TagBuilderを継承し、ToStringメソッドをオーバーライドするこのクラスを使用して、属性からSortedDictionaryを構築し、そのディクショナリを使用してレンダリングしてみてください。
public class MyTagBuilder : TagBuilder
{
//required to inherit from TagBuilder
public MyTagBuilder(string tagName) : base(tagName){}
//new hides the original ToString(TagRenderMode renderMode)
//The only changes in this method is that all calls to GetAttributesString
//have been changed to GetMyAttributesString
public new string ToString(TagRenderMode renderMode)
{
switch (renderMode)
{
case TagRenderMode.StartTag:
return string.Format(CultureInfo.InvariantCulture, "<{0}{1}>", new object[] { this.TagName, this.GetMyAttributesString() });
case TagRenderMode.EndTag:
return string.Format(CultureInfo.InvariantCulture, "</{0}>", new object[] { this.TagName });
case TagRenderMode.SelfClosing:
return string.Format(CultureInfo.InvariantCulture, "<{0}{1} />", new object[] { this.TagName, this.GetMyAttributesString() });
}
return string.Format(CultureInfo.InvariantCulture, "<{0}{1}>{2}</{0}>", new object[] { this.TagName, this.GetMyAttributesString(), this.InnerHtml });
}
//Implement GetMyAttributesString where the Attributes are changed to a SortedDictionary
private string GetMyAttributesString()
{
var builder = new StringBuilder();
var myDictionary = new SortedDictionary<string, string>(); //new
foreach (KeyValuePair<string, string> pair in this.Attributes) //new
{ //new
myDictionary.Add(pair.Key, pair.Value); //new
} //new
//foreach (KeyValuePair<string, string> pair in this.Attributes)
foreach (KeyValuePair<string, string> pair in myDictionary) //changed
{
string key = pair.Key;
if (!string.Equals(key, "id", StringComparison.Ordinal) || !string.IsNullOrEmpty(pair.Value))
{
string str2 = HttpUtility.HtmlAttributeEncode(pair.Value);
builder.AppendFormat(CultureInfo.InvariantCulture, " {0}=\"{1}\"", new object[] { key, str2 });
}
}
return builder.ToString();
}
}