Char.ToUpper Method (Char)
Converts the value of a Unicode character to its uppercase equivalent.
Assembly: mscorlib (in mscorlib.dll)
Casing rules are obtained from the current culture.Notes to Callers
Starting in Silverlight 4, the behavior of the method has changed. In Silverlight 4, it converts c to uppercase using the casing rules of the current culture. This conforms to the behavior of the method in the full .NET Framework. In Silverlight 2 and Silverlight 3, uses the casing rules of the invariant culture. If the common language runtime determines that a Silverlight-based application was compiled against Silverlight 2 or Silverlight 3, it performs an ordinal comparison; otherwise, it performs a culture-sensitive comparison.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.