office-interop

So I have been adding a DateTime.Now.ToString("MM/DD/YYYY") to a List (along with a bunch of other data) and the later writing these lists to individual rows in an Excel workbook. This all works great (it's something I do regularly), except, the month. I have tried exporting it three times and each time I get a different month; the first time 56/26-17, the second 2/26/2017, and the third 14/26/2017.... Use this instead: DateTime.Now.ToString("MM/dd/yyyy") "MM" for month. "dd" for days. "yyyy" for year. "MM/DD/YYYY" is wrong format: Console.WriteLine(DateTime.Now.ToString("MM/DD/YYYY")) //

So I was trying to make an excel sheet aggregator. In my line of work we get people who send us a bunch of individual excel files that are all related each with only 1 sheet used. I was following to some degree this previous post's ideas . But upon doing so, some of the excel sheets I copied were coming up blank. Only certain ones. I have no idea why some are blank and others are fine. Here is the code I use to open and copy the excel files OpenFileDialog browse = new OpenFileDialog(); browse.Multiselect = true; DialogResult result = browse.ShowDialog(); if (result == DialogResult.OK) try /

Summary This question is somehow the follow-up to this question: How to implement column self-naming from its index? Having tested the code provided in this above-linked question's answers, I finally encountered a serious performance issue. Performance issue The performance issue occurs upon a Sheet initialization, that is, when I initialize the Sheet's Cells. ''' <summary> ''' Initialize an instance of the Company.Project.Sheet class. ''' </summary> ''' <param name="nativeSheet">The native worksheet from which to initialize.</param> Friend Sub New(ByVal nativeSheet As Microsoft.Office.Interop

I want to open 1 or more Excel-workbooks programmatically. And when I open the workbook, you get a question: The workbook contains links to other data sources. And I don't want press " Don't update " How can you leave this messagebox? So the functionality will not interrupted anymore. Updating is not needed. try placing in the workbook Open event handler: Application.AskToUpdateLinks = False I don't think you can get around the dialogs with the excel interop libraries (the warnings are there for a reason). The way I've always done this in the past is to treat the Excel file like it's a

I am trying to print a table inside an e-mail using plain text. I have the following code: string body = string.Format("{0,-30}{1,-30}{2,-50}{3,-40}", "Col1", "Col2", "Col2", “Col4”); body += string.Format("{0,-30}{1,-30}{2,-50}{3,-40}", value1, value2, value3, value4); Microsoft.Office.Interop.Outlook.ApplicationClass myOutlookApplication = null; myOutlookApplication = new Microsoft.Office.Interop.Outlook.ApplicationClass(); Microsoft.Office.Interop.Outlook.MailItem myNewMail = (Microsoft.Office.Interop.Outlook.MailItem)myOutlookApplication.CreateItem( Microsoft.Office.Interop.Outlook

I have opened Excel file in my C# WinForm Application adding reference to Microsoft.Office.Interop.Excel.dll and using DSO FRAMER CONTROL. But i want to open my excel file with read only protection.I have successfully done this for WORD Application like this Word.Document wordDoc = (Word.Document)axFramerControl1.ActiveDocument; Word.Application wordApp = wordDoc.Application; wordDoc.Protect(Word.WdProtectionType.wdAllowOnlyReading); In the same i want to do this work for Excel.But i couldn't able to protect Excel file on that way. string path = "C:\\test-wb.xlsx"; axFramerControl1.Open(path,