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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 294001 to 295000 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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