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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 200001 to 201000 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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