Fill A DataAdapter From An Excel.xls Spreadsheet?
May 7, 2009
There is no other workaround at this point, so here is what I am attempting to do:
1. Fill a DataAdapter from an Excel.xls spreadsheet.
2. TRUNCATE an existing SQLServer2005 db table that matches this excel spreadsheet.
3. UPDATE that SQL Table with the DataTable filled from the excel spreadsheet.
If there are anyother suggestions (OPENROWSET/DATASET is not possible for my situation, in or outside of a SProc),Here's the current dev point I am at --- no errors, but also the SQL table does not update.
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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
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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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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"""
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Jul 20, 2011
I am trying to add a parameter to a sqlDataAdapter. I have tried to use parameters.add() but the adapter is not a sqlCommand. Here is some of my code.
Private Sub convertToCSV(ByVal SqlQuery As String)
Dim Dt As New DataTable()
Dim SqlCon As New SqlConnection("Data Source=db;Initial Catalog=productionservicereminder;User Id=id;Password=pass;")
[Code]....
Basically I am trying to do something like this:
Ada.Parameters.Add(New SqlParameter("@pgid", pgid))
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Oct 5, 2009
I have a problem with access database in my vb project. I would like to fill the listbox with objects from my database. I've attached two images. In first image when i'm using command objDataAdapter.Fill(mydataset....) i can select table property(zaposlen). But in second image or in my second app i dont have an option to select table property in my dataset(there is nothing to select). If i select DataTableDataTable i get next error: DataTableDataTable' is a type in 'WindowsApplication1.baza_podatkovDataSet' and cannot be used as an expression.
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Mar 29, 2009
When I use the dataAdapter.fill(ds,tableName), it reports an error: "Failed to enable constraints."Yes, I changed the selectcommand.I know if I modified the selectcommand, and if it will take diffrent columns result, this error will be reported.
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Jul 21, 2009
i try to use this yesterday it work fine..now, it will process too slow.. when fill the dataadapter into the dataset..here is the code it gives 20 menutes still no result.. "no error, no comment. it's like standby
Dim conn1 As MySqlConnection = New MySqlConnection("server=pc1;user id=user;Password=12345;persist security info=True;database=mytsmobile")
conn1.Open()
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Nov 9, 2010
[code]Where I add my parameter, I am trying to have it pull records that contain the text that is in the jpDescTextBox instead of being exactly equal to it. I have tried using wildcards such as * and %.
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Apr 20, 2012
I there a way to set up my DataTable so a field (or all fields can allow nulls if you can't set just 1 field) so oIDbDataAdapter.Fill won't leave out DataRows where a field contains a null value?
Dim oSqlCommand As SqlClient.SqlCommand
Dim oIDbDataAdapter As System.Data.IDbDataAdapter
oSqlCommand = New System.Data.SqlClient.SqlCommand( _
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Jan 9, 2011
VB2010, MySql I have a dataview generated from a datatable using a rowfilter.I have event handlers listening to the dataview.listchanged event. To keep the datatable (in memory) in sync with the mysql database (on a remote server), i issue datadapter.fill commands every now and then, the objective being that only the changed rows in the datatable (as a result of the fill) would generate a listchanged event on the dataview.To my surprise the dataview_listchanged event fires after refresh by the dataadapter.fill method, however the ListChangedType it gives is: ListChangedType = reset. I would have expected a ListChangedType.ItemChanged for every changed datarow.Since the dataview is used to populate a large storage yard, i am now forced to repopulate the whole storage yard, which is a time consuming business.Is there a way to only generate DataView.ListChanged events for rows in the datatable that are actually changed by the datadapter.fill method?
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Mar 12, 2011
At the top of my code for the form I have the following statements (and some other unrelated ones to):
Dim LastDataRow As DataRow
Public Event RowChanged As DataRowChangeEventHandler
When my form loads I run the following line of code:
AddHandler dt.RowChanged, New DataRowChangeEventHandler(AddressOf Row_Changed)
After the form loads I have a FetchData button which connects to the database and brings the records into a datatable object. During this fill operation my Row_Changed event fires (for every record I think) and tries to run DataAdapter.Update(DataTable) (pseudocode) which ultimately fails because I haven't yet created commands. The error I get in my Row_Changed procedure is:
Update requires a valid InsertCommand when passed DataRow collection with new rows.I hadn't even planned to use an InsertCommand at all since I will not be allowing users to insert records from this form. I do plan to allow them to delete or modify existing records, but not insert new ones.run my AddHandler statement after filling the datatable. However, I'm trying to figure out how to rewrite my code so that I can refresh the datatable without closing out the form/application and having to open it up again. I think that's a problem for a separate discussion.
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Sep 25, 2010
I have a spreadsheet control on a windows form that I would like to populate with data from an existing worksheet (myworkbook.xls, sheet1). The best solution for me would to be to actually open the workbook on my form (not sure that is possible?), the next best solution would be to fill the spreadsheet control.
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Jan 10, 2012
I'm trying to export a datagridview to Excel and open the Excel spreadsheet (not SAVE the worksheet).
Public Sub ExcelRpt(ByVal DgvName As GridView, ByVal url As String)
Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlWorkSheet As Microsoft.Office.Interop.Excel.Worksheet
[code]....
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Aug 19, 2010
After running the following sub (VS debugger), I try to detach the database in SSMS, but it shows the connection open still and won't let me detach. If I close program in debugger, the database shows no connections. I check the dataadapter's connection in the finally block and is shows closed. What gives
Private Function ClientMasterDBFiles(ByVal MasterClientDBConnection As String, ByVal DBName As String) As DataTable
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Jan 11, 2012
I have some code that fills my datagridview (VulDgv) I also have some code that exports the datatable to an excelfile (DatatableToExcel). All works pretty good. However...when I export to an existing file I get 2 warnings, first is the "file exists overwrite" warning from the savefiledialog. The second message is the "excelfile exists" from excel itselve. (is it possible to hide this message?) My real problem is after the 2 messages the code APPENDS the data to the excel file instead of overwriting it.
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Jan 22, 2009
if any of you have called up excel spreadsheet data within your VB.net app. Is it at all possible instead of calling up access and the like?
And just before some overzealous person puts "we will not do your work for you blah blah blah......" Im not asking you to write it for me, im just asking if its possible, has anyone succeeded in doing so?
Id rather not use VBA script if possible, Id like to create my own app and use a spreadsheet that has all my workings on already - sorry if its a bit noobie to ask such a daft question but one of my friends is going to be opening a restaurant soon and asked me if i could do a little prog for him using his excel stuff
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Jul 3, 2012
am doing a application on excel spreadsheet converting to .exe
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Mar 31, 2011
I am having trouble creating an excel spreadsheet and then importing data from a textbox file with heading 1 going in a1, heading2 going in a2 and the data being entered in in b1 and b2 etc.
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Feb 15, 2012
I am trying to write a program that will display an excel spreadsheet in Visual Basic. My goal is for the program to display this Work Order Form I have designed in excel and to modify user, date and auto assign a work order number. After that is done I would like to print the excel form. So I guess my questions are:
- How can I display an excel spreadsheet in win forms
- How can I print the spread sheet after it is modified
- Is there a better way I should be doing this
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Jul 19, 2010
ive got excel spreadsheets that i would like to open in my windows forms as part of my program,ive put an Axspreadsheet on my page but how do i open up an excel file into it. Looking at opening the whole of the data so all the worksheets and workbooks and what not. User only need to "look at it/browse it" so to speak.elimintate a problem wit hreading a writing issue to excel ive got, using different pcs and get and im not allowed to set up a "trusted area", so everytime i open the excel file itself i get an error saying cant use the "characters ! %&*<>
" and is your filename less than 218 characters.ive finished coding for today, so will be on tomorrow.
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Apr 15, 2012
Ive been trying to figure out how to find the next empty row in an excel spreadsheet.My project is a VB project, written in Visual Studio 2010 Express.What i need to do is open the spreadsheet (that is predefined) and find the next available row. (in column A through to S)My code so far for this little part of my prject is:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlworksheet As Excel.Worksheet
[code]....
The same as "Selection". I get a blue line for "ActiveCell" Doesn't work.
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Oct 19, 2009
In my latest project, I'm iterating through an Excel Spreadsheet and importing the information from it into a DataSet row for row. Based on certain conditions (namely, the text in a certain column on the spreadsheet). For certain conditions, the app is to write the row into a new spreadsheet and email that spreadsheet as an attachment to a pre-defined email address.
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May 7, 2010
I am taking a pre-existing excel spreadsheet and inserting a blank row at the top. This part works, the part I am having problem is the fact that based on the code I have, I have to open the spreadsheet so when you execute the code the spreadsheet opens. Then when done, close it. When I try to close it wants me to save the document, even if I call the save method. This whole process should happen behind the scenes so I really don't want the spreadsheet opening.
See code below.
moApp.Visible = True
oWB = moApp.Workbooks.Open("I: estcsv.xls")
oWB.Sheets("testcsv").Rows("1:1").Select()
moApp.Selection.insert(xl.XlDirection.xlDown)
oWB.Save()
oWB.Close()
'When call the close, it still asks me to save the spreadsheet even though I called oWB.Save above.
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May 28, 2012
I am exporting crystal reports information into an excel spreadsheet and now I am trying to open up excel so that the user can view the page but however I cannot SEE the excel file. in Task manager there is EXCEL.exe which shows that maybe excel opens up but the spreadsheet is not visible.
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Feb 11, 2011
I'm creating an application in VB 2008 that will act as an interface for user's to add information to an excel spreadsheet. I am trying to determine the best way to do this, since I have never actually done it before. It seems like it should be simple, but as I am reading about it, I feel like it is a little more complicated than I had originally thought. I don't need to create the spreadsheet, I just need to add to it using this form as an interface.
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Feb 24, 2011
I am creating a report and outputting the results to an excel file. Here is how it is suppose to work. I have a table called EMPID that has a list of employee id's. I loop through this table and for each EMPID, I run several queries. I would like to append the data that is returned to the spreadsheet so that the results for all EMPID's would be added to the spreadsheet. Right now, the way I have coded it, for each EMPID it overwrites the fields in the spreadsheet instead of adding/appending them to it.
Here is some code:
If EmpidDS.Tables("EMPID_Table").Rows.Count <> 0 Then
For Each dr As System.Data.DataRow In EmpidDS.Tables("EMPID_Table").Rows
'Set the variable EMPID to the current row EMPID
EMPID = dr.Item("EMPID")
'Check that table is not empty
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Mar 19, 2012
i have an Excel spreadsheet which I have exported to a Gridview. In my code the table name has to be declared i.e its the name of the worksheet. How can i export excel and select which table i want without hardcoding the table name. i have many worksheets and want to the user to select which table he wants from one workbook.
I am using vb and have a web form.
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Apr 20, 2009
Is it possible to deliver an Excel Spreadsheet via an Web Service. I believe not as ASP.NET web services seem only to deal in Serializable elements which the excel binary format isn't (I think). If the Excel is saved in XML format will this work?
I have a number of reports that will be emailed, but the request has been put into allow these reports to be pulled via Web Services.
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Jun 19, 2012
I am building a website to capture data. I have many spreadsheets that are used for data entry or capture. Now I want to mimic these complex spreadsheets on the web forms but I am unsure of the correct control to use.
Data entry must be allowed and live calculations also need to be made similar to formulas on normal excel spreadsheets. Later on the data must be captured into an SQL table.
What would be the best control to use or method to mimic that functionality, albeit that the spreadsheet component is no longer available in visual studio 2010. Is it a data grid?
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Sep 10, 2009
What is the best way to export a gridview into an Excel spreadsheet? This seems easy except that my Gridview doesn't have an export attribute.
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