Question

我在ASP.NET MVC的标记中找到了一篇关于removing whitespace的文章，然而，当我使用代码转换器时，“函数”没有正确转换

public class WhitespaceFilterAttribute : ActionFilterAttribute
    {

        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {

            var request = filterContext.HttpContext.Request;
            var response = filterContext.HttpContext.Response;

            response.Filter = new WhiteSpaceFilter(response.Filter, s =>
                    {
                        s = Regex.Replace(s, @"\s+", " ");
                        s = Regex.Replace(s, @"\s*\n\s*", "\n");
                        s = Regex.Replace(s, @"\s*\>\s*\<\s*", "><");
                        s = Regex.Replace(s, @"<!--(.*?)-->", "");   //Remove comments

                        // single-line doctype must be preserved 
                        var firstEndBracketPosition = s.IndexOf(">");
                        if (firstEndBracketPosition >= 0)
                        {
                            s = s.Remove(firstEndBracketPosition, 1);
                            s = s.Insert(firstEndBracketPosition, ">");
                        }
                        return s;
                    });

            }

    }

这是Telerik代码转换器生成的内容，

    Public Overrides Sub OnActionExecuting(ByVal filterContext As ActionExecutingContext)

        Dim request = filterContext.HttpContext.Request
        Dim response = filterContext.HttpContext.Response

        response.Filter = New WhiteSpaceFilter(response.Filter, Function(s) Do
        s = Regex.Replace(s, "\s+", " ")
        s = Regex.Replace(s, "\s*\n\s*", vbLf)
        s = Regex.Replace(s, "\s*\>\s*\<\s*", "><")
        s = Regex.Replace(s, "<!--(.*?)-->", "")
        'Remove comments 
        ' single-line doctype must be preserved 
        Dim firstEndBracketPosition = s.IndexOf(">")
        If firstEndBracketPosition >= 0 Then
            s = s.Remove(firstEndBracketPosition, 1)
            s = s.Insert(firstEndBracketPosition, ">")
        End If
        Return s
        End Function)

    End Sub

但Function(s) Do无效。我不知道如何将函数作为参数传递给方法。

Answer 1

您应该在VB.NET this中使用委托，而this可以帮助您。

Answer 2

它基本上是c＃中的lambda表达式。：http://msdn.microsoft.com/en-us/library/bb397687.aspx
您需要了解如何在VB.net中执行相同操作：http://msdn.microsoft.com/en-us/library/bb531253.aspx

你会如何将其转换为有效的VB.NET？

2 个答案: