GridView和Repeater自定义分页功能的实现
朋友做的一个网站用aspnetpager控件进行分页放到虚拟空间出现问题，看来用分页控件是不行了，但他近期忙于在公司实习，于是让我帮他写个自定义分页。
经过上网查阅相关资料结合自己之前的知识积累，顺利实现了GridView和Repeater自定义分页功能，GridView分页截图如下：
贴上主要实现代码：
1、GridView自定义分页前台核心代码：
GridView.aspx
...
<PagerTemplate>
<br />
<asp:Label ID="lblPage" runat="server" Text='<%# "共" + ((GridView)Container.NamingContainer).PageCount + "页,当前第" + (((GridView)Container.NamingContainer).PageIndex + 1) + "页" %>'></asp:Label>
<asp:LinkButton ID="lbtnFirst" runat="server" Text="首页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>'
CommandName="Page" CommandArgument="First"></asp:LinkButton>
<asp:LinkButton ID="lbtnPrev" runat="server" Text="上一页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>'
CommandName="Page" CommandArgument="Prev"></asp:LinkButton>
<asp:PlaceHolder ID="numeric" runat="server"></asp:PlaceHolder>
<asp:LinkButton ID="lbtnNext" runat="server" Text="下一页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != (((GridView)Container.NamingContainer).PageCount - 1) %>'
CommandName="Page" CommandArgument="Next"></asp:LinkButton>
<asp:LinkButton ID="lbtnLast" runat="server" Text="尾页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != (((GridView)Container.NamingContainer).PageCount - 1) %>'
CommandName="Page" CommandArgument="Last"></asp:LinkButton>
<asp:DropDownList ID="ddlJumpPage" runat="server">
</asp:DropDownList>
<asp:ImageButton ID="btnGo" runat="server" Width="30px" Height="20px" ImageAlign="Bottom" ImageUrl="~/images/go.jpg" CommandName="Go" />
</PagerTemplate>
2、GridView自定义分页后台核心代码：
GridView.aspx.cs
//根据命令来变更当前页码
protected void gvTest_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Page")
{
switch (e.CommandArgument.ToString())
{
case "First":
gvTest.PageIndex = 0;
break;
case "Prev":
if (gvTest.PageIndex > 0)
{
gvTest.PageIndex -= 1;
}
break;
case "Next":
if (gvTest.PageIndex < (gvTest.PageCount - 1))
{
gvTest.PageIndex += 1;
}
break;
case "Last":
gvTest.PageIndex = gvTest.PageCount - 1;
break;
default:
gvTest.PageIndex = Int32.Parse(e.CommandArgument.ToString()) - 1;
break;
}
}
else
{
if (e.CommandName == "Go")
{
DropDownList ddlJumpPage = (DropDownList)gvTest.BottomPagerRow.FindControl("ddlJumpPage");
int index = Int32.Parse(ddlJumpPage.SelectedValue);
gvTest.PageIndex = index - 1;
GetData();
}
}
}
//显示页码导航
protected void gvTest_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Pager)
{
PlaceHolder ph = (PlaceHolder)e.Row.FindControl("numeric");
int startIndex = (gvTest.PageIndex) / 10 * 10 + 1;//根据当前页得到第一个页码
int endIndex = startIndex + 9;//显示10个页码
if (endIndex > gvTest.PageCount)//判断是否为最后一页
{
endIndex = gvTest.PageCount;
}
for (int i = startIndex; i <= endIndex; i++)//通过循环动态显示页码
{
var lbtn = new LinkButton { CommandName = "Page", CommandArgument = i.ToString(), Text = "[" + i + "]" };
ph.Controls.Add(i - 1 != gvTest.PageIndex ? (Control)lbtn : new LiteralControl(i.ToString()));
ph.Controls.Add(new LiteralControl(" "));
}
}
}
3、Repeater自定义分页前台核心代码
Repeater.aspx
...
<asp:Repeater ID="rpTest" runat="server" OnItemDataBound="rpTest_ItemDataBound" OnItemCreated="rpTest_ItemCreated">
...
<FooterTemplate>
<tr>
<td colspan="6">
<br />
共<asp:Label ID="lblPageCount" runat="server" Text=""></asp:Label>页,当前第<asp:Label
ID="lblCurrentPage" runat="server" Text=""></asp:Label>页
<asp:HyperLink ID="hlFirst" runat="server" Text="首页"></asp:HyperLink>
<asp:HyperLink ID="hlPrev" runat="server" Text="上一页"></asp:HyperLink>
<asp:PlaceHolder ID="numeric" runat="server"></asp:PlaceHolder>
<asp:HyperLink ID="hlNext" runat="server" Text="下一页"></asp:HyperLink>
<asp:HyperLink ID="hlLast" runat="server" Text="尾页"></asp:HyperLink>
<asp:DropDownList ID="ddlJumpPage" runat="server">
</asp:DropDownList>
<asp:ImageButton ID="ibtnGo" runat="server" Width="30px" Height="20px" ImageAlign="Bottom"
ImageUrl="~/images/go.jpg" OnClick="ibtnGo_Click" />
</td>
</tr>
</table>
</FooterTemplate>
</asp:Repeater>
<asp:Label ID="lblMessage" runat="server"></asp:Label>
4、Repeater自定义分页后台核心代码
Repeater.aspx.cs
//返回待绑定的数据源
private PagedDataSource GetPds()
{
StudentInfo stuInfo = new StudentInfo();
DataSet ds = stuInfo.GetStudent();
PagedDataSource pds = new PagedDataSource();
pds.DataSource = ds.Tables[0].DefaultView;//设置数据源
pds.AllowPaging = true;//允许分页
pds.PageSize = 10;//一页显示10条信息
if (Request.QueryString["page"] != null)//判断页面传值是否为空
{
pds.CurrentPageIndex = Int32.Parse(Request.QueryString["page"].ToString()) - 1;
}
else
{
pds.CurrentPageIndex = 0;
}
return pds;
}
//显示底部分页按钮并向下拉列表控件中填充数据
protected void rpTest_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (GetPds().DataSourceCount != 0)
{
if (e.Item.ItemType == ListItemType.Footer)//判断是否为页脚
{
Label lblRecordCount = (Label)e.Item.FindControl("lblRecordCount");
Label lblPageCount = (Label)e.Item.FindControl("lblPageCount");
Label lblCurrentPage = (Label)e.Item.FindControl("lblCurrentPage");
HyperLink hlFirst = (HyperLink)e.Item.FindControl("hlFirst");
HyperLink hlPrev = (HyperLink)e.Item.FindControl("hlPrev");
HyperLink hlNext = (HyperLink)e.Item.FindControl("hlNext");
HyperLink hlLast = (HyperLink)e.Item.FindControl("hlLast");
DropDownList ddlJumpPage = (DropDownList)e.Item.FindControl("ddlJumpPage");
int pageCount = GetPds().PageCount;
int curPage = GetPds().CurrentPageIndex + 1;
for (int i = 1; i <= pageCount; i++)
{
ddlJumpPage.Items.Add(i.ToString());
}
if (pageCount == 1)//若总页数只有一页，则底部分页链接不可用
{
hlFirst.Enabled = false;
hlPrev.Enabled = false;
hlNext.Enabled = false;
hlLast.Enabled = false;
}
else
{
if (curPage <= 1)//若当前为首页，则首页和上一页的链接不可用
{
hlFirst.Enabled = false;
hlPrev.Enabled = false;
hlNext.Enabled = true;
hlLast.Enabled = true;
}
else
{
hlPrev.NavigateUrl = "?page=" + (curPage - 1);
}
if (curPage >= pageCount)//若当前页为最后一页，则下一页和尾页的链接不可用
{
hlFirst.Enabled = true;
hlPrev.Enabled = true;
hlNext.Enabled = false;
hlLast.Enabled = false;
}
else
{
hlNext.NavigateUrl = "?page=" + (curPage + 1);
}
hlFirst.NavigateUrl = "?page=1";
hlLast.NavigateUrl = "?page=" + pageCount;
}
lblPageCount.Text = pageCount.ToString();
lblCurrentPage.Text = curPage.ToString();
}
}
else//若数据源中无信息，则显示相关提示
{
rpTest.Visible = false;
lblMessage.Text = "无相关记录";
}
}
//显示页码导航
protected void rpTest_ItemCreated(object sender, RepeaterItemEventArgs e)
{
if (GetPds().DataSourceCount != 0)
{
if (e.Item.ItemType == ListItemType.Footer)
{
PlaceHolder ph = (PlaceHolder)e.Item.FindControl("numeric");
int pageCount = GetPds().PageCount;
int curPage = GetPds().CurrentPageIndex + 1;
int startIndex = (curPage - 1) / 10 * 10 + 1;//根据当前页得到第一个页码
int endIndex = startIndex + 9;//显示10个页码
if (endIndex > pageCount)//判断是否为最后一页
{
endIndex = pageCount;
}
for (int i = startIndex; i <= endIndex; i++)//通过循环动态显示页码
{
var hl = new HyperLink { ID = "hl" + i, Text = "[" + i + "]", NavigateUrl = "?page=" + i };
ph.Controls.Add(i != curPage ? (Control)hl : new LiteralControl(i.ToString()));
ph.Controls.Add(new LiteralControl(" "));
}
}
}
}
如果朋友们对上面的代码有好的意见或建议，欢迎批评指正！大家共同进步！现提供完整源码给需要的朋友，下载地址：https://files.cnblogs.com/zhongnanmikky/PageTest.rar
