[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Returns a copy of this string converted to uppercase.
Assembly: mscorlib (in mscorlib.dll)
This method uses the casing rules of the current culture to convert each character in the current instance to its uppercase equivalent. If a character does not have an uppercase equivalent, it is included unchanged in the returned string.
This method does not modify the value of the current instance. Instead, it returns a new string in which all characters in the current instance are converted to uppercase.
The method is often used to convert a string to uppercase so that it can be used in a case-insensitive comparison. A better method to perform case-insensitive comparison is to call a string comparison method that has a parameter whose value you set to for a culture-sensitive, case-insensitive comparison.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see dd66cd4c-b087-415f-9c3e-94e3a1835f74.