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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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