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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 293001 to 294000 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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