Create file in memory

I want to create a report using an ExcelHelper class with ClosedXML. Now I save it in the TEMP folder, then open it via Process.Start(path). Yes, it is not the ideal solution but a workaround. I’d like to save it on a filestream (which I can), then execute Excel using the fs (which I cannot). I don’t want to use Interop.Excel, because that’s why I use ClosedXML.

[vbjay]

The other thing you can do is watch for the process to quit. https://msdn.microsoft.com/en-us/library/fb4aw7b8(v=vs.110).aspx

On Wed, Jan 25, 2017, 5:20 PM Jay Asbury [e-mail] wrote:

That is a dumb way to do that. You have a loop that is processing and creating an exception each time.

Your process should be

List<string> cleanup = new…

When you create excel report

Cleanup.add(path to excel file)

When you close window.

List<string> tmp = new… foreach (string f in cleanup) { Try { //Delete file // Add f to tmp

} Catch…{}

Cleanup=cleanup.except(tmp)

On Wed, Jan 25, 2017, 12:28 PM the f. [e-mail] wrote:

I created a random-named Excel file with each action and open it using ‘Process.Start(path)’. Immediately after that, I created a while(!success) loop with a try - catch. In try I wrote File.Delete(path) and catch the IOException. So that when the user closed the Excel window, it deletes the file from temp. This is not the best way because it needs file write, read and delete actions, which requires so many system calls. This is the bottleneck of the process. That’s why I want to send the filestream into Excel through ClosedXML.

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[vbjay]

That too. I was more focused on the fact he was looping through and waiting for a non exception to quit the loop.

On Thu, Jan 26, 2017, 11:09 AM Francois Botha [e-mail] wrote:

There’s nothing wrong with using Interop to check whether the file is currently open in Excel.

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