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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 292001 to 293000 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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