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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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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