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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 231001 to 232000 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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