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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 174001 to 175000 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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