Read Values From Excel Cells
Apr 28, 2009[code]i need to read data from specific cells and assign them to other cells.
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Read An Excel File - Loop Through Cells To Get Values?
Jul 25, 2008I'm using VB.Net's Excel component to read Excel file, but the performance is totally slow, since it has to loop through cells to get values. Reading a file containing one sheet with 1162 rows and 105 columns (which is small size compared to my general requirement) already costs more than 5 minutes.1. I want to ask if any of you have suggestion on reading such an Excel file with better performance, except OleDB, cuz most compies here have vesion problem?2. Is it normal that it tooks a long time for Excel component to read Excel file, or is it that I implement the code in a wrong way?
View 7 RepliesRead / Edit Excel Cells Into Textboxes?
Dec 20, 2009I need to be able to take numbers from multiple textboxes and input them into certain cells in Excel. Also need to do the opposite (Read numbers from Excel and put them into textboxes.)
View 2 RepliesRead All Cells / In All Sheets Of An Excel File
Jan 22, 2009I 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?
Read All Cells From Row2 From Excel Worksheet1?
Apr 27, 2010Need to get code to read all cells from row2 from excel worksheet1 and move into 2 dimensional array (rownum, colnum). I looked at forum for hours and its SOOO more complex that I need that I'm sure my confidence as a vbs person thinking this .net vba is simple
View 3 RepliesRead All Cells In All Sheets Of An Excel File?
Jan 22, 2009I 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$]", ExcelConnection)
[code]....
1. How can I read cells inside the While?
2. My select command only selects Sheet1, how can I select ALL sheets?
User Can Choose Excel Cells To Read
Oct 5, 2009I want the people using my program to choose their own cell to read. I will have 2 textboxes (txtRow and txtColumn). They will have to click "read" to read from excel (but I will not open MS excel) and the answer will show in a message box. This is what I have done..
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCheck.Click
Dim conn As New OleDbConnection("Data Source= D:LeeABC.xls ;Provider=Microsoft.ACE.OLEDB.12.0; Extended Properties=Excel 12.0;")
Dim da As New OleDbDataAdapter("Select * from [Sheet1$]", conn)
Dim dt As New DataTable
Dim Row1 As Single
Dim Column1 As Single
txtRow.Text = Row1
txtColumn.Text = Column1
da.Fill(dt)
MsgBox(mycell)
End Sub
Reading Values In Cells From Excel .csv File?
Sep 6, 2011I am new to VB.NET and I am trying to read a line of data from a .csv file. For some reason the line of code below is returning "System.__ComObject", why? I verified that the cell contains "4/8/2011 9:20".
Me.cv_wks.Cells(i, "G").ToString
VS 2010 Get Values From Certain Cells In Excel Document?
Aug 25, 2009I want to retrieve the value from example Cell C4 and dim it as String and then retrieve Cell D8 and dim as string etc.
View 2 RepliesPut Items That I Read In Inputboxes In Cells In An Excel Page?
Sep 17, 2011I programmed a tool to help making invoices.It is fully programmed in Visual basic.
Can i put the items that i read in in inputboxes in cells in an excel page?
Read Excel File Cells From Including Font Size?
Mar 18, 2012Is there a way to read excel file cells from vb.net including the font size, font color, etc
View 1 RepliesRead Excel Cells Using Visual Basic 2008 Express Edition
Mar 1, 2010I am trying to read off some cells from an Excel File. I can't figure it out. Here is my code:
Public
Class TOC
Dim ExcelObj As New Microsoft.Office.Interop.Excel.Application
[Code]....
After making WorkSheetObj I dont know what to do.. I am trying to dynamically change the Texts of Four buttons. The text values are to be to read off of Excel cells.
IDE :: How To Deal With Cells Excel Cells That Update Info Via The Web
Jul 5, 2009My main goal is to have an excel spreadsheet that automatically plots the overall success of my stock portfolio over time (% change over time). I've been able to incorporate stock data into my spreadsheet by linking it to the web, but the trouble is the spreadsheet will keep no history of what the previous stock values were, so I can't graph how things change over time. This sounds like it might be too complicated to be built in to excel, so I was wondering if anyone knew how to program this in Visual Basic. Maybe something like this.... If refresh then new cell plus new time stamp. Another possibility would be to have a whole bunch of cells that refresh only once but at longer and longer intervals, e.g.,
[Code]...
Cannot Read Numeric Values From Excel File
Sep 25, 2009I am trying to read data with a test routine from a fairly simple 3rd party Excel file. The file has three sheets and was created by Open Office 3.x as an 'Excel 97/2000/XP .xls' file. The later, still to be programmed, application must later run on machines with Windows XP Professional using the 2.0 .net framework and no Office package installed. The content of the file does not need to be modified by the later application. For some reason, numeric values are not read correctly. They "convert" to DBNull. I've searched around a bit but not found a 'simple' solution for solving this problem. Adding 'IMEX=1' or 'HDR=Yes;IMEX=1' to the connection string results in an error 'Installierbares ISAM nicht gefunden' (installable ISAM not found).
Based on various examples I've found, I've written the following test code:
Option Strict On
Option Explicit On
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code] .....
ComboBox - How To Read Cell Values From Excel
Jun 9, 2011I'm trying to populate a ComboBox with all column headers I have in my Excel -file...
Dim Polku = fdlg.FileName
Dim XL_App As New Excel.Application
Dim XL_WB As Excel.Workbook = XL_App.Workbooks.Open(Polku)
Dim XL_WS1 As Excel.Worksheet = XL_WB.Worksheets(1)
with ComboBox1
[Code] .....
All I get are 10 values that are:
System.__ComObject
Even though I should get in the dropdown list:
No:
Title
Dept.
Item
Spec.
Size.
Update Excel Values That Read From The Data Table In Ms Word?
Mar 3, 2010I 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].....
Read Cells From A Datagridview?
Dec 18, 2010Is there any way to retrieve data from certain cells of a Datagridview?
View 3 RepliesAdd 2 Cells Values In Datagridview?
Nov 13, 2008i would like to know the syntax for this.i wanna add the values of 2 cells and then i will display their total in textbox.i have been trying to use datagridview.rows.cells but i cant just use it to add to cells values.
View 2 RepliesExcel Cells May Contain A Number Ex '100'
Jul 29, 2010I have this code below looping through excel cells and drawing borders... the problem is that these excel cells may contain a number ex. "100", some have text like "hello" and some cells contain a zero the code is supposed to loop through until it finds a BLANK cell with nothing in it.however it stops at the first cell containing a 0. [code]
View 5 RepliesTrim Cells In Excel?
Nov 9, 2008I have a spreadsheet that I need to trim 3 columns. I have scoured the net but can't find anything that I've been able to use to trim each cell in columns A, H and I. I am using Excel 2003 and VS2005.
View 1 RepliesEdit The Values In The Cells Of Column(1) Ie Qty?
Nov 11, 2010Dim cmd As New SqlCommand(SQLSTR, conn)
reader = cmd.ExecuteReader()
Dim myDataTable As New DataTable
[code]....
i hve the follwoing code by which i bind the data to the grid the grid has 4 columns PRODUCTNAME, QTY,RATE, AMOUNT the user shld be able to edit the data in the column qty for as many rows it has but i m not able to edit this column how do i edit the values in the cells of column(1) ie qty?
ASP.NET Export To Excel - Lock Cells?
May 4, 2011I'd like to export a table I have on my webpage to an Excel file and lock some cells in the new file. Here is my current code:
Protected Sub btnExportToExcel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExportToExcel.Click
Response.Clear()
[Code].....
This code works in generating the Excel file. I've searched for an was unable to find much for a solution to lock cells in the new file.
Comparing Cells In Two Excel Spreadsheets?
Jan 24, 2011I am trying to write code that will compare the information in all row(one column) in the two spreadsheets and if they are not the same update another column on the row with a difference with Updated. but i am getting this error
countExcel = xlsSheet.UsedRange.Count
first_index = 1
last_index = countExcel
[code]....
Copy Cells From Excel To Outlook - VB6?
Jun 21, 2011I'm trying to copy cells from Excel to a new mail message in Outlook. Excel and Outlook both open fine but it doesn't copy.
Im using the following code:
Dim content = xlWorkSheet.Range("A1:C21").Copy()
Dim oApp As Outlook._Application
oApp = New Outlook.Application()
[Code]....
This does not copy the cells. It simply displays an email with a body that says "true".
I am using the excel sheet to do other things which work fine, so the excel code works. Just having trouble copying the cells.
Disable Excel Format Cells?
Jul 13, 2011I has some vb.net code to export some data into Excel format. I had set one of the column to date format. But I want to avoid user from changing the format because they can easily right click the Excel cells, and choose Format Cells. How can I disable this option in Excel via vb.net code so that user will always follow my format?
worksheet.Cells(intCnt, 19).NumberFormat = "dd/MM/yyyy;@"
worksheet.Cells(intCnt, 19).Style.Locked = True
I use the above code to locked it but seems to be not working.
Exporting Data To Excel Cells?
Feb 18, 2011How can I update an existing excel file? I want to change certain values already present in the excel file and I am using
Dim excelConnectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:Test.xlsx;Extended Properties=""Excel 12.0 Xml;HRD=No"""
Dim excelConnection As New OleDbConnection(excelConnectionString)
[Code]....
Formatting Excel Worksheet Cells?
Jan 26, 2011suppose I have an excel worksheet, I want to paint the particular cells with gray color then save it as a new file.
View 3 RepliesGetting The Text Value Of Cells In An Excel (*.xls) File?
Nov 6, 2009I'm trying to write an import function for getting data out of an excel file. How I currently do it is as follows:
Private Sub ReadExcel(ByVal childform As PhoneDiag.frmData, ByVal FileName As String)
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook[code]....
From what I can gather, it more than likely comes down to this line:
Dim Obj = CType(therange.Cells(rCnt, cCnt), Excel.Range)
All I need is the text from the cells, not to create an object for each cell (and then not send them to garbage collection).Is there an easier way of just getting the text? Ideally, if I can get a method for getting the text values of the cell, I'd like to get the multiple rowArray()'s added to a master array and update the program's values later.
EDIT:I also realize that I have two options if I were to create a master array, say mArr, to hold all the data.Would it be better performance-wise to have mArr to be large and the sub arrays small, or mArr to be small and the sub arrays to hold more of the information?I ask because the files that will be imported will have more rows than columns, so I was wondering if there was any "set" way of doing it.
How To Make Bold Cells In Excel Through Vb
Dec 2, 2010vb.net
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
[code].....
Merge Excel Cells Via .NET Without Asking When Every Cell Has A Value?
Aug 17, 2011I have a VB.NET website and I am organizing some data in excel file. I need to merge cells which have same data in excel but everytime I try to this operation, program stops and shows this notification: I don't want to see it and I want program to continue without asking. Is it possible,
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