C# 将字符串转为ऩ这种的 html实体编码

private string GetHtmlEntities(string str)
{
string r = string.Empty;
for (int i = 0; i < str.Length; i++)
{
r += "&#" + Char.ConvertToUtf32(str, i) + ";";
}
return r;
}

function htmlentities(str)
{
var r = "";
for( i=0; i<str.length; i++ )
{
temp = str.charCodeAt(i);
r += "&#"+temp+";";
}

//  也可以用一句正则表达式解决
// r = str.replace(/[\d\D]/g, function($0) { return "&#" + $0.charCodeAt(0) + ";"; });
return r;
}