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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 213001 to 214000 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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