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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 184001 to 185000 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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