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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 277001 to 278000 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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