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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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