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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 236001 to 237000 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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