protected int pageNo = 1, pageSum = 1;
protected void Page_Load(object sender, EventArgs e)
{
//实际应用中，此处的数据通过操作数据库来获取
ArticleTitle = "文章标题";
string filename = "20091795819.html";
string mPath = Server.MapPath("h3g/");
string filepath = mPath + filename;
ShowArticle(filepath);
}
protected void ShowArticle(string filepath)
{
string page = Request.Params["page"];
int perPageLine = 5;//每页行数
ArrayList al = fileOpr.ReadFileContentToArrayList(filepath);//按行读取文件内空到数组中
int contentLine = al.Count;
pageSum = (int)System.Math.Ceiling((double)contentLine / perPageLine);//总页数,进1取整
if (page == null || page == "" || page == "1")
{
pageNo = 1;
if (contentLine <= perPageLine)
{
for (int i = 0; i < contentLine; i++)
{
Article += al[i].ToString();
}
}
else
{
for (int i = 0; i < perPageLine; i++)
{
Article += al[i].ToString();
}
firstLink.Visible = false;
preLink.Visible = false;
nextLink.NavigateUrl = "?page=" + (pageNo + 1);
nextLink.Visible = true;
lastLink.NavigateUrl = "?page=" + pageSum;
lastLink.Visible = true;
}
}
else
{
pageNo = int.Parse(page);
if (pageNo < pageSum)
{
for (int i = perPageLine * (pageNo - 1); i < perPageLine * pageNo; i++)
{
Article += al[i].ToString();
}
firstLink.NavigateUrl = "?page=1";
firstLink.Visible = true;
preLink.NavigateUrl = "?page=" + (pageNo - 1);
preLink.Visible = true;
nextLink.NavigateUrl = "?page=" + (pageNo + 1);
nextLink.Visible = true;
lastLink.NavigateUrl = "?page=" + pageSum;
lastLink.Visible = true;
}
else
{
for (int i = contentLine - perPageLine * (pageSum - 1); i < contentLine; i++)
{
Article += al[i].ToString();
}
firstLink.NavigateUrl = "?page=1";
firstLink.Visible = true;
preLink.NavigateUrl = "?page=" + (pageNo - 1);
preLink.Visible = true;
nextLink.Visible = false;
lastLink.Visible = false;
}
}
}
}
重用类fileOpr.cs：
fileOpr.ReadFileContentToArrayList(filepath);中的方法：
public static ArrayList ReadFileContentToArrayList(string filepath)
{
ArrayList al = new ArrayList();
FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read);
StreamReader srd = new StreamReader(fs, Encoding.Default);
//使用StreamReader类来读取文件
srd.BaseStream.Seek(0, SeekOrigin.Begin);
string strLine = srd.ReadLine();
while (strLine != null)
{
strLine = srd.ReadLine();
al.Add(strLine + "n");
}
//关闭此StreamReader对象
srd.Close();
fs.Dispose();
fs.Close();
return al;
}
注：有种文章分页的思路是用截取文本字符数的方法来处理，这个方法当文章内容是html代码的话，分页后会引起排版问题。
上面代码的方法思路是按行数来处理，这个方法个人认为相对更好些。在后台管理文章内容文件时，保证html代码的良好排版换行即可。
