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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 293001 to 294000 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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