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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 292001 to 293000 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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