All date and time data is interpreted based on the formatting conventions of a particular culture: either the current thread culture (or, in some cases, the current application domain culture), the invariant culture, or a specified culture. Any other value throws a FormatException exception.ĭateTime and DateTimeOffset. The Boolean.Parse(String) and Convert.ToBoolean(String) methods require the string to be converted to be "True", "true", "False", or "false". The conversion of a string to the following types in the System namespace can throw a FormatException exception:īoolean. In this case, you should correct the error rather than handle the exception. However, a FormatException exception that is thrown when you're trying to parse a predefined or hard-coded string indicates a program error. You can also replace the call to the conversion method with a call to a TryParse or TryParseExact method, if one exists. In most cases, particularly if the string that you're converting is input by a user or read from a file, you should use a try/catch block and handle the FormatException exception if the conversion is unsuccessful. This typically occurs when calling some methods of the Convert class and the Parse and ParseExact methods of some types. In a call to a method that converts a string to some other data type, the string doesn't conform to the required pattern.
SerializableAttribute ComVisibleAttribute RemarksĪ FormatException exception can be thrown for one of the following reasons:
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