How do I read/write Excel cell data to textbox & visaversa

Hi,

I'm converting older VBA code to VB. I'm using Visual Studio or VB 2010 but am new to this "oop" approach and not a seasoned programmer.

Scenario:

1. Open new Excel worksheet (see below - will this work?)

Public Class frmMain

Prvate Sub frmMain_Load(ByVal sender As System.Object, ByVal e As -System.EventArgs) Handles MyBase.Load
Dim objExcel As New Excel.Application
objExcel.Visible = True

Object.Workbooks.Add()

2. Load text found in cell Range("A1") into form's Textbox1

3. Enable change/edit in Textbox1 to change A1 cell value

Can someone show me a basic example? Assume only one textbox and one cell for above scenario to keep it simple to begin.

Any quick help here would be much appreciated.

Thank you.

Well since you're copying data from the worksheet, I'm guessing its not a "new" worksheet. But you have to declare the application, workbook, and worksheet that you are trying to get data from

Code:

---

Dim excelApp As New Microsoft.Office.Interop.Excel.Application
Dim excelBook As Microsoft.Office.Interop.Excel.Workbook
Dim excelSheet As Microsoft.Office.Interop.Excel.Worksheet
excelBook = excelApp.Workbooks.Open("path")
excelSheet = excelBook.Worksheets(1)

'Now that you have your worksheet you can do your data manipulation
Textbox1.Text = excelSheet.Range("A1").Text

'or to edit
excelSheet.Range("A1").Text = Textbox1.Text

excelBook.Close
excelApp.Close

---

Thank you.

I actually would like application to add a new workbook to begin, then save, then evoke and edit the same textbox again.

I did a quick test on what you provided earlier that gave me more insight and any more help for above "add and save" would be appreciated again.

Well if you want to create a new Workbook, you'd just declare it as a new workbook, add a worksheet, and edit that sheet. To save you'd pass the SaveChanges parameter when you close the workbook

Code:

---

excelBook2 = new Excel.Workbook
excelsheet = excelBook2.Worksheets(1)
'I think it should already have 3 worksheets, thats why I set the worksheet to the first worksheet in the new workbook.

'Add your changes
Textbox1.Text = excelSheet.Range("A1").Text

excelBook2.Close(SaveChanges:=True)

---

Depending on what you're doing you can loop it, or still edit the same textbox too

Error 1 'Application' is ambiguous in the namespace 'Microsoft.Office.Interop.Excel'.

getting erro while declearing
Dim excelApp As New Microsoft.Office.Interop.Excel.Application