Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Join us for an expert-led overview of the tools and concepts you'll need to become a Certified Power BI Data Analyst and pass exam PL-300. Register now.

Reply
bidev
Frequent Visitor

File not found handler

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

 

1 ACCEPTED SOLUTION
Anonymous
Not applicable

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:

Capture.PNG 

 

Not exist:

Capture2.PNG

 

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

View solution in original post

2 REPLIES 2
Anonymous
Not applicable

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:

Capture.PNG 

 

Not exist:

Capture2.PNG

 

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

Hello Xiaoxin_Sheng,

 

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

 

Thanks again.

Helpful resources

Announcements
Join our Fabric User Panel

Join our Fabric User Panel

This is your chance to engage directly with the engineering team behind Fabric and Power BI. Share your experiences and shape the future.

June 2025 Power BI Update Carousel

Power BI Monthly Update - June 2025

Check out the June 2025 Power BI update to learn about new features.

June 2025 community update carousel

Fabric Community Update - June 2025

Find out what's new and trending in the Fabric community.

Top Solution Authors