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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 191001 to 192000 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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