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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 166001 to 167000 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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