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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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