asp中的InStr() LCase() ChrW() Chr() Clng()分别对应C#下的哪些函数？

Question

Function VbsUnEscape(str)
                    Dim x
        x=InStr(str,"%") 
        Do While x>0
            VbsUnEscape=VbsUnEscape&Mid(str,1,x-1)
            If LCase(Mid(str,x+1,1))="u" Then
                VbsUnEscape=VbsUnEscape&ChrW(CLng("&H"&Mid(str,x+2,4)))
                str=Mid(str,x+6)
            Else
                VbsUnEscape=VbsUnEscape&Chr(CLng("&H"&Mid(str,x+1,2)))
                str=Mid(str,x+3)
            End If
            x=InStr(str,"%")
        Loop
        VbsUnEscape=VbsUnEscape&str
    End Function以上函数用在asp中 如何改成在C#中使用？

Answer 1

高手帮忙看看
高手帮忙看看
高手帮忙看看
我的改法 但是不行
public void VbsUnEscape( str)
        {
            var x;
            x = IndexOf(str,"%");
            do
            {
                VbsUnEscape =VbsUnEscape+Substring(str,1,x-1);
                if(ToLower(Substring(str,x+1,1))="u") 
                {
                    VbsUnEscape =VbsUnEscape+Convert.ToChar(Convert.ToInt64("+H"+Substring(str,x+2,4)));
                    str=Substring(str,x+6);
                }
                else
                {
                    VbsUnEscape =VbsUnEscape+Convert.ToChar(Convert.ToInt64("+H"+Substring(str,x+1,2)));
                    str=Substring(str,x+3);
                }
                x=IndexOf(str,"%");
             
            }
            while(x>0);
            VbsUnEscape=VbsUnEscape+str;
            
        }