asp .net中的datalist分页 [英] datalist paging in asp .net
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问题描述
嗨
我想要使用Entity Framework来设置数据列表，但结果只是查看一页：
这是我的代码：
testEntities context = new testEntities（）;
受保护 void Page_Load（ object sender，EventArgs e）
{
if （！IsPostBack）
{
BindDataList（ 10 ， 0 ）;
}
else
{
PlaceHolder1.Controls.Clear（）;
CreatePagingControl（）;
}
}
私有 int RowCount
{
get
{
return （ int ）ViewState [ RowCount];
}
set
{
ViewState [ RowCount] = value ;
}
}
私有 void BindDataList（ int take， int pageSize）
{
var query =（ from p in context.testTBL < span class =code-sdkkeyword> orderby p.testID select p）.Take（take）.Skip（pageSize）.ToList（）;
PagedDataSource page = new PagedDataSource（）;
page.AllowCustomPaging = true ;
page.AllowPaging = true ;
page.DataSource = query;
page.PageSize = 3 ;
DataList1.DataSource = page;
DataList1.DataBind（）;
if （！IsPostBack）
{
RowCount = query.Count;
CreatePagingControl（）;
}
}
私有 void CreatePagingControl（ ）
{
for （ int i = 0 ; i < （RowCount / 10 ）+ 1 ; i ++）
{
LinkButton lnk = new LinkButton（）;
lnk.Click + = new EventHandler（lbl_Click）;
lnk.ID = lnkPage +（i + 1 ）的ToString（）;
lnk.Text =（i + 1 ）。ToString（）;
PlaceHolder1.Controls.Add（lnk）;
Label spacer = new Label（）;
spacer.Text = ;
PlaceHolder1.Controls.Add（spacer）;
}
}
void lbl_Click（ object sender，EventArgs e ）
{
LinkButton lnk = sender as LinkButton;
int currentPage = int .Parse（lnk.Text）;
int take = currentPage * 10 ;
int skip = currentPage == 1 ？ 0 ：take - 10 ;
BindDataList（take，skip）;这是HTML代码：
b $ b < div >
< asp：DataList ID = DataList1 runat = server >
< ItemTemplate >
< ％ #Eval（ testID）％>
< / ItemTemplate >
< / asp：DataList >
< asp：PlaceHolder ID = PlaceHolder1 runat = < span class =code-keyword> server
> < / asp：PlaceHolder >
< / div >
这是输出：
< img src =http://upload.tehran98.com/img1/51wdlucih589qjbr42ke_thumb.pngborder =0alt =51wdlucih589qjbr42ke.png/>
请帮帮我!!!谢谢
解决方案
嗨：
我认为你丢失了你的页码。所以尽量保留隐藏的项目或会话值这个NumberPage，因为pageNumbe是相同的值是可以的
Hi
I want pagging datalist with use Entity Framework but the result is just view one page :
This is my code :
testEntities context=new testEntities();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindDataList(10, 0);
}
else
{
PlaceHolder1.Controls.Clear();
CreatePagingControl();
}
}
private int RowCount
{
get
{
return (int)ViewState["RowCount"];
}
set
{
ViewState["RowCount"] = value;
}
}
private void BindDataList(int take, int pageSize)
{
var query = (from p in context.testTBL orderby p.testID select p).Take(take).Skip(pageSize).ToList();
PagedDataSource page = new PagedDataSource();
page.AllowCustomPaging = true;
page.AllowPaging = true;
page.DataSource = query;
page.PageSize = 3;
DataList1.DataSource = page;
DataList1.DataBind();
if (!IsPostBack)
{
RowCount = query.Count;
CreatePagingControl();
}
}
private void CreatePagingControl()
{
for (int i = 0; i < (RowCount / 10) + 1; i++)
{
LinkButton lnk = new LinkButton();
lnk.Click += new EventHandler(lbl_Click);
lnk.ID = "lnkPage" + (i + 1).ToString();
lnk.Text = (i + 1).ToString();
PlaceHolder1.Controls.Add(lnk);
Label spacer = new Label();
spacer.Text = " ";
PlaceHolder1.Controls.Add(spacer);
}
}
void lbl_Click(object sender, EventArgs e)
{
LinkButton lnk = sender as LinkButton;
int currentPage = int.Parse(lnk.Text);
int take = currentPage * 10;
int skip = currentPage == 1 ? 0 : take - 10;
BindDataList(take, skip);
}
this is HTML code :
<div>
<asp:DataList ID="DataList1" runat="server">
<ItemTemplate>
<%# Eval("testID")%>
</ItemTemplate>
</asp:DataList>
<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
</div>
And this is Output :
<img src="http://upload.tehran98.com/img1/51wdlucih589qjbr42ke_thumb.png" border="0" alt="51wdlucih589qjbr42ke.png" />
Please help me !!! thanks
解决方案
Hi:
I think that your lose your Page Number. So try to keep in hidden item or session value this NumberPage, becouse is posible that the pageNumbe is the same value
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