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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 235001 to 236000 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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