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ArgumentNullException in C#
The exception thrown when a null reference is passed to a method that does not accept it as a valid argument.
Let us see an example.
When we set a null parameter to int.Parse() method, then ArgumentNullException is thrown as shown below −
Example
using System; class Demo { static void Main() { string val = null; int res = int.Parse(val); // error is thrown } }
Output
The following error is thrown when the above program is compiled since we have passed a null value.
Unhandled Exception: System.ArgumentNullException: Value cannot be null.
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