[Solved] How to create a C# regex to accept only these characters? [closed]

Something like that:

"[-a-zA-ZâÂäÄáàÀÁéèêëÊÈÉÊË')(ßñÑÇçÌÍìíîïÎÏòóôöÓÔÖÕùúûüÙÚÛÜ]*"