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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 207001 to 208000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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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