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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 284001 to 285000 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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