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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 212001 to 213000 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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