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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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