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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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