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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accountant	Jaime Yorres	England	1 2 3 4 5
2	Sales Associate	Pascale Cartrain	England	1 2 3 4 5
3	Marketing Assistant	Howard Snyder	Brazil	1 2 3 4 5
4	Owner	Jaime Yorres	England	1 2 3 4 5
5	Owner	Matti Karttunen	Germany	1 2 3 4 5
6	Sales Associate	Howard Snyder	Germany	1 2 3 4 5
7	Accountant	Hanna Moos	Germany	1 2 3 4 5
8	Sales Consultant	Pascale Cartrain	England	1 2 3 4 5
9	Sales Representative	Pascale Cartrain	Argentina	1 2 3 4 5
10	Sales Representative	Antonio Moreno	France	1 2 3 4 5
11	Sales Agent	Elizabeth Lincoln	Austria	1 2 3 4 5
12	Accountant	Paul Henriot	Italy	1 2 3 4 5
13	Sales Consultant	Matti Karttunen	Germany	1 2 3 4 5
14	Sales Associate	Pascale Cartrain	Spain	1 2 3 4 5
15	Sales Manager	Antonio Moreno	Spain	1 2 3 4 5
16	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
17	Sales Associate	Hanna Moos	USA	1 2 3 4 5
18	Sales Associate	Jaime Yorres	Italy	1 2 3 4 5
19	Sales Agent	Elizabeth Lincoln	Italy	1 2 3 4 5
20	Sales Consultant	Georg Pipps	England	1 2 3 4 5
21	Sales Consultant	Matti Karttunen	Germany	1 2 3 4 5
22	Sales Consultant	Paul Henriot	Italy	1 2 3 4 5
23	Owner	Patricio Simpson	Bulgaria	1 2 3 4 5
24	Sales Consultant	Matti Karttunen	Austria	1 2 3 4 5
25	Sales Representative	Paul Henriot	Brazil	1 2 3 4 5
26	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
27	Sales Representative	Jaime Yorres	Spain	1 2 3 4 5
28	Accountant	Georg Pipps	Bulgaria	1 2 3 4 5
29	Sales Representative	Antonio Moreno	Brazil	1 2 3 4 5
30	Sales Representative	Matti Karttunen	Argentina	1 2 3 4 5
31	Sales Manager	Georg Pipps	Austria	1 2 3 4 5
32	Sales Representative	Patricio Simpson	France	1 2 3 4 5
33	Sales Consultant	Patricio Simpson	France	1 2 3 4 5
34	Accounting Manager	Pascale Cartrain	USA	1 2 3 4 5
35	Sales Consultant	Jaime Yorres	Argentina	1 2 3 4 5
36	Sales Associate	Elizabeth Lincoln	USA	1 2 3 4 5
37	Sales Representative	Patricio Simpson	Germany	1 2 3 4 5
38	Owner	Georg Pipps	Argentina	1 2 3 4 5
39	Sales Representative	Paul Henriot	Austria	1 2 3 4 5
40	Accountant	Elizabeth Lincoln	USA	1 2 3 4 5
41	Sales Representative	Pascale Cartrain	France	1 2 3 4 5
42	Accounting Manager	Georg Pipps	France	1 2 3 4 5
43	Owner	Howard Snyder	England	1 2 3 4 5
44	Sales Manager	Howard Snyder	Italy	1 2 3 4 5
45	Accountant	Matti Karttunen	France	1 2 3 4 5
46	Accounting Manager	Matti Karttunen	Italy	1 2 3 4 5
47	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
48	Accountant	Paul Henriot	Italy	1 2 3 4 5
49	Sales Consultant	Patricio Simpson	Spain	1 2 3 4 5
50	Sales Consultant	Howard Snyder	Brazil	1 2 3 4 5
51	Accounting Manager	Pascale Cartrain	Spain	1 2 3 4 5
52	Marketing Manager	Howard Snyder	Spain	1 2 3 4 5
53	Accounting Manager	Howard Snyder	England	1 2 3 4 5
54	Accounting Manager	Patricio Simpson	Germany	1 2 3 4 5
55	Marketing Manager	Patricio Simpson	Germany	1 2 3 4 5
56	Accountant	Georg Pipps	Bulgaria	1 2 3 4 5
57	Accounting Manager	Paul Henriot	France	1 2 3 4 5
58	Sales Consultant	Georg Pipps	France	1 2 3 4 5
59	Sales Agent	Hanna Moos	England	1 2 3 4 5
60	Sales Agent	Hanna Moos	Germany	1 2 3 4 5
61	Marketing Assistant	Jaime Yorres	Brazil	1 2 3 4 5
62	Accounting Manager	Paul Henriot	Brazil	1 2 3 4 5
63	Sales Agent	Pascale Cartrain	Germany	1 2 3 4 5
64	Sales Consultant	Georg Pipps	Brazil	1 2 3 4 5
65	Accounting Manager	Hanna Moos	USA	1 2 3 4 5
66	Owner	Howard Snyder	France	1 2 3 4 5
67	Sales Associate	Hanna Moos	Bulgaria	1 2 3 4 5
68	Marketing Manager	Patricio Simpson	Spain	1 2 3 4 5
69	Owner	Antonio Moreno	Germany	1 2 3 4 5
70	Sales Agent	Elizabeth Lincoln	Brazil	1 2 3 4 5
71	Sales Agent	Georg Pipps	Brazil	1 2 3 4 5
72	Accounting Manager	Hanna Moos	Germany	1 2 3 4 5
73	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
74	Accountant	Matti Karttunen	Germany	1 2 3 4 5
75	Sales Representative	Paul Henriot	Bulgaria	1 2 3 4 5
76	Sales Manager	Antonio Moreno	Argentina	1 2 3 4 5
77	Accounting Manager	Paul Henriot	Argentina	1 2 3 4 5
78	Marketing Manager	Georg Pipps	USA	1 2 3 4 5
79	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
80	Sales Agent	Georg Pipps	USA	1 2 3 4 5
81	Owner	Antonio Moreno	USA	1 2 3 4 5
82	Sales Representative	Pascale Cartrain	Spain	1 2 3 4 5
83	Sales Manager	Matti Karttunen	Brazil	1 2 3 4 5
84	Marketing Assistant	Patricio Simpson	Spain	1 2 3 4 5
85	Sales Representative	Paul Henriot	Bulgaria	1 2 3 4 5
86	Sales Representative	Georg Pipps	France	1 2 3 4 5
87	Accountant	Antonio Moreno	Austria	1 2 3 4 5
88	Sales Consultant	Paul Henriot	Germany	1 2 3 4 5
89	Accountant	Hanna Moos	Argentina	1 2 3 4 5
90	Accounting Manager	Howard Snyder	Austria	1 2 3 4 5
91	Accountant	Matti Karttunen	France	1 2 3 4 5
92	Sales Representative	Antonio Moreno	England	1 2 3 4 5
93	Sales Consultant	Georg Pipps	Brazil	1 2 3 4 5
94	Sales Consultant	Paul Henriot	Argentina	1 2 3 4 5
95	Accountant	Pascale Cartrain	Brazil	1 2 3 4 5
96	Sales Agent	Georg Pipps	Italy	1 2 3 4 5
97	Sales Representative	Howard Snyder	Argentina	1 2 3 4 5
98	Owner	Paul Henriot	Argentina	1 2 3 4 5
99	Accountant	Howard Snyder	England	1 2 3 4 5
100	Sales Consultant	Patricio Simpson	England	1 2 3 4 5


...291 292 293 294 295 296 297 298 299 300 Item 294001 to 295000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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