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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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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