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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 299001 to 300000 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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