我正在尝试创建一个函数来为多语言菜单生成HTML文件。代码可以工作，但唯一的问题是编译时间太长。流程是，此函数将在Global.asax文件中调用（启动程序之前的过程）
我怀疑它是由循环过程引起的。所以请告诉我有关优化的建议。先感谢您。这是代码。
public static void GenerateMenu(string strPath)
{
string[] tempCateHTML = new string[] { "_temp_menu_en.cshtml", "_temp_menu_bm.cshtml", "_temp_menu_ch.cshtml" }; //temporary file names
string[] cateHTML = new string[] { "_menu_en.cshtml", "_menu_bm.cshtml", "_menu_ch.cshtml" };
for (int i = 0; i < 3; i++)
{
using (EFContext ctx = new EFContext())
{
List<int> parentId = new List<int>();
List<Category> parentCategory = ctx.Database.SqlQuery<Category>
("select CategoryId, category_name, category_nameBM, category_nameCH from dbo.lCategories where thread_parent = 0").ToList();
StringWriter sWriter = new StringWriter();
using (HtmlTextWriter wt = new HtmlTextWriter(sWriter))
{
foreach (Category cate in parentCategory)
{
string[] columnParent = new string[] { cate.Category_Name, cate.Category_NameBM, cate.Category_NameCH };
wt.RenderBeginTag(HtmlTextWriterTag.Li); //<li>
wt.AddAttribute(HtmlTextWriterAttribute.Href, "#");
wt.RenderBeginTag(HtmlTextWriterTag.A); //<a>
wt.Write(columnParent[i]);
wt.RenderEndTag();//</a>
wt.RenderBeginTag(HtmlTextWriterTag.Ul);//<ul>
List<Category> childCategoryL1 = ctx.Database.SqlQuery<Category>
("select CategoryId, category_name, category_nameBM, category_nameCH from dbo.lCategories where thread_parent = {0}", cate.CategoryID).ToList();
foreach (Category root in childCategoryL1)
{
string[] columnChild1 = new string[] { root.Category_Name, root.Category_NameBM, root.Category_NameCH };
wt.RenderBeginTag(HtmlTextWriterTag.Li);//<li>
wt.AddAttribute(HtmlTextWriterAttribute.Href, "#");
wt.RenderBeginTag(HtmlTextWriterTag.A);//<a>
wt.Write(columnChild1[i]);
wt.RenderEndTag();//</a>
List<Category> childCategoryL2 = ctx.Database.SqlQuery<Category>
("select CategoryId, category_name, category_nameBM, category_nameCH from dbo.lCategories where thread_parent = {0}", root.CategoryID).ToList();
if (childCategoryL2.Count > 0)
{
wt.RenderBeginTag(HtmlTextWriterTag.Ul);//<ul>
foreach (Category child1 in childCategoryL2)
{
string[] columnChild2 = new string[] { child1.Category_Name, child1.Category_NameBM, child1.Category_NameCH };
wt.RenderBeginTag(HtmlTextWriterTag.Li);//<li>
wt.AddAttribute(HtmlTextWriterAttribute.Href, "#");
wt.RenderBeginTag(HtmlTextWriterTag.A);//<a>
wt.Write(columnChild2[i]);
wt.RenderEndTag();//</a>
List<Category> childCategoryL3 = ctx.Database.SqlQuery<Category>
("select CategoryId, category_name, category_nameBM, category_nameCH from dbo.lCategories where thread_parent = {0}", child1.CategoryID).ToList();
if (childCategoryL3.Count > 0)
{
wt.RenderBeginTag(HtmlTextWriterTag.Ul);//<ul>
foreach (Category child2 in childCategoryL3)
{
string[] columnChild3 = new string[] { child2.Category_Name, child2.Category_NameBM, child2.Category_NameCH };
wt.RenderBeginTag(HtmlTextWriterTag.Li);//<li>
wt.AddAttribute(HtmlTextWriterAttribute.Href, "#");
wt.RenderBeginTag(HtmlTextWriterTag.A);//<a>
wt.Write(columnChild3[i]);
wt.RenderEndTag();//</a>
wt.RenderEndTag();//</li>
}
wt.RenderEndTag();//</ul>
}
wt.RenderEndTag();//</li>
}
wt.RenderEndTag();//</ul>
}
wt.RenderEndTag();//</li>
}
wt.RenderEndTag();//</ul>
wt.RenderEndTag();//</li>
}
}
string menuHTML = sWriter.ToString();
string filePath = Path.Combine(strPath, @"Views\Shared\CacheData\CateMenu\");
new FileInfo(filePath).Directory.Create(); //create new folder
var menuPath = String.Format("{0}{1}", filePath, tempCateHTML[i]); //create multiple HTML files for multiple language
using (FileStream fs = new FileStream(menuPath, FileMode.Append, FileAccess.Write))
{
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine(menuHTML);
sw.Flush();
sw.Close();
fs.Close();
}
if (!File.Exists(filePath + cateHTML[i]))
{
using (File.Create(filePath + cateHTML[i]))
{
//create dummy file if the file doesnt exists
}
}
File.Replace(menuPath, filePath + cateHTML[i], filePath + cateHTML[i] + ".bac");
}
}
}
这是一个漫长的过程。非常感谢您的时间