还是拼接html代码的问题
上个贴子地址：http://bbs.csdn.net/topics/390558650要求最终生成的html代码：
<ul class="jtlo">
<li class="clearfix">
<span style="padding-top:190px;">
<img src="images/1.png"/>
</span>
<span style="padding-top:152px">
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:114px">
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:76px">
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:38px">
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:38px">
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:76px">
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:114px">
<img src="images/1.png"/>
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:152px">
<img src="images/1.png"/>
<img src="images/1.png"/>
</span>
<span style="padding-top:190px;">
<img src="images/1.png"/>
</span>
</li>
</ul>
上个贴子Return_false帮忙写了一下，当时用不到就没细看，现在用到了，发现我要用datareader或dataset输出，之前的代码就有点用不了了。 --------------------编程问答-------------------- 暂时通过这种笨方法解决了，不知有没有更好一点的办法。
--------------------编程问答-------------------- 如果字符长度太长，考虑到速度效率的问题，那么使用StringBuilder来拼接字符串就好一些。
int begin_top = 190;
int step = 38;
int count = 190 / 38;
string begin_html = string.Empty, end_html = string.Empty;
begin_html += @"<li class=""clearfix"">";
end_html += @"</li>";
SqlDataReader sdr = SqlHelper.ExecuteReader(SqlHelper.ConnectionString, CommandType.Text, "SELECT * FROM st_Image");
int l = 0;
for (int i = 0; i <= count; i++)
{
int currentTop = begin_top - i * step;
bool flag = currentTop != 0;
begin_html += string.Format(@"<span style=""padding-top:{0}px;"">", currentTop);
for (int j = 0; j <= i; j++)
{
Response.Write(l + "<br>");
if (sdr.Read())
{
begin_html += string.Format(@"<img src=""{0}""/>", sdr["HomeImgUrl"]);
}
l++;
}
begin_html += "</span>";
}
for (int i = count - 1; i >= 0; i--)
{
int currentTop = begin_top - i * step;
bool flag = currentTop != 0;
begin_html += string.Format(@"<span style=""padding-top:{0}px;"">", currentTop);
//Response.Write(i + "<br>");
for (int j = 0; j <= i; j++)
{
//Response.Write(i + "<br>");
Response.Write(l + "<br>");
if (sdr.Read())
{
begin_html += string.Format(@"<img src=""{0}""/>", sdr["HomeImgUrl"]);
}
l++;
}
begin_html += "</span>";
}
resulthtml = begin_html + end_html;
看看这里网站压力在线测试的页面，返回的字符串长度高达几千，速度就显得至关重要。
补充：.NET技术 , ASP.NET
