开发学院WEB开发ASP 亲密接触ASP.Net(14) 阅读

亲密接触ASP.Net(14)

 2001-05-18 09:54:24 来源:WEB开发网   
核心提示:个性化分页(2)上一节大家没有看到总的结构,这一节,亲密接触ASP.Net(14),我把代码全部贴出来,大家好好看看,即第5页,我们在下面的"当前页数"可以看到:)我们再来点击"显示内置的页数"这个复选框,<%@ Page Language="C#" %
个性化分页(2)

上一节大家没有看到总的结构,这一节,我把代码全部贴出来,大家好好看看。

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SQL" %>
<html>
<script language="C#" runat="server">

void Page_Load(Object sender, EventArgs e)
{
  //判断是否隐藏PagerStyle-Mode
  if (chk1.Checked)
  {
    MyDataGrid.PagerStyle.Visible=true;
  }
  else
  {
    MyDataGrid.PagerStyle.Visible=false;
  }

  BindGrid();
}

ICollection CreateDataSource()
{
  /*
    读取数据库的信息,获得DataView
  */
  SQLConnection MyConnection = new SQLConnection("server=localhost;uid=sa;pwd=123456;database=aspcn");
  SQLDataSetCommand MyDataSetCommand = new SQLDataSetCommand("select * from admin_enter order by Enter_Time desc",MyConnection);
  DataSet ds= new DataSet();
  MyDataSetCommand.FillDataSet(ds,"admin_enter");
  return ds.Tables["admin_enter"].DefaultView;
}

void PagerButtonClick(Object sender, EventArgs e)
{
  //获得LinkButton的参数值
  String arg = ((LinkButton)sender).CommandArgument;

  switch(arg)
  {
    case ("next"):
      if (MyDataGrid.CurrentPageIndex < (MyDataGrid.PageCount - 1))
      MyDataGrid.CurrentPageIndex ++;
      break;
    case ("PRev"):
      if (MyDataGrid.CurrentPageIndex > 0)
      MyDataGrid.CurrentPageIndex --;
      break;
    case ("last"):
      MyDataGrid.CurrentPageIndex = (MyDataGrid.PageCount - 1);
      break;
    default:
      //本页值
      MyDataGrid.CurrentPageIndex = arg.ToInt32();
      break;
  }
  BindGrid();
}

void MyDataGrid_Page(Object sender, DataGridPageChangedEventArgs e)
{
  //处理按下数字的方法
  BindGrid();
}

void BindGrid()
{
  //将DataView绑定到DataGrid上去
  MyDataGrid.DataSource = CreateDataSource();
  MyDataGrid.DataBind();
  ShowStats();
}

void ShowStats()
{
  //显示页面信息
  lblCurrentIndex.Text = "当前页数为: " + ((int)MyDataGrid.CurrentPageIndex+1);
  lblPageCount.Text = "总页数是: " + MyDataGrid.PageCount;
}

</script>

<body>

<h3><font face="Verdana">个性化的分页实例^&^</font></h3>

<form runat=server>

<ASP:DataGrid id="MyDataGrid" runat="server"
AllowPaging="True"
PageSize="10"
PagerStyle-Mode="NumericPages"
PagerStyle-HorizontalAlign="Right"
OnPageIndexChanged="MyDataGrid_Page"
BorderColor="black"
BorderWidth="1"
GridLines="Both"
CellPadding="3"
CellSpacing="0"
Font-Name="Verdana"
Font-Size="8pt"
HeaderStyle-BackColor="#aaaadd"
AlternatingItemStyle-BackColor="#eeeeee"
AutoGenerateColumns="false"

>
<property name="Columns">
<asp:BoundColumn HeaderText="工作室成员" DataField="Enter_ID" />
<asp:BoundColumn HeaderText="登陆时间" DataField="Enter_Time" />
</property>
</ASP:DataGrid>

<p>
<asp:LinkButton id="btnFirst" runat="server"
Text="首页"
CommandArgument="0"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>
 
<asp:LinkButton id="btnPrev" runat="server"
Text="前页"
CommandArgument="prev"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>
 
<asp:LinkButton id="btnNext" runat="server"
Text="后页"
CommandArgument="next"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>
 

<asp:LinkButton id="btnLast" runat="server"
Text="末页"
CommandArgument="last"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>


<p>
<asp:Checkbox id="chk1" runat="server"
Text="显示内置的页数"
Font-Name="Verdana"
Font-Size="8pt"
AutoPostBack="true"
/>

<p>
<table bgcolor="#eeeeee" cellpadding="6"><tr><td nowrap><font face="Verdana" size="-2">

<asp:Label id="lblCurrentIndex" runat="server" /><br>
<asp:Label id="lblPageCount" runat="server" /><br>

</font></td></tr></table>
</form>

</body>

</html>

上面是全部的源代码,执行后的显示是:



图14-1

按下随便一个键,比如"末页"



图14-2

看,我们的程序就直接到了最后一页,即第5页,我们在下面的"当前页数"可以看到:)

我们再来点击"显示内置的页数"这个复选框,看看:



图14-3

看,我们前两节看到的那些小数字也出来了:)

Tags:亲密 接触 ASP

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