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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 202001 to 203000 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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Virtualization

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