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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 295001 to 296000 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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