File not found handler

[bidev]

I have a code that looks for a file exists or not before doing further processing.  Result of "try Source" evaluation, Test[HasError] in if statement returns "False" always, whether or not there was a file "MyLog.log" in  the path "C:\Log-Files\Empty-LogFolder\".

Appreciate if you can shed some light on it.  Code below.  Thank you.   

***********************************

let
    File_Path = "C:\Log-Files\Empty-LogFolder\MyLog.log",
    Source = Csv.Document(File.Contents(File_Path),[Delimiter=";", Columns=3, Encoding=1252, QuoteStyle=QuoteStyle.None]),
   Test = try Source,
   Output = if Test[HasError] then "True" else "False"
in
   Output

[v-shex-msft · Accepted solution]

Hi bidev,

Based on test, I can achieve your requirement, perhaps you could refer to below code:

let

    Path = "C:\Users\xxxxx\Desktop\audit.csv",

    Result = try Binary.ToText(File.Contents(Path)),

    Output =if Logical.From(Result[HasError]) then "not exist" else "exist"

in

Output

Screenshots.

Exist:

 

Not exist:

Descript:

Path = "C:\Users\xxxxx\Desktop\audit.csv", // the file path.

File.Contents(Path) // get the file from specify path and convert it to binary.

Binary.ToText(), // convert binary format to text.

Try //catch the error , if the action has error, it means the file doesn’t exist.

Output =if Logical.From(Result[HasError]) then "not exist" else "exist" //use if to format the result to text.

Reference:

Binary.ToText

File.Contents

Logical.From

Regards,

Xiaoxin Sheng

[bidev]

Hello Xiaoxin_Sheng,

Thank you very much.  Your solution really worked!  Awesome.

Thanks again.