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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 234001 to 235000 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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