Calling Class (When Include Excel Automation) From Button Object

Apr 7, 2011

I am messing around with some Excel Automation just to get my feet wet and want to call some specific cells in my spreadsheet just for testing. I have one form in the project including a button. My question is how do I tell the button where to navigate to the cell to be tested?

My code for my Excel class is as follows:
Public Class Waybill
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim oExcel As Object = CreateObject("Excel.Application")
Dim oBook As Object = oExcel.Workbooks.Open("C:\TesterXL.xls")
[Code] .....

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Office Automation :: Excel File - Set A Reference To The Microsoft Excel 12.0 Object Library

Oct 6, 2009

I'm trying to upgrade a VB6 app to VB 2008. I have read the article in the tutors corner about automating Excel from VB but I cannot get it to work. Heres what I have done:

1) set a reference to the Microsoft Excel 12.0 Object Library

2) Added "Imports Excel = Microsoft.Office.Interop.Excel" to the top of the module

3) in a routine I have added: Dim X As New Excel.Application Here's where I get an error: Error 75 'Application' is ambiguous in the namespace 'Microsoft.Office.Interop.Excel'.

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Office Automation :: Code Hangs When An Excel File Is Opened To A Excel Workbook Object?

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I use the following code snippet

Dim exlapp As New Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook_new As Microsoft.Office.Interop.Excel.Workbook
Dim strOriginal As String
strOriginal = Server.MapPath(Request.ApplicationPath & "/Attachments/") & "abc.xls"
xlWorkBook_new = exlapp.Workbooks.Open(strOriginal)

The code hangs in the last line. It works fine in the development environment. i deployed in windows server 2000 ,where I get this issue. the browser goes half way and throws the below exception after some time

[Code]...

I have set the identity impersonate to true in web config. This should be mostly an access rights issue.I have even provided access rights for the "everyone " user in the excel file and as well for the interop component. Please post ur valuable comments.

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Office Automation :: Method Not Found: Void Excel.Range.set_Value(System.Object,System.Object)

Mar 11, 2009

following error message:

Method not found: Void Excel.Range.set_Value(System.Object,System.Object)

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Office Automation :: Excel Object Library 10.0 Versus 11.0 Version?

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I have 2003 xls file which is saved on a web share point. File combines vbs functionalities, of which one is uploading data to this file (from another file on the same share point) by clicking command button.When I open file from my location it all functionalities are working without problems. My customer is running it from his location, he is also using Excel 2003, the moment he wants to upload the data he gets the bug.

Message: Method "Worksheets" of object "_Global" failed

I checked and it seems that in the references he has 10.0 object library and I have 11.0 What i can do to unify the coding so it is indifferent from Object Library version?I have read about late va early binding, I guess i'm using late binding I also check that i can adjust late binding buy standard codes.

Dim oExcel As Object
Dim oWorkbook As Object
Dim oWorksheet As Object

[code]....

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[Code]....

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Calling A Class From A Button Click

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Office Automation :: Automation Excel Without Install Excel

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I am developing an application using excel automation.The worst thing is the client's side doesn't have excel installed.What is the solution for this case?

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Office Automation :: Excel 2003 Automation With VB 2005 Express?

Apr 20, 2010

Ok basically what I need to do is the following:Read FirstExcelDoc (attached)For every row in that: Retrieve data from sql server db based on info in the Orange columns of FirstExcelDoc Let's say I retrieved data elements A, B, C, D, and E from sql server. Then I need to enter those same data elements A, B, and C in another excel spreadsheet (which has formulas etc) After inputing A, B, and C in that spreadsheet, read a couple of calculated fields and compare those results to data elements D and E retrieved originally from SQL Server DB. Finally, output the results in the Blue columns of the FirstExcelDoc spreadsheet for that row.Loop through and do the same thing for row 2 of the FirstExcelDoc and keep on until you see "END TEST" in the FirstExcelDoc.

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Office Automation :: Orphan Excel Process Started Via Automation

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I have been pulling my hair out trying to fix this.

[Code]....

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This may run fine for a couple days but sooner or later the process starts crashing, usually with this error: RPC_E_SERVERFAULT.

My question is, Is it expected that continually opening/closing/refreshing workbooks will inevitably cause the Excel object to crash at some point.

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I'm having an issue where my excel.exe process doesn't close until I close my .net application. I'd like to avoid using Process.Kill() if at all possible.

Code:

Private Sub WriteRowsToXls(ByVal rows As DataRowCollection, ByVal xlsPath As String, ByVal showStatus As Boolean, Optional ByVal AddTotals As Boolean = True)
Dim xlsApp As New Microsoft.Office.Interop.Excel.Application

[CODE]............

This method references a couple of other methods I use for repeated formatting tasks, I'll include those methods below. (I added the FinalReleaseComObject into the other methods after reading Mike's thread but the issue persists)

Code:
Private Sub SetRangeValidation(ByVal rng As Range)
With rng.Validation
.Delete()

[CODE]..............

Method SetRangeAllBorders does about the same as these other methods but my post is too long to add it. The only other things not shown in these code snippets are a few string variable that are defined in the class, studentWS, studentsWSPW, paymentsWS and paymentsWSPW My App creates an instance of the class, loads some data, runs the method above, and then sets the class to nothing. I'm using .NET 3.5 automating Excel 10

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[Code]...

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Here is my code:

Code:
Imports System.Data
Imports System.IO
Imports Microsoft.Office.Interop

[CODE]...

Now I think the problem comes from the end of the loop, where I try to close the export file and the new worksheet it creates:

Code:
'close excel and release com objects
System.Runtime.InteropServices.Marshal.ReleaseComObject(exportsheet)
exportsheet = Nothing
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Public Class AddressSet
Private addressValue As String
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[code]....

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Example:

Two files - TestClass.vb, myForm.vb

TestClass.vb looks as follows:

Imports System.Threading
Public Class TestClass
Private myClassThread As New Thread(AddressOf StartMyClassThread)

[code]....

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Dim DB As New DBConn
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[Code].....

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In the central object I have a function

Public
Function ObjectHandler(ByVal ObjectType
As
Integer,

[code]....

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Code example:

Public Class derivedObj
Inherits baseObj
Private _newProperty1 As String[code].......

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Code example:

' property names are in the string array fieldNames

'baseObjQuery is an ienumerable of baseObj

'derivedObjList is a list of derivedObj[code].....

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baseClassName.Course(1)

etc...but I know that's NOT how it's done...but how IS it done?

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