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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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