The ListView is displaying properly and the DataPager is displaying the buttons at the bottom, but when I click the NEXT button, the DataPager is not going to the next page of data.
ASPX page:
<div id="EventListing">
<asp:ListView ID="ListEvents" runat="server">
<LayoutTemplate>
<div ID="itemPlaceholder" runat="server">
</div>
<div id="pagerFormat">
<asp:DataPager ID="ListingDataPager" runat="server" PageSize="5" PagedControlID="ListEvents" QueryStringField="page" >
<Fields>
<asp:NextPreviousPagerField
FirstPageText="First"
LastPageText="Last"
NextPageText="Next"
PreviousPageText="Back" />
</Fields>
</asp:DataPager>
</div>
</LayoutTemplate>
<ItemTemplate>
<table id="tblEvents">
<tr>
<td rowspan="4" id="Col1Events"></td>
<td rowspan="4" id="Col2Events"></td>
<td rowspan="4" id="Col3Events"></td>
<td class="tdEvents"><span style="font-weight:bold; font-size: 1em;"><%#Eval("EVENT_DATERANGE") %>: <%#Eval("EVENT_NAME") %></span></td>
</tr>
<tr>
<td class="tdEvents"> <span style="font-size: .9em;"><%#Eval("EVENT_DESC") %></span></td>
</tr>
<tr>
<td class="tdEvents"><span style="font-size: .9em;"><%#Eval("EVENT_STREET") %>, <%#Eval("CITY.CITY_NAME") %></span></td>
</tr>
<tr>
<td class="tdEvents"><span style="font-size: .9em;"><%#Eval("EVENT_PHONE") %></span></td>
</tr>
<tr>
<td colspan="4" id="tdEmpty"></td>
</tr>
</table>
</ItemTemplate>
</asp:ListView>
</div>
Code Behind Page:
protected void btnFindEvents_Click(object sender, EventArgs e)
{
DateTime StartDt;
string EventType = ddlEventType.SelectedValue;
string dt = Request.Form["DatePickername"];
if (ddlEventType.SelectedIndex == 0)
{
EventType = "";
}
if (dt != "")
{
StartDt = Convert.ToDateTime(Request.Form["DatePickerName"]);
}
else
{
StartDt = DateTime.Now;
}
string CityName= ddlEventCity.SelectedValue;
if (ddlEventCity.SelectedIndex == 0)
{
CityName = "";
}
if ((ddlEventType.SelectedIndex == 0) && (ddlEventCity.SelectedIndex == 0))
{
//(1) ALL EVENTS
BLgetEvents obj = new BLgetEvents();
var EventList = obj.getAllEvents(StartDt);
ListEvents.DataSource = EventList;
ListEvents.DataBind();
}
}
Best Answer
you have to bind data again on the ListView when you page by DataPager. So, you need to implement this bind on
PagePropertiesChanging
event of your ListView control. Something like:And on your asp.net webform, you need to set the event on the listview tag:
When you set the datasource from code behine, the same principle is valid for other databound controls like GridView, DataList, Repeater etc (you need to bind again on some paging event). An alternative way to solve this, you could add a datasource control (like objectdatasource, linqdatasource, etc...) and set it on the ListView's
DataSourceID
property and the DataPager will work automatically.For more details, look at this link: http://weblogs.asp.net/hajan/archive/2011/09/08/paging-listview-using-datapager-without-using-datasource-control.aspx