Attempting to pass a format string to an object that implements the IFormattable interface, but where the format string isn’t one of the standard format strings.GUIDs that aren’t 32-hexadecimal digits.DateTime class parse attempts that don’t conform to the expected culture-specific formatting patterns.Conversion attempts using Convert class methods in an attempt to change a string into another data type by passing an invalid string value.
#SYSTEM.FORMATEXCEPTION VISUAL MICRO CODE#
In fact, there are far too many edge cases to go through them all here, let alone provide code examples, so we’ll just briefly list a few common scenarios that could lead to a System.FormatException: NET that inherit directly from System.SystemException, the System.FormatException is quite broad and encompasses a great deal of potential format-related issues. Like many of the Exception classes within. System.FormatException inherits directly from System.SystemException.System.SystemException is inherited from the System.Exception class.NET exceptions are derived classes of the System.Exception base class, or derived from another inherited class therein. We’ll also take a look at a few functional C# code samples that will illustrate how the System.FormatException might be thrown in some everyday code, so you can better plan for handling them yourself. We’ll spend some time in this article exploring the System.FormatException in more detail, such as where it resides in the. As the name implies, the System.FormatException is thrown in a wide variety of scenarios, yet they all revolve around providing an improperly formatted argument to a vast array of methods and API calls. NET Exception Handling series, today we come across the System.FormatException.