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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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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