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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 207001 to 208000 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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