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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 204001 to 205000 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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