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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 206001 to 207000 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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