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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 264001 to 265000 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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