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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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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