用DataGrid默认的分页方式有两个小问题
1.要有viewstate,由你表的数据量决定,一般情况下较大
2.用的是PostBack方式，刷新的时候提示是否要重发消息
所以改为取消viewstate在OnItemCreated生成HyperLink 方式，避免了以上两个问题
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<script language="C#" runat="server">
public void ItemCreated(Object sender, DataGridItemEventArgs e) {
ListItemType elemType = e.Item.ItemType;
if (elemType == ListItemType.Pager)
{
TableCell pager = (TableCell) e.Item.Controls[0];
for (int i=0; i<pager.Controls.Count; i+=2)
{
Control o = pager.Controls[i];
if (o is LinkButton)
{
LinkButton lb = (LinkButton) o;
HyperLink hl=new HyperLink();
hl.NavigateUrl=Request.Path + "?page="+lb.CommandArgument;
hl.Text="[ "+lb.Text+" ]";
pager.Controls.RemoveAt(i);
pager.Controls.AddAt(i,hl);
}
else
{
Label l = (Label) o;
l.Text = "Page " + l.Text;
}
}
}
}
protected void Page_Load(Object sender, EventArgs e)
{
if(!Page.IsPostBack){
int pageIndex=0;
try{pageIndex=Int32.Parse(Request["page"])-1;}catch(Exception ex){}
Response.Write(MyDataGrid.PageCount);
MyDataGrid.CurrentPageIndex=pageIndex;
BindData();
}
}
void BindData(){
//绑定数据库，略
}
</script>
<HTML>
<body>
<form id="Form1" method="post" runat="server">
<asp:datagrid id="MyDataGrid" runat="server" EnableViewState="false" AllowPaging="True" PageSize="10"
OnItemCreated="ItemCreated"
PagerStyle-BackColor="#FFFFFF"
PagerStyle-HorizontalAlign="Right"
PagerStyle-Mode="NumericPages">
</asp:datagrid>
</form>
</body>
</HTML> |
