求HTML提取正则


<div class="righ">
                {cx type="memberinfo" }
                <span class="listtia">ACCOUNT CONFIRMATION</span>
                <div class="logininfo">
                    <dl>
                        <dt>Enter your email account</dt><dd><input type="text" name="user_name" id="user_name"
                            size="30" value=""></dd>
                        <dt>Enter your password</dt><dd><input type="password" name="password" id="password"
                            size="30" value=""></dd>
                    </dl>
                </div>
                <span class="submit">
                    <input type="submit" name="submit" value=""></span> 
                {/cx}
            </div>提取 {cx...}与{/cx}之间的html代码
原正则只适合同一行 像html源码这种有换行就不行了
求在原基础上改动的能兼容换行的正则MatchCollection mc = Regex.Matches(temp, @"(?i)\{cx\s+.+?(/\}|\{/cx\})"); //只能提取同一行 {cx /}与{cx}..{/cx}