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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 167001 to 168000 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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