C# 過濾指令碼_

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System.Text.RegularExpressions.Regex regex1 = new System.Text.RegularExpressions.Regex(@"<script[\s\S]+</script *>",System.Text.RegularExpressions.RegexOptions.IgnoreCase);
             System.Text.RegularExpressions.Regex regex2 = new System.Text.RegularExpressions.Regex(@" href *= *[\s\S]*script *:",System.Text.RegularExpressions.RegexOptions.IgnoreCase);
             System.Text.RegularExpressions.Regex regex3 = new System.Text.RegularExpressions.Regex(@" on[\s\S]*=",System.Text.RegularExpressions.RegexOptions.IgnoreCase);
             System.Text.RegularExpressions.Regex regex4 = new System.Text.RegularExpressions.Regex(@"<iframe[\s\S]+</iframe *>",System.Text.RegularExpressions.RegexOptions.IgnoreCase);
             System.Text.RegularExpressions.Regex regex5 = new System.Text.RegularExpressions.Regex(@"<frameset[\s\S]+</frameset *>",System.Text.RegularExpressions.RegexOptions.IgnoreCase);
             string html=textBox2.Text;
             html = regex1.Replace(html, ""); //過濾<script></script>標記
             html = regex2.Replace(html, ""); //過濾href=javascript: (<A>) 屬性
             html = regex3.Replace(html, " _disibledevent="); //過濾其它控制項的on...事件
             html = regex4.Replace(html, ""); //過濾iframe
             html = regex5.Replace(html, ""); //過濾frameset
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