下面方法是让设置的关键字高亮显示,考虑到了注释与字符串的影响,所以备用,以便将来能够用到.
private static void ColorizeCode(RichTextBox rtb) { string[] keywords = {"as", "do", "if", "in", "is", "for", "int", "new", "out", "ref", "try", "base", "bool", "byte", "case", "char", "else", "enum", "goto", "lock", "long", "null", "this", "true", "uint", "void", "break", "catch", "class", "const", "event", "false", "fixed", "float", "sbyte", "short", "throw", "ulong", "using", "where", "while", "yield", "double", "extern", "object", "params", "public", "return", "sealed", "sizeof", "static", "string", "struct", "switch", "typeof", "unsafe", "ushort", "checked", "decimal", "default", "finally", "foreach", "partial", "private", "virtual", "abstract", "continue", "delegate", "explicit", "implicit", "internal", "operator", "override", "readonly", "volatile", "interface", "namespace", "protected", "unchecked", "stackalloc", "from", "in", "where", "select", "join", "equals", "let", "on", "group", "by", "into", "orderby", "ascending", "descending", "var"}; string text = rtb.Text; rtb.SelectAll(); rtb.SelectionColor = rtb.ForeColor; foreach (String keyword in keywords) { int keywordPos = rtb.Find(keyword, RichTextBoxFinds.MatchCase | RichTextBoxFinds.WholeWord); while (keywordPos != -1) { int commentPos = text.LastIndexOf("//", keywordPos, StringComparison.OrdinalIgnoreCase); int newLinePos = text.LastIndexOf("\n", keywordPos, StringComparison.OrdinalIgnoreCase); int quoteCount = 0; int quotePos = text.IndexOf("\"", newLinePos + 1, keywordPos - newLinePos, StringComparison.OrdinalIgnoreCase); while (quotePos != -1) { quoteCount++; quotePos = text.IndexOf("\"", quotePos + 1, keywordPos - (quotePos + 1), StringComparison.OrdinalIgnoreCase); } if (newLinePos >= commentPos && quoteCount % 2 == 0) rtb.SelectionColor = Color.Blue; keywordPos = rtb.Find(keyword, keywordPos + rtb.SelectionLength, RichTextBoxFinds.MatchCase | RichTextBoxFinds.WholeWord); } } rtb.Select(0, 0); }
时间: 2024-10-13 08:19:51