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Read from CSV recently downloaded

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Posted on by mmuscatell

Hello,

I am using power automate desktop, I have created a flow where I go to a website download information as a .csv. The name of this file changes each time it is downloaded so use the Get files in folder that looks for .csv and sorted by creation time. This produces the variable Files. The next step is Read from CSV file. I am telling the system to Load CSV table from File and give it the Files variable as I do not know what the name of the file will be each time it is downloaded. This is causing an error Parameter 'File path': Argument 'File path' must be 'File'. First off I have no idea what this error is trying to tell me and second is there another step I can add to tell it to use the most recently downloaded csv? I just don't know enough about this program and am looking to get started with my first flow. Any help would be greatly appreciated. Thank you kindly. Mike

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Zave 88 on at

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Hello,
The variable %Files% is a list of files that will contain all the files retrieved from the "Get files in folder" action and not a single file. To access a specific item of that list (a file) you would need to either loop through the list, using the "For each" action, or you can specify which item of the list you want using an index.
For example, if you want the 1st item of the %Files% list, it would be %Files[0]%. This is a bit risky though because you can't be sure that the %Files% variable will always have at least one item.
As for how to get the most recently downloaded file, the "Get files in folder" action has an advanced section for sorting:

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MichaelAnnis 5,727 Moderator on at

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Files is a list of Files. You cannot read from a list of files, you have to specify which file. So, if you want the first file (assuming you ordered in last modified descending), you want %Files[0]% which is the first file in the list, %Files[1]% is the second, and so on.

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MichaelAnnis 5,727 Moderator on at

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beat me by 30 seconds @Zave ...haha

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mmuscatell 18 on at

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I looks like I need to set up an index. How do I go about doing this? I tried the for each method you described and set up a loop. This is this run time error. I am trying to figure out what I can use to call that most recently downloaded .csv file. Any assistance would be greatly appreciated.

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mmuscatell 18 on at

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Thank you for the reply, I told the system to specify which file I would like it to look at using the %Files[0]% but got a new error. How should I proceed here? Any help is greatly appreciated.

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MichaelAnnis 5,727 Moderator on at

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You have two options...for each or loop.

For Each %CurrentItem% in %Files% will do whatever you put inside the 'For Each' and do that for each file. Anytime you want to reference the current file you are on, you use %CurrentItem%.

Loop would be set up as: Loop 0 to %Files.Count - 1% increment 1 as %LoopIndex%. Then put your actions inside the loop. Anytime you want to reference the specific file you are on, you use %Files[LoopIndex]%

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mmuscatell 18 on at

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Hello, Thank you again Michael. From one Mike to another I truly appreciate it. I know you would understand the unspeakable bond between Michaels. Anyways. I was able to apply both of those methods but now something else is happening when running my flows. It is not copy and pasting into the target excel document. I open it and don't see the data and check the date modified and see that it wasn't updated from when I clicked the flow. I tested these steps by themselves with these steps. Read from CSV->Launch Excel->Write to Excel Worksheet->And Save Excel it worked fine. Is there something else I am missing with my original flow?

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MichaelAnnis 5,727 Moderator on at

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Your CSVTable variable is a datatable variable type, correct? I am not sure you can just write a datatable variable type as a whole into Excel A1 the way you are meaning to. Are you simply trying to open a csv and resave it as Excel, then look here:

Launch Excel with your csv file and then Close Excel with the following:
Note: %CurrentItem.Directory% will save it right back where you got it from. You can use any %FilePath% there and save it wherever you want. %CurrentItem.NameWithoutExtenstion% will rename it the same as you want, just with the extension selected in 'Document Format' instead of .csv.

Good luck!

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mmuscatell 18 on at

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Thank you again for your assistance on this. Yes my CSV table variable is a datatable variable. I am not trying to change the file type. I am just downloading a CSV then wanting to copy its contents to a certain excel document and paste the information into a specific raw data tab to power the data models for an excel dashboard. I know I am close but getting lost in this new venture of automation.

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MichaelAnnis 5,727 Moderator on at

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Okay, sorry for the confusion. Set your CSV table to the clipboard text and then you can use "Paste cells to Excel worksheet" on A1.

Note: by default (i.e. pasted text is set to tab delimited), this will paste exactly how it is copied, so all the text for row 1 goes into A1, all the text for row 2 goes into A2, etc; like this:

If you want it to delimitate by comma upon pasting (or after), you have to do a Text to columns either before or after, and you can set that up using the recorder.

We will get there.

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