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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 216001 to 217000 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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