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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 292001 to 293000 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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