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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 209001 to 210000 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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