模板文件概念的引入

描述：在HTML文件中用某个符号字符串去表示一个标签，在ashx代码中即可用变量名去代替这个标签名

html文件:

<table border="1" cellpadding="0" cellspacing="0">
    <tr>
        <td style="color:Red">姓名</td>
        <td onclick="alert('@name你好');">@name</td>
    </tr>
    <tr>
        <td>年龄</td>
        <td>@age</td>
    </tr>
</table>

ashx文件:

context.Response.ContentType = "text/html";
string name = "张三";
int age = 20;
string FileName = context.Server.MapPath("~/HTMLPage1.htm");
string Html1 = File.ReadAllText(FileName);
string newHtml = Html1.Replace("@name",name).Replace("@age",age.ToString());
context.Response.Write(newHtml);

案例：显示数据库内容到网页上

html文件:

<table border="1" cellpadding="0" cellspacing="0">
    <thead>
        <tr>
            @miHead
        </tr>
    </thead>
        @miFlow
</table>

ashx文件:

context.Response.ContentType = "text/html";
string[] miHead = {"NO","生产流程","构成","条件","模治具编号","定位孔","方向",
                        "?/P","P/S","步距","制作指示","变更","改"};
StringBuilder sb1 = new StringBuilder();
for (int i = 0; i < miHead.Length; i++)
{
    sb1.Append("<th>" + miHead[i] + "</th>");
}
StringBuilder sb2 = new StringBuilder();
DataTable table = SQLHelper.ExecuteReader("select * from Main_Flow");
int j = 1;
foreach (DataRow row in table.Rows)
{
    sb2.Append("<tr><td>" + j + "</td><td>" + row["name"] + "</td>");
    for (int i = 0; i < miHead.Length - 2; i++)
    {
        sb2.Append("<td></td>");
    }
    sb2.Append("</tr>");
    j++;
}
string fileName = context.Server.MapPath("~/modelInput.htm");
string html = File.ReadAllText(fileName);
html = html.Replace("@miHead", sb1.ToString()).Replace("@miFlow", sb2.ToString());
context.Response.Write(html);