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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 239001 to 240000 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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