UiPath Advance Certification| Topic 32 UiPath ERROR & EXCEPTION HANDLING | UIPATH ARGUMENT NULL

Watch error and exception handling in uipath. You will get an example of argument null exception with example
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Completed. Thank you so much, Rakesh!😊😊

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can you please do process description level 3 in ACME system

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[@bhavanakoturu597]

Hi Sir, if any data type variable (ex: DataTable) passed as argument in any flow without initializing then it would be a Argument null exception or Null reference exception?

[@bhavanakoturu597]

I have tested in studio by passing data table as argument without initializing it then it throws Null Reference Exception, but when I have tested by passing list without initializing as argument then it is throwing Argument Null Reference. Could u please tell me the difference sir. why for Data table the exception msg was object ref not set to instance of object but for list Value cannot be null.

[@salmanfaries3064]

Hey Rakesh, i have a doubt. in the previous video, you said that if dt or anything not initialized , then it will throw "NULL REFERENCE EXCEPTION." But here you are saying that it will throw "Argument Null Exception". Please elaborate this?

[@syednaseerudinpashaqadri4658]

1. Null Reference Exception : Null reference exception occurs when you use a variable and it’s value is null. Eg: Using Assign Activity to Assign the Number of Rows of a DataTable Called DT1 to a Int32 Variable Called RowCount. But the Problem here is DT1 is Created but not instantiated. It means We are Referencing to a Null Variable. 2. Argument Null Exception : when you pass an invalid argument to a "method". Your method expects a non null argument. when the Input Argument for a Method is Null the Argument Null Exception is thrown. i.e From the video, the Input Argument "List1" which was Null('Created but not instantiated') was given to the Method "Sort" in Invoke Method Activity. Hence it is Argument Null Exception.

[@bhavanakoturu597]

Hi @@syednaseerudinpashaqadri4658 if the same datatable variable passed as argument in any flow then it would be Argument null exception or Null reference exception?

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