OledbConnection Not Reading All Data From Excel?
Jan 24, 2012
I'm developing application in VB.NET 2008.I'm reading data from Excel through OledbConnection. Here data are reading sometimes perfectly but sometimes it is missing to read some data.
Example :In Excel ,I have 79 columns in excel and 4 rows , first 3 rows are headers so after import i'll delete that rows and actual data starts from 4, so here i have only one row.After Reading through oledb, that dataset's datatable has only first 3 rows( first row became header and 2 & 3 row only in datatable, its ignoring 4th row)
[Code]...
View 8 Replies
ADVERTISEMENT
Mar 10, 2009
I took oledbconnection with excel file, after disposing this connection i m still unable to open that excel manually,It shows some access error.
View 1 Replies
Mar 4, 2008
I am currently writing a program in vb.net that will read and write to an exel sheet using OleDbConnection. I can read in from the file fine. When I save to the excel sheet and open it, the changes are there, however, when I close the file it asks me if I want to save, which makes me assume that the changes are not saved even thought they show up.
Below is the code I am using:
Dim conn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & excelPath & ";" & _
[Code]....
View 2 Replies
Sep 8, 2009
I've got a little app that uses oledbconnection to extract data from an Excel spreadsheet. I need this app to support .xls and .xlsx files. The app runs fine when I give it a .xls but when I select a .xlsx it crashes with an exception on my cn.Open command.
View 1 Replies
Mar 10, 2008
I'm a new VB programmer, although I have a decent background in java.Anyways, I'm learning VB and I'm trying to read data from an Excel file using VB 2008 and can't figure out how to accomplish this. I can't seem to get any data from the Excel spreadsheet to display in a simple Windows form. Also, there's a decent amount of data in the spreadsheet so I was wondering if it makes sense to just read data as needed from the excel spreadsheet or if there was some type of data structure that I could import the entire Excel spreadsheet into and do my analysis from there.
View 1 Replies
Nov 10, 2011
I have a question about reading data from txt file and importing(transfer) to the existing excel file.for example I have "test.text" which includes some numbers listed below.[code]I want to put each number to separate excel cells by using Vb.net.
View 1 Replies
Oct 5, 2011
I have never read from an excel file in VB.NET before so sorry if anything is off.I am downloading an .csv file from a vendors ftp service that has 8 columns ( style # - mfr.item # - description - metal type - availability - center weight - total weight - retail value )I am trying to retrieve all data in the rows bellow style # and retail valuethere are roughly 4,649 rowsI am not sure how to do this.
I load the excel file using the microsoft.office.interop.excel:
Dim eApp As excel.Application
Dim eBook As excel.Workbook
[code]....
View 2 Replies
Mar 4, 2010
I just tried to read data from an excel sheet. I just found some code on net. But it is not working for me. I'm unable to debug, since i don't know how to make use of the ADO.Net [Code]
View 3 Replies
Jan 8, 2010
I want to create thread for reading data from Excel. I found this link.url...I download the sample project and tried to run the project.First I build the project using visual studio 2005 and add reference the NetFX20Wrapper.dll..When I run the project, I got error "ActiveX Component cannot create obect" in the Line "Set background = New NetFX20Wrapper.BackgroundWorkerWrapper"
View 2 Replies
Sep 30, 2010
G'day all, I've been on google for far too long trying to figure this out, so hopefully somebody can point me in the right direction. I'm trying to write a program that will open an Excel spreadsheet and read data from specific cells while preserving datatypes, so that I can write the data to an XML file. The basic functions I need to perform reduce to:
[Code]...
View 5 Replies
Mar 27, 2012
I am trying to build an app that can search column A in an excel document (with textbox control). In column B, I have info about the column A items. When a column A item is searched, I would like a textbox (or similar) to display info about it from column B.
View 6 Replies
Sep 28, 2011
I am reading in data from an excel file that is only viewed inside the program. This excel file is being populated by data from multiple PLCs (7) through DDE links via RS Linx Gateway. I would like this data to be written to two different excel files and specific sheets within those so that it can be viewed later on.
My program has a form that will allow the user to view the data live, meaning they look at the first excel file from the program so that they are not able to edit the DDE links or change the file in any way. The other excel files (there will be two, one for good parts, one for bad parts) have specific sheets for each part and each tester station. For example, if the part is a ABC part, and it is a good part, and it was tester on tester station 1 then it needs to be saved to the good parts excel file, in the ABC sheet and in the good tester station 1 sheet.
If part XYZ comes along and is a bad part (fails testing) then it needs to be saved to the bad parts file, the XYZ sheet and the bad tester station 1 sheet.I might have added more detail than is needed to solve the problem but I thought I would add it anyways to help you all understand my problem a little better.
View 18 Replies
Mar 29, 2012
I have some trouble with opening a excel sheet and getting some data out of it.
I want my program to have a button, when pressed, gives a "select excel file" popup and then load the data from some cells into my sql database.
So, when opening a excel file the program should get the data from cell D3 to D8 and put that into the sql database.
I now have the following, but that will only open the excel file.
Public Class Form1
Dim oConn As ADODB.Connection
Private Sub ConnectDB()
[Code]....
View 1 Replies
Apr 24, 2011
Dim con As New OleDb.OleDbConnection
Public outputs As New DataSet
sub main()
sqlquery("SELECT * FROM Students", "mark")
[code]....
Here is an image of my table data and design I am trying to read some values from a database using the oledb dataset however when I run the sql command and get down to outputting the value I am greeted with the following error: "IndexOutOfRangeException: There is no row at position 0.". Yet when I run the very same sql command in access I get back the data I wanted.When I am running the above code, no errors are produced until I get down to the last writeline where I want to output my data.
View 1 Replies
Jun 9, 2011
i hve create 1 listview and all data from accessdatabase (using oledbconnection)in database hve 4 column, so in listview 4 column..can i view only 2 column in listview, example only column 1 & 2 only in listview.
[Code]...
View 1 Replies
May 21, 2011
I want to import data from excel and move that to Datatable in VB.NET 2008. I wrote and working but its taking too long time.. for 1500 records its taking 4.40 min.
[Code]...
View 1 Replies
Sep 5, 2011
In my application I read data (using data binding) from an Excel spreadsheet into a DataGridView. This works, but the data columns contain text fields (strings). I would like to set the data type for some columns to "Date" and Decimal. I cant do this on the DataGridView (error: cant change properties for data-bound stuff) and I cant figure out how to do it on the dataset or data-table that I bind to the DataGridView.The following is the code I use to read and bind the data:
Using con As OleDbConnection = New OleDbConnection(cs)
'
'open the OleDbConnection
[code]....
The commented out code (below the 'Todo: comment) causes a additional table, but I want to change the table with the data.
View 2 Replies
Aug 25, 2011
I use an OLEDB connection to read from an excel database, and this loop to read in all of the data from each of the columns
While reader.Read()
For i As Integer = 0 To reader.FieldCount - 1
temp = reader(i).ToString + ControlChars.Tab
output_file.Write(temp)
[code]....
Some of the columns contain date information, which are read in fine (usually as a string "2/20/2011" or so), but the headers of those columns are read in as a blank "". The headers for all the other columns read in fine, but not for the date containing columns.
View 2 Replies
Jul 1, 2009
I am trying to read some data from an Excel 8.0 worksheet using OLEDB thusly:(Warning - contains curly braces)
Code:
DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb");
using (DbConnection connection = factory.CreateConnection())
{
[code]....
The problem is that for some columns it sets the data type to be Double even though the spreadsheet column format is "Text" and teh column contains non-numeric data. Then when it gets to that cell it returns DBNull instead of the text value.
View 1 Replies
Sep 15, 2010
I have been trying my hand at this for some days now and just cant get anything to work. Below is the code im currently using to delete a row from a database table, the problem when trying to build the project line 5 is giving this error about the value con" Value of type String cannot be converted to 'System.Data.OleDb.OleDbConnection' "
Dim con As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=Customers.mdb"
Dim cnn As New OleDb.OleDbConnection(con)
cnn.Open()
[CODE]...
I have also tried using this code below, but to no success. Im basically just looking for something rock soild that i can use to accomplish this task. Been stuck on this for quite a while now.
CustDetailsTableAdapter1.Connection.Open()
Me.CustDetailsTableAdapter1.Delete(txtDelCustN.Text, txtDelCustSname.Text, txtDelCustTel.Text, txtDelCustAddr.Text)
CustDetailsTableAdapter1.Connection.Close()
View 13 Replies
Sep 9, 2010
I want to reading in a excel file and extract the sCodenumber sDescription ans the sStatus and store them in a array : StatusComposeArray(5200) As MyCompose. After this I need this array for comparing outside this class. But as can you see the array is defined inside the sub: ReadingIn_ExcelFilesCompose [Code]
View 2 Replies
Oct 23, 2009
The following code works fine but seems to leave instances of excel.exe running in the background. How do I go about closing out this sub properly?
Private Sub ReadExcel(ByVal childform As Fone_Builder_Delux.frmData, ByVal FileName As String)
' In progress
childform.sampleloaded = False
[code]....
View 2 Replies
May 23, 2010
Why I am getting the following error:
Error: "ExecuteReader" is not a member of 'System.Data.OleDb.OleDbConnection'.
The following is the
Private Sub txtSearch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
Dim MyReader As OleDbDataReader
If txtSearch.Text <> "" Then
[code]....
View 1 Replies
Mar 27, 2012
I am trying to build an app that can search column A in an excel document (with textbox control). In column B, I have info about the column A items. When a column A item is searched, I would like a textbox (or similar) to display info about it from column B.
I have never done any Excel related programming, so I don't know what to do, or where to start.
View 6 Replies
Sep 26, 2010
I'm trying to read an Excel xls file into a dataset with OLE. I can do that, but it's loosing data. The sheet is formatted with merged cells on the first 11 rows and after that it's just a table. I need to read this with OLE, because the server on which this web-application is working does not have Excel installed.
If I remove the first 11 rows with excel, then save it and then let my program read it, all is fine, but with those rows, it's ok. The excel sheet has header names in row 12. After the read in to the dataset, some of those cells with the header names are empty. I assume this is caused by the formatting. Is there any other way to open and read an excel file on a server without Excel or expensive dll's? Is it possible to open the xls file with OLE, delete the first 11 rows before using da.fill(dataset,tablename)?
View 1 Replies
Jan 4, 2011
i have this code that i am using to read from an excel spreadsheet but it i giving me an error saying that i am not not giving the exact name of the table.i have uploaded the excel spreadsheet as well. [code]
View 5 Replies
Aug 30, 2010
I have a .csv file (created by external program). In my vb.net application I want to read the last cell value. External program updates the last cell value every 3 sec.For this I use the below code. But cpu usage increases (because timer event opens&closes new excel sheet every second)I was successfully doing this with vb6 without any problem, but with vb.net I'm stuck.
[Code]...
View 10 Replies
Nov 21, 2011
I have a VB.NET app which pulls some data out of an Excel file and puts it into XML.Originally, I read from the Excel file using an OleDB connection but then when we deployed the app to the test server, it gave an error saying that some Jet database components needed to be registered on the server to read from Excel and we're not allowed to register those on the server.Then, I rewrote it using the Microsoft.Office.Interop Excel components. Apparently, however, that needs to have Excel registered on the server in order to work and we can't install that either.Is there another way to read data from Excel using VB.NET which doesn't require anything but the .NET Framework on the server the app is running from? It's just a few simple rows of data with no formulas or macros or anything and I just want to grab the data out. It seems to me that this shouldn't be all that complex.
View 13 Replies
Aug 25, 2011
i am importing data from Excel workbook having around 30 sheets in each book. Application works fine but after uploading few books it gives error continuously Exception from HRESULT: 0x800AC472 i used thread.sleep(1000) for each workbook into folder remove that? if these due to hyperlinks in some sheet, is any way to disable hyperlinks through code in vb.net
View 1 Replies
Dec 7, 2009
I am having problems reading the contents of an excel file into a combo box I am using the following code but the only thing that is populating the combo box is "System.__ComObject"
XLbook = GetObject(pthSup & "offices.xls")
XLsheet = XLbook.Sheets("Offices")
Dim i As Integer
[Code]....
I am relatively new Visual Basic and programming in general and I am trying to update a program I wrote for AutoCAD in VBA to the .NET frame work
View 1 Replies
