I need some code which checks if excel is open or not, if excel is not open then opens it (that code is fine)
else try to write some content/cellvalues to the already opened excel, basically I am creating windows application, which has been scheduled to run numbers of time in a day, when ever application executed, the application has something to write to the excel. one more thing is i don't want excel to save and close every time i execute the application, Its like transparent processing of EXCEL writing, a file is already opened, just write some content, and after writing it exit the application without either closing or saving the excel
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
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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.
I am trying to write text to a file in this path "C:\Test\test.txt" and when I want to save image filenames to this path I need to check if the file is opened and if it is opened I need to close the ".txt" file and write the text to the text file.[code]...
I'm exporting my Dataset to an excel file, and I want to make sure I keep any file errors under control. One in particular that I'm concerned about is accessing a file that's already open. A general IOException occurs that says: "The process cannot access the file 'C:Reports eport300.csv' because it is being used by another process."
Here is the line in which the error will occur: Dim output As New IO.StreamWriter(path, False, UnicodeEncoding.Default)
I guess I could just throw a try catch around it, but what if an IOException happens that isnt related to this particular incident? Is there a way I can check to see if the file is already open before allowing this code to run? Especially when I'm using excel.
Dim i As Integer Dim objExcel As New Excel.Application Dim objWorkbook As Excel.Workbook objExcel.Workbooks.Add()
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At the end of this routine, eventhough the data was correctly saved to my Data.xlsx file, this routine also opened 15 EXCEL.EXE tasks in task manager.I thought that I had cleaned up before quitting. By the way, whether I write to 1 or 5 or 10 cells in Data.xlsx, 15 EXCEL.EXE tasks would be opened regardless.Is there a way to (easily and) completely close all EXCEL.EXE in task manager before leaving my application?
The problem I have is that I have a 3rd party add-in working in excel to convert certain info into a barcode.
When I open excel normally, the add in works without a problem, but when I open it through excel it just doesnt work until I manually go into the add-in option, disable the add-in and the reenable it.
My program opens 4 excel spreadsheets updating info. I update one at a time and then close it before opening the next one.I want to add code to my program to test if the file is already open, before trying to open it. Occasionally someone will have one of the files opened and it causes a crash. If I test to ensure it is not open, then I can avoid this.
What I wanted to do is close all opened workbooks. This code does the work IF there is at least one or more opened workbooks. My problem is IF there is NO opened workbook at all; It goes around unendlessly in the WHILE Loop. How do I not process the closing IF there is no any opened workbook at all? (NOTE: I found this code from somewhere else.)
I will know how do I work with the opened excel instance, when I use multiple userforms. I have on my form1_load open a excel file. Then I observed that on my next userform, was unable to write to that file again. Project have no instance of APP.workbook.
I developing an application that downloads some reports from a external ASP web app. I use the control webbrowser to navigate through the pages, generates and download the reports. The URL are in an array ArrURL and I have 2 situacions:[code]
Error File: [2 14.20 34.8] X8.435 Y-1.070 211.030 Short +215.534
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From error file also i dont know how to get P value. If i used Index of ("P"). There are some other word also which contain P. Then code is not only taking the value i want from NodeList file but whole line.
how to read and write the content of text file to vb.net application. Now with the following code i can read the file. but the whole file appears in vb.net application itself. I want the application to read and write the content of file to textbox that is provided in the vb.net application. I don want the user see the file. My code to read the file is :[code...]
I using Microsof Visual Basic 2008 Express Edition. I need to create a form like: 2 buttons are open and save existing .xls file which each generation can choose a different.2 textbox that can be entered on the column and last button to when choose two columns, to find duplicates values and mark different color same values. Is it possible?
At the moment Excel file opens, but the comparison does not require the introduction of the columns
I was given a task to actually to develop a application where it will automate the process of extracting data values from excel files and add in into access table. Is there any online examples or any advices on how to go about developing this?
I have a range of data that I want to replace with new data.So, I want to clear the old data and replace it with new data.But the formulas in the old data are also required to work on new data.[code]...
I created this code to export from DGV to Excel and it worked with me. I tried to print the data from DGV to specific cells in worksheet but I don't know.
I already know the basic procedure of how to read specific cells of an .xls file using VB.NET but I can't figure out how to automatically get all the data from such a file.Basically, I'm obtaining the data like this:
Dim xlApp As Excel.Application Dim wb As Workbook Dim ws As Worksheet xlApp = New Excel.Application
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In this case, I know that there will be content in the first 10 rows of the columns A, B and C but what would I have to do if I had a huge document whose size and content might even change from time to time? I know that there is also an attribute ws.rows.count but this always returns a big value like 60000 even if only a few rows are occupied.So basically, I'm looking for a simple way to loop through all the used rows of an Excel file with the possibility of accessing each cell in that row.
I already exporting contents of my datagridview to excel and word but I need to format one of the column of my datagridview. That column is "Amount". In my datagridview, it displays like this "122234". I want to display all the value in that column in this format: "122,234.00". I already tried to format it to number("N") in my datagridview but when I exported it to excel and word, it shows no format.[code]
I have imported a sheet from Excel. It grabs the first row as the column names saves it in a dataset, and displays it in a grid view. here is my code to do so:
Try 'Dim MyConnection As System.Data.OleDb.OleDbConnection Dim DtSet As System.Data.DataSet Dim MyCommand As System.Data.OleDb.OleDbDataAdapter
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The gridview is editable, so when the user edits a cell I want to have a button so they can save the new values back to the excel sheet.
The code above cant be that dissimilar for writing from a dataset instead of reading to, but cant work it out.I want to keep the same Column headings.
