Private ReadOnly conversionOptions As New Dictionary(Of Integer, (FunctionName As String, Description As String, Example As String)) From { {1, ("ToUpperCase", "转换为大写形式", "例如: hello -> HELLO")}, {2, ("ToLowerCase", "转换为小写形式", "例如: HELLO -> hello")}, {3, ("ToTitleCase", "标题格式(每个单词首字母大写)", "例如: hello world -> Hello World")}, {4, ("CapitalizeFirst", "句首大写(仅第一个字母大写)", "例如: hello world -> Hello world")} }