how do i read excel file at VB.net & display the result in a label or something..e.g i know cell A2 is a string of text - e.g Hello this is the P/L for the month i want grab that and put in a label etc.
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I need to display them in their own label with the read in button[code]...
I need to add the contents (integers) of two textboxes and display the result in a label. I've been trying like this within a button click event:
Private
Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Text + TextBox2.Text = Label.Text
End Sub
But it doesn't compile, and I dont know why. I've used arithmetic operators before, but now I'm just confused.
I'm using VB08. I've populated a listbox with numbers and I want to add all those numbers together and display the result in a Label. I've heard about using parse but I don't understand exactly how it works.
This is the code that I have that i think should work.
Dim lblTotal As Decimal
Dim sum As Double
For Each decAdded As Decimal In Me.lstRunningTotal.Items
sum += Double.Parse(decAdded)
Next
lblTotal = FormatCurrency(sum)
When I run it, nothing happens. My "For Each" statement I'm not sure if it's doing what I think it's doing. I can't believe I spent 6 hours banging my head against the wall but I finally got it figured out.
This is my revised code:
Dim sum As Decimal
For Each decAdded As Decimal In Me.lstRunningTotal.Items
sum += Decimal.Parse(decAdded)
Next
lbl_Total.Text = sum
Just some suttle changes made the difference
I been google search for a while (a month at least). My problem before is how to read raw data from access. however, i find out that access not suitable for my project. I more interested in using Excel, because for later analysis i would came out with graph using excel rather than using access. Since, i been develop a GUI Program for Battery Cyclic Test. The part for Cyclic Test and DAQ Interfacing is done already.
My weakness is not been able to understand/know how to read raw data for particular column, and display it into textbox. In many out there forums or discussion, they explain about this kind of database by using class in VB. But, i would like to implement excel data manipulation in VB-Window Form Application.[code]...
I am uploading an excel file to my app and want to read it. Do I need to have excel loaded to read this?I am getting an error of Object reference not set to an instance of an object.
Public Function GetExcelData(ByVal ExcelFilePath As String) As DataTable
Try
Dim OledbConnectionString As String = String.Empty
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I tried to read excel file using the method i found here [URL] But i get an error on ADODB.Connection saying "Type 'ADODB.Connection' is not defined" in the following code:
Code:
Private Function GetExcelConnection(ByVal Path As String, _
Optional ByVal Headers As Boolean = True) As Connection
Dim strConn As String
[Code]....
Its was used in VB6... do i need to do something special in Visual Studio 2010?
I have a project that has a need to display a Excel file in second window, but because other controls are needed, simply launching excel is not sufficient. Right now I do not know if the target machines have excel installed but I know with certainty that if they do it would be 2010, is there any method or library that allows you frame your own form around an excel window?
View 1 RepliesI have a label that is supposed to display a word for 5 seconds and then move down the list in a text file and display the next word.I'm oddly able to make it work in random mode, but not going down the list in order.. random would be ok if used words didn't come up again.
Code:
Dim DurHold As String = My.Computer.FileSystem.ReadAllText(Application.StartupPath & "FlashWords.txt")
Dim DurDelimiters() As String = {vbNewLine}
Dim DurTextLines() As String = DurHold.Split(DurDelimiters, StringSplitOptions.RemoveEmptyEntries)
[code].....
Why the attached code will find only the first line from the text file.
View 6 RepliesI am trying to make a script to spit command lines to a bat file to compress a bunch of files singly and then delete the original ones. I am sure that is easy to most of you, but I living a ____ trying to do this. A have a file list like this one belo, which was created with a command -- Dir /b /s /a-D N: > filelist.txt
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read lines in a file, split the lines and spit the result to another file
View 2 RepliesI want to read a text file and write the lines on different labels. Is it possible to generate labels?
I tried with four labels with label1, label2, label3, label4 names but I don't know how to create a loop to read every line of the file and write it in every different label. First line in first label, second line in second label etc.[code]...
I have excel 2007 installed on my laptop. I have vb.net 2010. I have tried a dozen different pieces of same code and I cannot read from an excel file...
Imports Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Form1_Load( _
ByVal sender As System.Object, _
ByVal e As System.EventArgs) _
Handles MyBase.Load
[Code] .....
Warning1Namespace or type specified in the Imports 'Microsoft.Office.Interop.Excel' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.C:UsersksimonsAppDataLocalTemporary ProjectsWindowsApplication3Form1.vb19WindowsApplication3
I am trying to read from an excel file. so far this is what i have:
Public Class testclass
Private wrkbk As Excel.Workbook
Private sht As Excel.Sheets
[code]....
The debugger gets to the "sht = wrkbk.worksheets(1)" line then says its has error: Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND))
I have a program that I wrote that uses a system generated excel file from a remote system.
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The issue I'm having is when I query the system generated excel file, it is not returning the last row. If I open the file in Excel and then save it, It returns all the rows. Since Windows 2008 64bit does not allow control via Excel to the file, I have to query the file via Jet provider or Odbc provider. I have tried using the Jet provider and the odbc provider.How do I get all the return all the rows with the system generation file?
I need to write VB program to open and read text file, store each field (separated by comma) into an array. In the first array, it's an excel file and I need to execute it, and once opened in excel, there is a macro program inside and i need also to exceute using VB.
sample content of textfile:
C:principalsinventory.xls, MacroInventoryReport, 1, 3:00AM
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C:principalsinventory.xls, MacroNearExpiringReport, 1, 4:00AM
I finished a course on VB in school. Now, I know how to read in a file, but I'm only used to plain text files. The file type I wish to use is called .pkm. It is a pokemon file type (yes, pokemon, don't make judge). Anyways, it's basically a file full of hex values that the game reads to display a pokemon. A friend of mine made a program that displays the hex from this file. He used Delphi so I'm not really sure about it in VB.
View 5 RepliesI have an excel file which is auto generated by third party software..and its readonly file and its data constantly keep changing online. Now I want to use or read that data in my vb.net application whenever its changes take place in excel file automatically.
View 1 RepliesThe first thing to do is to browse the excel file in my vb.net program then read the content of excel file and display the value of excel content in listview.
View 2 RepliesI have always used Excel.interop before but I thought oledb would be simpler because, for this application, I only have to read the data which it can't seem to do. It accesses the file alright because I can't open the file while I am at a breakpoint. It attempts to read the file because oExcelReader.fieldcount = 14 which is correct. oExcelReader.hasrows = true which is not correct. The line where I use getstring(1) errors out and says there is no data for this row/column.
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I need to read a .txt file and then put that into fields in an excel spreadsheet. for example i get print spool files that have invoices on them i need to put the customer names into a column of customer names and their addresses into a column of addresses. here is what i wrote to read with:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim reader As New System.IO.StreamReader(TextBox1.Text)
[Code]....
I'm creating a program and it is paramount to its functionality that it can open->read->close a Microsoft Excel (.xlsx) file.Now, I've searched the forums with the keyword "Excel" and found a lot of stuff in many programming languages, none of which were any use to me.
I should pinpoint that I'm not that good at programming as university takes all my times, but every summer (like this one) i really enjoy tackling my problems via programming.[code]...
I want to read an excel file using VB.NET program. I know the logic below can do this. But I have a question. What if I don't know the name of the worksheet OR if the name of the worksheet is not SHEET1?
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I want to rewad values from an Excel file that is always open and updating. I was using standard code to open up Excel and read from it, which worked fine, but that opens a new instance of the sheet. I need to read from a sheet that's already open.
I'm using xlWorkBook = xlApp.Workbooks.Open("c:\example.xls") which opens a new instanc of example.xls.
If example.xls is already open, is there a way of reading from it?
Working in VB in VS 2008 I'm trying to read from an Excel file using Oledb. I have no problem with it when the file is not encrypted, but the client has set a password on the working copy.
I read elsewhere that it's not possible to read an encrypted Excel file this way, but I find that hard to believe.
I am trying to set a program that save information to a file(store number, state and name. Then once user put store number and click display it shows the founded result in each box. like state in statebox and name in name box. This is my code so far
for the display button
Private Sub displayButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles displayButton.Click
Dim file As String = ""
[Code].....
how to search xml file and display the result in list box.then export a xml file to excel in the search result
View 4 RepliesI 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] .....
I am trying to import and read data in from an Excel file that is being updated every half second by way of a DDE Link from RSLinx Gateway,which I think is a default setting, though that data only changes every few minutes. There are 5 rows and 8 columns of data that I am reading in.Each column is a different tester starting with the second row, Testers 1 through 7. The first column has titles that describe the data coming in from the DDE links.
Each column has 5 rows of data related to the tester.I know how to display the data which I will post my code for below, but as far as reading the data and determining whether or not the part was good or bad, based on a boolean value, I am stuck.I would also like to save the data into a different excel file after determining the status of the part so that we can look at past data.
Code display:
Imports System.IO
Imports System.Data.OleDb
Imports System.Drawing.Printing
[code]....
