I need open excel sheets in an application write in VS2008 (VB.NET) and Windows 7 as OS. All seem work fine, but I don't see excel worksheet. I see Excel32 opened as process, but no window on my screen. The code I used id this:
[Code]...
I want to read data from excel sheets and write into tables in database visual basic 2010. I am usinq Oracle 9i for database.and my objective is that user should select excel file and if button is pressed then I want to extract data from excel sheet and store in a already created tables.
View 5 RepliesWhen working with Excel in this context, is there a way to get the Excel Application/Workbooks/Sheets events?
Imports System.Runtime.InteropServices
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Process.GetProcessesByName("Excel").Count <> 0 Then
[code]....
I am converting several VBA projects to Windows form applications. The only problem I have is that some of the functionality of Excel is essential to the application, such as R1C1 formulas. I do not want to instantiate the Excel application or access saved worksheets. All of the data is retrieved by querying Oracle databases. 2-Dimensional arrays are not an option because the columns contain differing datatypes, and DataGridViews are too slow to work with.
I thought simply dimming a Microsoft.Office.Interop.Excel.Worksheet object would be enough, but the program kept failing and upon inspecting the object's elements in debug mode, I found that every value says this:
{"Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.WorksheetClass' to interface type 'Microsoft.Office.Interop.Excel._Worksheet'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000208D8-0000-0000-C000-000000000046}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))."}
I cannot figure out the declarations to write to an excel file that is already open.
I open the excel file and make it visible with this:
Private Sub Button1_Click
Dim objExcel As New Excel.Application
Dim objWB As Excel.Workbook
[Code].....
How to write to Excel worksheets without open Excel Application.[code]...
View 4 RepliesI'm trying to make a program that will write and read excel docs in vs 2008 with these following editable items date, time, and results using text boxes and combo boxes but I can't figure out how to get the excel part to work in it. How do I add this in visual studio 2008? what component do I have to add to my program to veiw and edit excel spread sheets?
View 1 RepliesThis code to display data from DGV to Excel Sheet. it will display them in the first row of Excel . how can I make it Display them in the second row or third row? [code]
View 4 RepliesI need to implement reporting.. with Excel sheets and need a lot of heavy excel workings..So..I have two options.. C#.net or VB.net !!What would be more closer to EXCEL ?What would provide me more excel api's and more control?
View 2 RepliesAm trying to import Excel Sheets to SQL Server, how ever the same code is working well for MS Access, here is the code which i am using
Dim cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ImportWizard.openFD.FileName)
'cn.Open()
[Code]....
I am experienced VBA programmer and I want to expand into Visual Studio 2010 (Express version at the moment, bacause it's free). What I need is some code samples to get me started. Possibly showing all relevant aspects. Here goes:
A form has products as icons (in ListView?) - ordering is done by drag and drop onto a basket Products will have color and size - selection is done by two TabStrips or similar feature ( if TabStrip control is still available in ViStuEx2010)Database might be Excel sheets if possible, but other free options are OK (if Excel can cooperate with ViStuEx2010). How about XML residing on the Web? SkyDrive?
Menu and starter of the application might be from Excel too - but I'll be glad to learn newer ways - code needed for both options: when Excel is a starter and compiled ViStuEx app. is a starter.
I imagine that many people write order taking applications using drag and drop interface.
hiding gridlines in excel sheet using VB.NET.I need to hide gridlines while exporting to excel from VB.NET.
View 3 RepliesI wanna read all cells of all sheets/pages in my excel file and just show the text content of each cell. [code]
1. How can I read cells inside the While?
2. My select command only selects Sheet1, how can I select ALL sheets?
I wanna read all cells of all sheets/pages in my excel file and just show the text content of each cell.I have written my code but have 2 problems:
Dim ExcelConnection As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Excel.xls;Extended Properties=Excel 8.0;") ExcelConnection.Open() Dim MyCommands As New OleDbCommand("SELECT * FROM [Sheet1$]", ExcelConnection)
[code]....
1. How can I read cells inside the While?
2. My select command only selects Sheet1, how can I select ALL sheets?
I'm tryng to read an excel sheet that has more than 255 cell. I'm using the following code:
Dim MyConnection As System.Data.OleDb.OleDbConnection
Dim MyDataSet As New System.Data.DataSet
Dim connectionString As String = ConfigurationManager.ConnectionStrings("PCOConnectionString2").ConnectionString
[Code].....
this code throws me an error that indicates me that there are too many rows to read. I found, seaching through forums, that it can't be more that 255 cells on the sheet i'm reading.
How can i read this sheet that has over 500 cells?
I need to copy data using Vb.net if possible from one excel spreadworbook to another and place the data into the correct columns in the existing excel spreadsheet. The column titles of the spreadsheets match up, I have several templates I need to place data into and the order of the columns is different in each template so I need a way of searching for a column header in the template and then copying the data into that column.
View 1 RepliesWith my Tool we are scanning excel files and generating reports. My problem is some excel sheets are password protected and getting pup-up while scanning and it halts the Tool to run further.Could someone let me know the solution, how to overcome with this problem. I just need to skip the sheet and continue with scanning without any user intervention.
View 1 Replieshow to Export DataSet to Multiple Excel Sheets and download those file into a zip in C# asp.net?
View 2 RepliesI have to write a macro which should run a .BAT file and
should enter username and password. click on 'OK' button. click on other buttons available on the application.
how can i do all these things from excel VBA.
I am looking for the code to consolidate multiple .xls sheets from within multiple work books in a file all containing the same format of information. Each sheet needs to be coppied to a new sheet within a single work book.
Once in a single sheet I need to then copy data from a range of fields into one consolidated sheet.
Does somebody have experience in populating excel and word documents from .net application?
What is proposed way: jet, com, xml? Is there any preferred way from Microsoft side?
What would be pros and cons for all 3 approaches?
I am trying to make a VB application that can read and write at excel or at SQlite db.With the excel my application works fine, but when i tried to share my application 1 of my friends can open it and all the others no.So i want to try with the SQlite but i dont know what i need for to support the sqlite at my VB project.I am using VB 2010 but i can also i can use C#?
View 8 RepliesI want read data from excel file and it's done.but I've problem about excel that open from program. I cant edit or open that file from ms Office.sample:I have masterCode.xls in my local drive. with vb i open that file, read data and bind into gridview.it's work. after close program, i open masterCode.xls with ms Office, that file opened but it automatically closed.when i open vb and run program again, select the same file, read data but now its error ("File is used").
Protected Sub btnUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpload.Click
Dim objExcel As Excel.Application
Dim objWorkBook As Excel.Workbook
[code]....
I understand that I cannot use the System.Console to output information from a Windows Forms application because the standard input, output, and error streams are not run through the console in winforms apps. But I can't seem to find any documentation on where the standard input, output, and error streams are being directed to! Basically, I have a winforms app that accepts command line arguments and can be run in batch mode, however, I just want to direct some feedback to the user based on whatever method they're accessing the program. The app is used to redirect a client-server application from one server to another. In some instances, the user does it by hand (with a mouse), and other times they're doing it in batch mode (using SAS, command shell, VBScript, etc...). In those instances, I'd prefer NOT to use MessageBoxes because it will kill any processing they're doing.
View 6 RepliesBasically, i have to write a small application that just writes in certain cells of a set page of an excel sheet, the sheet will always be the same layout.
View 2 RepliesI'm writing a VB.NET WEB application and I'm fairly new at it. What I want to do is open Excel workbooks on the client workstation so the user can "Save As" or print or basically do whatever they want with it past that point. I've done this in a windows application using System.Diagnostics but all the information I've read so far doesn't seem to work. I can open .txt and .xls files using this approach:[code]but it opens in the browser, which is not what I want. Do I need to mix Javascript with the HTML and the VB code?
View 2 RepliesI would like to know how to write a code for an application to make use of windows login and password to loginto application (single sign-on).
View 1 RepliesMost of them are for things like this, where I am looping through the open windows in my application and then if I find a certain window I do something to that window:
For Each wnd As Window In Application.Current.Windows
If Found Then
Exit For[code]......
Is that the kind of thing I'm supposed to do to fix all of these type conversion issues or am I going about this the wrong way? Also in situations like that, should I be using DirectCast or CType?
Is there something wrong with my installation of VS 2008? I'm trying to write a command line tool that uses WebClient. I cant seem to use UrlEncode as a known method.
Here is my code:
Imports System.IO
Imports System.Net
Imports System.Console
[code]....
how can i add two excel sheets with numbers and the equal (similar)numbers to save once
View 1 Replies