一般由微軟自帶的分頁效率極低
每次查詢服務器端都會發送所有的查詢記錄到浏覽器端
為此，很多人就用存儲過程來提高效率，每次傳送的都是一個頁面的內容
今天自己弄了個分頁的，呵呵
每次都傳送一個頁面的內容，不過沒有用到存儲過程，呵呵
看代碼自己領悟吧，呵呵...
在前台弄些分頁的常用控件，呵呵
<ASP:Button ID="Button3" runat="server" Text="首頁" OnClick="Button3_Click" />
<ASP:Button ID="Button1" runat="server" Text="上一頁" OnClick="Button1_Click" />
當前第<asp:Label ID="Label1" runat="server" Text="Label"></ASP:Label>頁
<ASP:Button ID="Button2" runat="server" Text="下一頁" OnClick="Button2_Click" />
<ASP:Button ID="Button4" runat="server" Text="尾頁" OnClick="Button4_Click" />
跳到第<asp:TextBox ID="TextBox1" runat="server" Width="31px"></asp:TextBox>頁<ASP:Button ID="Button5" runat="server" OnClick="Button5_Click" Text="GO" />
後台代碼如下，呵呵...
private static int pagesize;
private static int n;//count
private static int c;//current index
string connectionstring = ConfigurationManager.APPSettings["SqlConnectionString"].ToString();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Button1.Enabled = false;
Label1.Text = "1";
pagesize = 5;
c=n=count();
msg_top(c);
}
}
private int count()
{
SqlConnection con = new SqlConnection(connectionstring);
con.Open();
string sql = "select count(*) from MSGPlate";
SqlCommand cmd = new SqlCommand(sql, con);
return (int)cmd.ExecuteScalar();
}
void msg_top(int c)
{
string msg_top = "";
SqlConnection con = new SqlConnection(connectionstring);
con.Open();
string sql = "select top "+pagesize+" * from MSGPlate where id in(select top "+c+" id from MSGPlate order by id desc)order by id asc";
SqlCommand cmd = new SqlCommand(sql, con);
SqlDataReader rs = cmd.ExecuteReader();
Response.Write("<div id='MPback'>");
Response.Write("<div id='MPline'>");
Response.Write("<div id='MPicon'> </div>");
Response.Write("<div id='MPpage'>");
Response.Write("<strong>最新留言</strong> [<a href=msg_add.ASPx >添加留言</a>]");
Response.Write("</div>");
Response.Write("<div id='MPfont'>");
Response.Write("<SPAN id=fontCtrl title=設置字體大小>大字/<A class=b1 href='Javascript:setSize(12)'><font color='FFFD68'>小字</font></A></SPAN>");
Response.Write("</div>");
Response.Write("</div>");
Response.Write("</div>");
if (rs.HasRows)
{
while (rs.Read())
{
Response.Write("<div class='MPct'>");
Response.Write("<div class='MPcta'>");
Response.Write("<strong> 標題：" + rs["title"].ToString() + "</strong>");
Response.Write("</div>");
Response.Write("<div class='MPctb'>");
Response.Write("操作");
Response.Write("</div>");
Response.Write("</div>");
Response.Write("<div class='MPcl'>");
Response.Write("<div class='MPclc'>");
Response.Write("" + rs["content"].ToString() + ""
);
Response.Write("</div>");
Response.Write("<div class='MPclinfo'>");
Response.Write("</div>");
Response.Write("<div class='MPclin'>");
Response.Write("<div class='MPlefts'>");
Response.Write("<strong> </strong>");
Response.Write("</div>");
Response.Write("<div style='width:100%; height:auto; font-weight:600; text-align:left; padding-left:30px'>回復:</div>");
Response.Write("<div style='width:100%; height:auto; text-align:left; padding-left:40px;'>" + rs["recall"].ToString() + "</div>");
Response.Write("<div class='MPrights'>");
Response.Write("<strong> 發表：</strong>" + rs["cname"].ToString() + "");
Response.Write("<strong> 時間：</strong>" + rs["addtime"].ToString() + "");
Response.Write("</div></div>");
Response.Write("</div>");
}
}
con.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
Button1.Enabled = true;
Button2.Enabled = true;
if (c >= n-pagesize)
{
Button1.Enabled = false;
}
Response.
Clear();
c = c + pagesize;
Response.Write(c.ToString());
msg_top(c);
Label1.Text = Convert.ToString((n - c) / pagesize + 1);
}
protected void Button2_Click(object sender, EventArgs e)
{
Button1.Enabled = true;
Button2.Enabled = true;
if (c <=pagesize*2)
{
Button2.Enabled = false;
}
Response.Clear();
c = c - pagesize;
Response.Write(c.ToString());
msg_top(c);
Label1.Text=Convert.ToString((n-c)/pagesize+1);
}
protected void Button3_Click(object sender, EventArgs e)
{
Button1.Enabled = false;
Button2.Enabled = true;
c = n;
Response.Clear();
Response.Write(c.ToString());
msg_top(c);
Label1.Text = "1";
}
protected void Button4_Click(object sender, EventArgs e)
{
Button1.Enabled = true;
Button2.Enabled = false;
c =n- (n / pagesize)*pagesize;
Response.Clear();
Response.Write(c.ToString());
msg_top(c);
Label1.Text = Convert.ToString(n/pagesize + 1);
}
protected void Button5_Click(object sender, EventArgs e)
{
int gx = Convert.ToInt32(TextBox1.Text);
if (gx < 1 || gx > n / pagesize)
; {
}
else
{
Button1.Enabled = true;
Button2.Enabled = true;
if (c >= n - pagesize)
{
Button1.Enabled = false;
}
if (c <= pagesize * 2)
{
Button2.Enabled = false;
}
c = n - ((gx - 1) * pagesize);
Response.Clear();
Response.Write(c.ToString());
msg_top(c);
Label1.Text = Convert.ToString((n - c) / pagesize + 1);
}
}
ok了，雖然不是什麼傑作，不過好像效果還不錯，呵呵，效率都歸於top的魅力，呵呵
有興趣交個朋友的加我QQ，呵呵，648952046
