I know exactly what I need, and all this extraneous stuff just gets in the way (certainly in coding complexity and opaqueness, and likely in efficiency as well). If any of these mechanisms gave me a kind of virtual access to the entire dataset, and let me control caching parameters, etc.it might be great, but I found nothing along those lines. It seems like useless bloat, though I suppose it must be useful to someone.Anyway, I tried a number of different approaches, and none seemed at all aimed at what I need to do: efficiently do math on a large dataset. I can't believe I'm the first to have this problem, but I can find no useful wisdom out there. I'd be comfortable with pretty much any underlying database mechanism: MySQL, SQL Server, MS Access, but ideally something generally SQL based (I may eventually have to transition this entire system to draw from a client's SQL database, though that's not an overriding concern now). Other than that I want simplicity and efficiency. I thought my old ODBC techniques would work, and to some extent they do, though modifying tables seemed to have bizarre problems (no errors, but not modifications either).
I do have a fairly aggressive deadline to show some algorithm results, so my focus in the short term is to get something reasonable working *in* the short term - in other words, it's less important to me to pick the 'fastest' relational database than it is to pick a database that lets me focus on coding the algorithms, not working through tedious data access coding. If this db could be any smaller, I'd have tried to do it all 'in memory' at least for proving concepts; I don't want to have to learn an entire jargon and approach just to be able to retrieve data points.Perhaps I'll need to bite the bullet and just write something myself, a .dll perhaps just to save and restore large time series vectors. It seems a bit frightening to me that one would have to do this in this age, what with all the database systems out there, but I don't have much time to work through arcane interface logic.
View 2 Replies
Dec 22, 2010
I typed this question once already, hit preview, and somehow never got the preview and lost what I typed. It has been that kind of a day.So here is my quick overview then I am going shopping. I am using OLE DB to select from an excel spreadsheet. It has over 15000 rows and 33 columns. Sometimes even when a cell is not null, it is returning a null value. If I just do a "select * where [termination date] is not null", for example, it will return no rows even though I can see with my own eyes that sometimes termination date is not null.
View 9 Replies
May 25, 2010
In my codebehind I have this vb:
Dim reader as idatareader = includes.SelectDepartmentID(PageID)
While reader.Read
Did = reader("departmentid")
[Code].....
No Errors are being presented yet nothing is being returned by the reader. Is there an error in my code?
View 2 Replies
Mar 30, 2009
I have a problem which I have tried to solve in several ways, and by searching the Internet for various terms, searching through books and Visual Basic instructional videos, but none have yielded the correct results. My goal is as follows:
1. Create a Database listing job names, job numbers, and a link to the file about the job.
2. Create a form with 2 text boxes, a search button, a box to display results, and a preview panel.
The two above steps have been completed. The following is where I get stuck
3. I want to search for either the job name, and/or the job number, have VB search through the database and return the results in the results box.
4. On clicking on one of the results in the result box, the preview panel will show a preview of the file.
Notes:
i) The files being linked top are Microsoft Excel files.
ii) The box I have used for the results currently is a listbox, though I've no idea if this is the correct choice for what I want to do.
iii) The database I created is an *.xml database created in Visual Basic. I am a fair beginner to VB, learning as I go, but I'm stumped as to how to achieve this so any pointers on how to achieve points 3 or 4
View 2 Replies
May 2, 2012
I have created a function which essentially enables me to output anything I need from my database in a similar method to Facebook's FQL querying method as a JSON text result. I can also use the same function to get the output as a Dictionary, or List of(Dictionary) to use with VB functions for other purposes.
[Code]...
View 1 Replies
Apr 21, 2008
I want to move my programs and the database to another computer and hard-disks. It looks to me as though I nearly have to re-create the controls and rewrite some of the code to make it so the programs still work after the move. At least with ODBC all I would change was the DSN definitions external to the programs. Is there an easy way to move or rename a database without loads of work?
View 3 Replies
Jul 12, 2010
How could I call a module or something else to return data to me after its ran. I don't want to make my form1 code all messy.
Public Function Test() As String
Return "Tes34t"
End Function
[code]....
View 2 Replies
Dec 29, 2010
Every 5 to 10 seconds I receive 5-12 bytes of data (confirmed w/Hyperterminal). I can open the com port(btn1), read bytes(btn3) until bytes to read = 0, but then i'm stuck; the data received event doesn't seem to respond. If I close the serial port(btn2), re-open i can read more data until bytes to read = 0 then stuck again. I tried several suggestions for threads and delegate and invoke but none worked. (WIndows XP, VB 2008)
[Code]...
View 19 Replies
Oct 28, 2010
I am trying to debug my code, which involves a simple webservice that passes parameters to a data class, which calls a stored proc, and returns one row of record. I am not getting any error messages, but I am not getting any records back either.[code]
View 1 Replies
Mar 30, 2008
I am trying to copy a table from a network database to a local database. I used DAO and could check if the network table existed using a function that tried to assign a TableDef object to the table in question. If there was no error then I assumed that the table existed and the function returned true...Or it would error out and return false.I could then proceed with the copy or not as the case may be.I am converting the code to ADO.net and need to know how to check for a table. [code]
View 1 Replies
Apr 23, 2012
I have a table with several rows of data that I need to return to the controller. In my view, I initially load the table by selection of a time period and clicking a button. The table loads all my relevant records but one of my table cells contains a dropdown list. So I should be able make a selection in the dropdown click "update" and my controller saves the changes.
So everything works until I try and save. The model that is sent to the controller is completely null. The list property I have tied to the table cells returns to the controller null.
[Code]...
NOTE: This is written in VB.NET but C# help is welcome. I am familiar with both languages in MVC.
View 3 Replies
Jun 7, 2010
I have a MDI app that I am creating. It, of course, will have multiple MDI child forms. In each child form, I have an options button so that each child form can have it's own set of options. When I click the options button it opens an Options form. This options form is not an MDIChild.
I have a class that contains the child forms options. I pass this class to the options form using a constructor. This is how I call the options form:
Dim dlgPatternOptions As dlgOptions = New dlgOptions(thisPatternOptions)
thisPatternOptions is the class that I am passing to the Options Form.
This works fine and the options form does populate the options correctly. The Options form constructor is this:
Public Sub New(ByRef thePatternOptions As CanvasOptions)
Me.InitializeComponent()
Me.txtCanvasWidth.Text = thePatternOptions.CanvasWidth.ToString
Me.txtCanvasHeight.Text = thePatternOptions.CanvasWidth.ToString
End Sub
I change the options in the options form. How can I get those changes back to the calling form? Do I need to somehow pass a handle of the calling form to the constructor to get the changed values back to the calling form? Is there some way to pass a handle to the options form so that changes made to options will be pushed back to the calling form?
View 2 Replies
Jan 4, 2011
I have a view on some data in my database it returns the data as I would expect, for example
Call Date To From Phone Number
20/1/2010 00:00 23:59 08923233223
20/1/2010 00:00 23:59 08923233245
However when I have added this to my Entity Model and query it I get duplicate(and unexpected) data appearing
Call Date To From Phone Number
20/1/2010 00:00 23:59 08923233223
20/1/2010 00:00 23:59 08923233223
I am simply binding a Entity Data Source to this Entity but I am left scratching my head as to why the data is being returned differently
EDIT: Interestingly this can't be the result of some strange under the hood join as the row counts match as expected. I have also put together a query myself to test with the same odd results.From o In App.Entities.v_PersonalRules Where o.companyid = CompanyID Select o. I am using Visual Studio 2010, .NET 4
EDIT: The front end code is fairly simple
<asp:EntityDataSource ID="EDS_Personal" runat="server" ConnectionString="name=Entities_NEW"
DefaultContainerName="Entities_NEW" EnableDelete="True" EnableInsert="False"
EnableUpdate="True" EntitySetName="v_PersonalRules" EntityTypeFilter="v_PersonalRules" >[code]....
View 2 Replies
