Using A Data Reader To Read An Excel Spreadsheet And Want To Update A SQL Express Table?
Mar 10, 2009
I am using Visual Studio 2005. I am using a data reader to read an Excel spreadsheet and want to update a SQL Express table. The datatypes in this table mimic a software application I will eventually be passing data to and are listed in the comments in my code. No matter what I do or change, this will not run. I even populated my spreadsheet with zeros and this will not run. I have found many suggestions on the web and tried changing things but nothing seems to work. I also don't know specifically which variable is causing the error or the proper way to make sure there are no blanks in this spreadsheet.The error says "conversion from string "" to 'Double' is not valid Here is my code:
Public Sub btnUpload_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpload.Click
'Connect to the Excel spreadsheet
Dim xConnStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & txtFileName.Text & ";" & _
using a data reader to read an Excel spreadsheet and want to update a SQL Express table
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Mar 3, 2010
I have to do an application using VB.Net .The application must be able to capture values from ms word data table and map them to ms excel sheet. For your information, i have over 6000 files ms word document, each of them contains 4 data tables using the same format .Then i have this code for read from data table 1 in document 1:
Dim
wb As
Excel.Workbook<br/>
[Code].....
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Nov 22, 2010
I have created I hope a sequence of steps that reads data from an excel spreadsheet into my VB app..specifically into a checkedlistbox. I would also like to do this in reverse IE Copy values from a checkedbox list back into a new worksheet?
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Jan 12, 2012
I am trying to export table data to an excel spreadsheet.It would be beneficial to have filtering pull-downs in the spreadsheet.I would be will to purchase any software tools to make this task easier. Otherwise are there some tutorials for accomplishing this?
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Nov 12, 2010
I have a flow document table with text in it. The text some timess just on one line , often on many lines, that means it could include a return and a tab spacing (all in the same cell).I want to put the data from the table to the clipboard in such a way that i
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Jun 16, 2010
When reading date fields, if the year is 1900 it subtracts 1 day from the value (1/1/1900 becomes 12/31/1899). Anyone else have this issue? If so, were you able to fix without coding for it?
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May 3, 2009
I have an Excel 2007 spreadsheet with data about my golf group, e.g., each row has name, phone number, handicap, etc.I want to write a VB 2008 application to read each row, extract the appropriate column data, and then print it out. I can't find any help on how to do it.
For example, I thought I'd have to go to the references and add the Microsoft Excel 12.0 object, then import Microsoft.office.interop Once done, my thought on a simple line of code to just display the A1 box would be:
dim appExcel as New Excel.Application
dim variable as string
variable = appExcel.range ("a1").value
message.box(variable)
Running that results in an error exception. So I'm clueless. Any hints or pointers on what to do, especially how to contruct a loop to read the contents of each column in each row, process and move to the next row.
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Jan 7, 2009
How to create a pivot table on an Excel spreadsheet via code. The reason I took so long is because I added a reference to the Excel Interop 12.0, rather than the Excel Interop 11.0. I assume that 12.0 is for Excel 2007, while 11.0 if for 2003 (or whatever I have). If that assumption is correct, this will cause me a bit of trouble, as all the people using the program are in the process of moving from 2003 to 2007, and I should have moved myself, but didn't for some reason unknown to me (I thought the upgrade was pushed out to my computer when I was at work, but I don't seem to have it anymore). However, my concern is that the objects needed to create a pivot table in the 12.0 library are significantly different from the objects needed to create a pivot table in the 11.0 library.
I don't believe I can late bind to solve this, because there will need to be different steps taken depending on the version, since the objects have different interfaces. It appears to pertain only to pivot tables (for what I'm doing), as I was able to create the workbook, the worksheets, and export all my data with some old code that I had, and all of that worked with both libraries, the difference is just with the pivot tables because the interfaces have changed, such that the methods needed for one library don't even exist in the other one (and the code crashes, but that's probably because I have the PIAs for 2003 installed, and not 2007).
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Sep 19, 2011
I am attempting to write the entire contents of an ADO.NET DataSet to an Excel 2007 spreadsheet and, while having partial success, I am unable to dump the contents of the DataSet into the .xlsx file. "Partial success" meaning that I can generate the spreadsheet(s) ok, but cannot get the DataAdapter.Update to work.
[Code]....
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Jun 6, 2009
What I was wondering is if I had a ListView1 with 1 row and 5 subitems, could I export that whole row into an Microsoft Office Excel spreadsheet, by defining in which Excell row/column I want to add each subitem into?
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Dec 24, 2009
So I need to create a windows form that is able to generate reports by querying a SQL Database or SQL Server. There is data in the databases that will be put into an excel file from whatever columns from a specific table I need. I need it to be a dynamic query that is probably hard coded into the application because I might need to write other queries at some point to generate different reports that need different columns.
What I need is somewhere to start or some code that I can look at because im not very familiar when it comes to vb.net/excel. I need code to get all that data from the database and put it neatly in an excel file and I would like to specify what columns in the excel file all the data goes under.
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Jan 28, 2011
I am trying to import data from an excel file but the spreadsheet name is causing problem. If I use 'Sheet1' as the name of the spreadsheet from which I want data, then it works fine but I want to change the name of the spreadsheet to the name which has spaces like 'PROJECT SHEET'. Please guide
Dim ExcelFile As String = "C:ProjectFile.xlsx"
Dim myDatabasePath as string = "C:ProjectsDatabase.mdb"
Dim excelConnectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + ExcelFile + ";Extended Properties=""Excel 12.0 Xml;HRD=NO"""
Dim excelConnection As New OleDbConnection(excelConnectionString)
excelConnection.Open()
[Code]...
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Jun 22, 2010
I am reading data from an excel spreadsheet. The column data which i am reading from my spreadsheet reads as follows:
integer
integer
integer
var char
integer
[Code]...
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Sep 10, 2009
I am trying to write data to an excel spreadsheet. Simply just todays date and the value of textbox1. I can successfully write it to excel, but how do I get it so each time the application runs it writes the data to the next available row?? I know there must be some loop involved but am having trouble with the coding..
this is what I have so far.
[code]
Imports Microsoft.Office.Interop
Imports System.IO
Imports Excel
[Code].....
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Oct 30, 2007
I have a simple Windows Service that reads from an Excel spreadsheet and imports the records into a SQL Server 2000 database table. Before it loads it checks if the file has been successfully imported before (using filename) and whether any of the records in the file have been imported before (using primary key). If these checks are ok I load the records into a datatable and then update the datatable to the database.
However, I need to do this in a transaction as I want to ignore the whole file if there is an error. The file goes to a discarded folder and the user gets an email with why the import failed. (This is likely to be because the store the record is for is not yet added to the database and the referential intergrity of the db fails). If there is no transaction the records before the failure record are imported. When the file is imported again (the store has been added to store table) the file is then rejected because duplicate records are already in the db.
Heres my code:
[CODE]...
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Aug 16, 2010
I have the first form and create 5 checkboxes which are connected to my db. Whichever checkbox is checked and the value will be inserted into the db (value: 1; data type: tinyint).And now, the second form will pull out the data base on the which checkbox is checked when the button is clicked. But for somehow i got stucked at the following code.
The first form:
Dim nValue As Boolean
If chkbox5.Checked = True Then
nValue = 1
[code].....
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May 12, 2010
how to display the data in an excel spreadsheet in a DataGridView?
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Dec 6, 2009
I am writing a windows application that interacts with data stored in an Excel Spreadsheet. I merely want to change the text value of a cell that already has text written in it.
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Jun 19, 2012
I'm currently trying to import data from an Excel document to a list in Visual Basic 2010 Express. The Idea is to have the data easily modifiable by the users. I have looked quite a bit online and all of the examples seem to reference either an "Imports Microsoft.Office.Interop.Excel" or "Imports Excel". When I try to use the I get "(no correction suggestions)".
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Oct 8, 2010
I am new to VB.NET. How to import data from excel spread sheet into database (SQL Server Management Studio Express 2005) by clicking a button in windows form application using VB codes (visual studio 2010).
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Apr 21, 2009
I have an project which was written in VB6 and made use of the Spread3.0 component to display multiple large data from database in spreadsheet. My objective is to convert this project into a VB.NET current version which would not use the third party component but can possibly use a freeware that does similar if not all the functionality.
My question is, are there any freeware that is available in .NET for such spreadsheet-like manipulation of data programatically? I have come across dsoFramer but this only allows the display of the data in an IE frame. I would like to jus embed the content into my existing form.
Also this freeware must be able to handle formula and user-editing as well as multiple cell type such as combobox/checkbox etc.
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Sep 1, 2010
I have an project which was written in VB6 and made use of the Spread3.0 component todisplay multiple large data from database in spreadsheet. My objective is to convert this project into a VB.NET current version which would not use the third party component but can possibly use a freeware that does similar if not all the functionality
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May 17, 2011
I'm using an OleDbDataReader to loop through my imported excel file and it gets everything in the file except for the first row. How can I specify that I want to see this header row?
[Code]....
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May 25, 2007
I have a program that currently takes data and writes it to a MS Excel spreadsheet. (automatically opens the program, creates the cells, and fills them with data)
I would like to add an additional feature to my program that offers support for OpenOffice.org's 'Calc' spreadsheet program. (so users without MS Excel can use the application) So I am basically asking if anyone knows how to automate OpenOffice 'Calc' from VB.net. (I am using Visual Studio 2005)
I have searched on the OpenOffice forums but no one seems to know the vb.net code for this. So I was wondering if anyone here has done this, or would know how to do this.
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Nov 11, 2011
I have a VB.Net program that reads in a flat file, and then parses line by line, formatting the data into different spreadsheets in an excel workbook (each line can be any 10+ different record types so I parse and put in appropriate excel sheet).
For smaller sized flat files (under 10mb), the parser works great. However, I am trying this on a file that is over 120mb (400k+ lines). While running, I will get an OleDBException saying that the spreadsheet is full. Now I am pretty confident that Excel can handle a much larger data set than a flat file. So I assume this exception is not giving me the true story as to what is really occuring.
I open a connection, and then parse each line in the file, inserting each row into the excel file. I assumed it would be bad performance wise to open/close the connection between each insert. Could this be causing the issue? Any ideas what I need to do to handle such a large file? There are cases where the flat file can be over 500mb.
To actually do the insert into excel, I am just doing the following (I construct an sql query based on the type of row and values parsed):
Dim conn As New OleDbConnection()
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExportLocation.Text + "" + importFileName + "-PVF.xls;Extended Properties=""Excel 8.0;HDR=YES"""
[Code]....
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Mar 14, 2010
I am trying to use the eID SDK (for using the belgian ID-card) in VB. It's supported but I can't get it to work. I have never worked with sdk's before. I did manage to get it to work in c++ in console but I really need it in visual basic. Also the VB examples that come with the sdk are made in an older version of visual studio and when my version tries to convert them they don't work. I want to use the sdk to see when a card is inserted into the reader and to read out the data. (both i got to work in c++ console).
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Mar 18, 2010
I'm trying to read from two tables in mysql:
[Code]...
Or even other techniques on achieving the goal of reading data from two tables using data reader? This is a winform, not a web form
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Mar 23, 2005
I am trying to gather some information about exporting data contained in a datagrid to an excel spreadsheet. I am not using ASP. The number of rows and columns are not set(fixed). If someone was able to point me in the right direction or even better a quick example. I have search through previous threads and am unable to find any that relate to exporting from a datagrid on a windows form to an excel document.
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Apr 6, 2011
I am trying to fill a DataGridView box with data from an Excel2007 spreadsheet. My code below connects to Excel2007 workbook but then errors and gives this error
[Code]....
Where have I gone wrong and how can I fix this, as I want to show the data in the DataGridView and then move it from there into my SQLServer DB?
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Jun 23, 2011
How do I link data in an Excel spreadsheet to a chart object in Visual Basic 2010? Really basic here....I just want to draw a single simple line chart from a single column of data. Is it easier just to read the data into an array (which I can do) and somehow get it into the chart?
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