Hi,
We're using your RadFileExplorer as imagepicker in our software and are trying to improve the performance of it.
Some users don't sort their images into subfolders but puts all of their images in the root folder, with results high performance drop when not using pager with more than 2000 images in one folder (especially with slow internet connections).
Without pager: 20 seconds until 2 minutes to load
With pager: 5 until 10 seconds to load
But still very slow, we're targeting to 2~3 seconds (maximal).
It seems the thumbnail mode don't caches the generated views because the performance difference between grid and thumbnail modes is very huge, after first load as well. The grid mode seems loads within 1,5 seconds which thumbnail mode takes 5 until 10 seconds.
How we can improve the performance of the FileExplorer with thumbnail mode?

<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title></title> <telerik:RadStyleSheetManager id="RadStyleSheetManager1" runat="server" /></head><body> <form id="form1" runat="server"> <telerik:RadScriptManager ID="RadScriptManager1" runat="server" EnableCdn="true" EnableEmbeddedjQuery="false" > <Scripts> <telerik:RadScriptReference Name="jquery" /> <telerik:RadScriptReference Name="jquery-ui" /> </Scripts> </telerik:RadScriptManager> <div> </div> <asp:Login ID="Login1" runat="server"></asp:Login> </form></body></html><?xml version="1.0"?><configuration> <appSettings> <add key="Telerik.Skin" value="Silk"/> <add key="Telerik.ScriptManager.TelerikCdn" value="Enabled"/> <add key="Telerik.StyleSheetManager.TelerikCdn" value="Enabled"/> </appSettings> <system.web> <compilation debug="true" targetFramework="4.5"/> <httpRuntime targetFramework="4.5"/> <pages> <controls> <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI"/> </controls> </pages> <httpHandlers> <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false"/> <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false"/> <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false"/> <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false"/> <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false"/> </httpHandlers> <httpModules> <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule"/> <add name="RadCompression" type="Telerik.Web.UI.RadCompression"/> </httpModules> </system.web> <system.webServer> <validation validateIntegratedModeConfiguration="false"/> <modules runAllManagedModulesForAllRequests="true"> <remove name="RadUploadModule"/> <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode"/> <remove name="RadCompression"/> <add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode"/> </modules> <handlers> <remove name="ChartImage_axd"/> <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode"/> <remove name="Telerik_Web_UI_SpellCheckHandler_axd"/> <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode"/> <remove name="Telerik_Web_UI_DialogHandler_aspx"/> <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode"/> <remove name="Telerik_RadUploadProgressHandler_ashx"/> <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode"/> <remove name="Telerik_Web_UI_WebResource_axd"/> <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode"/> </handlers> </system.webServer></configuration><%@ Application Language="C#" %><script runat="server"> void Application_Start(object sender, EventArgs e) { // Code that runs on application startup string jqueryversion = "1.10.2"; ScriptManager.ScriptResourceMapping.AddDefinition("jquery", new ScriptResourceDefinition { CdnSupportsSecureConnection = true, Path = "~/javascript/jquery-" + jqueryversion + ".min.js", DebugPath = "~/javascript/jquery-" + jqueryversion + ".min.js", CdnPath = "//ajax.aspnetcdn.com/ajax/jquery/jquery-" + jqueryversion + ".min.js", CdnDebugPath = "//ajax.aspnetcdn.com/ajax/jquery/jquery-" + jqueryversion + ".js" }); string jqueryuiversion = "1.9.2"; ScriptManager.ScriptResourceMapping.AddDefinition("jquery-ui", new ScriptResourceDefinition { CdnSupportsSecureConnection = true, Path = "~/javascript/jquery-ui-" + jqueryuiversion + ".min.js", DebugPath = "~/javascript/jquery-ui-" + jqueryuiversion + ".min.js", CdnPath = "//ajax.aspnetcdn.com/ajax/jquery.ui/" + jqueryuiversion + "/jquery-ui.min.js", CdnDebugPath = "//ajax.aspnetcdn.com/ajax/jquery.ui/" + jqueryuiversion + "/jquery-ui.js" }); } void Application_End(object sender, EventArgs e) { // Code that runs on application shutdown } void Application_Error(object sender, EventArgs e) { // Code that runs when an unhandled error occurs } void Session_Start(object sender, EventArgs e) { // Code that runs when a new session is started } void Session_End(object sender, EventArgs e) { // Code that runs when a session ends. // Note: The Session_End event is raised only when the sessionstate mode // is set to InProc in the Web.config file. If session mode is set to StateServer // or SQLServer, the event is not raised. } </script>Hi,
I have a RadGrid that opens inside of a RadWindow. The user can re-order the rows by drag and drop, but if the grid is longer than the height of the RadWindow, it does not scroll. Is there a way to scroll the RadWindow as the user is moving the item down the list?

We would like to set the width of columns in xlsx export from a RadGrid. I do this by using e.ExportStructure.Tables[0].Columns in the InfrastructureExporting event handler. If columns are declaratively set in the aspx file when this works fine.
If, however, the columns of the RadGrid are added by setting AutoGenerateColumns="true" or manually in Page_Load, then the Columns collection is empty. Why is this, and are there some other way to set the width of the columns in the xlsx file?
ASPX:
<telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateColumns="true" OnNeedDataSource="RadGrid1_NeedDataSource" OnInfrastructureExporting="RadGrid1_InfrastructureExporting">
<ExportSettings Excel-Format="Xlsx" />
</telerik:RadGrid>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" />
.cs:
public class Person
{
public string ID { get; set; }
public string Name { get; set; }
public DateTime? Date { get; set; }
}
protected void RadGrid1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
RadGrid1.DataSource = new List<Person> {
new Person { ID = "1", Name = "Adam", Date = new DateTime(1973, 4, 12) },
new Person { ID = "2", Name = "Bertil", Date = null },
new Person { ID = "3", Name = "Ceasar", Date = new DateTime(1973, 10, 27) },
};
}
protected void Button1_Click(object sender, EventArgs e)
{
RadGrid1.MasterTableView.ExportToExcel();
}
protected void RadGrid1_InfrastructureExporting(object sender, Telerik.Web.UI.GridInfrastructureExportingEventArgs e)
{
e.ExportStructure.ColumnWidthUnit = Telerik.Web.UI.ExportInfrastructure.ExportUnitType.FormatDefault;
// ERROR: The Columns collection is empty if the columns of radgrid are auto-generated or dynamically added in code behind
foreach (var col in e.ExportStructure.Tables[0].Columns)
{
col.Width = 20;
}
}
/Patrik
I have a chart with about 1500 items and a period from December 2014 to today. if I were in the navigator the range selector move he always jumps by 1 month. this can be set the range of the selector can be moved per day?
Also me the entire period shown on the left outside of the navigator and the right I can not choose to this day (show Attachment)...
Can you help me? Thanks
Hello dear friends.
There are combo box to "Checkbox" feature, how to get the name of the selected items?
With my 100 Russian rubles for beer)

Hi,
I have issue with editmode, When I use automatic update works great, but I want use my template to edit, and when I use usercontrol they don;t update my data, they put empty string to it. Below my code, thanks for any feedback.
Index.aspx
<asp:SqlDataSource ID="ListaRejestr" runat="server" ConnectionString="<%$ ConnectionStrings:ISAConnectionString2 %>" UpdateCommand="UPDATE tb_upowaznienSystem SET data_wydania = @data_wydania WHERE nr_upowaznienia = @nr_upowaznienia" SelectCommand="lista_uzytkownikow" SelectCommandType="StoredProcedure"> <SelectParameters> <asp:SessionParameter Name="iduzytkownika" SessionField="id_komorki" DefaultValue="" /> <asp:ControlParameter ControlID="drop_rejestrSytem" Name="systemDrop" PropertyName="SelectedValue" /> <asp:SessionParameter Name="CzySystemOgolny" SessionField="CzySystemOgolny" Type="String" /> <asp:SessionParameter DefaultValue="" Name="administrator_systemu" SessionField="administrator_systemu" Type="String" /> </SelectParameters> <UpdateParameters> <asp:Parameter Name="data_wydania" /> <asp:Parameter Name="nr_upowaznienia" /> </UpdateParameters> </asp:SqlDataSource> <br /> <telerik:RadGrid ID="RadGrid1" runat="server" AllowFilteringByColumn="True" AllowPaging="True" AllowSorting="True" Culture="pl-PL" DataSourceID="ListaRejestr" GroupPanelPosition="Top" AllowAutomaticUpdates="True" AutoGenerateColumns="False" > <GroupingSettings CollapseAllTooltip="Collapse all groups" /> <ExportSettings> <Pdf PageWidth=""> </Pdf> </ExportSettings> <MasterTableView DataSourceID="ListaRejestr" AllowAutomaticUpdates="True" PageSize="20" ClientDataKeyNames="nr_upowaznienia" DataKeyNames="nr_upowaznienia"> <CommandItemSettings ShowAddNewRecordButton="False" /> <Columns> <telerik:GridEditCommandColumn CancelText="Anuluj" EditText="Data nadania" HeaderText="Data nadania" InsertText="Wyślij" UpdateText="Aktualizuj"> </telerik:GridEditCommandColumn> <telerik:GridBoundColumn DataField="id_upowaznieniaSystem" FilterControlAltText="Filter column column" HeaderText="id_upowaznieniaSystem" UniqueName="column"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="nr_upowaznienia" FilterControlAltText="Filter column1 column" HeaderText="nr_upowaznienia" UniqueName="nr_upowaznienia"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="data_wydania" FilterControlAltText="Filter column2 column" HeaderText="data_wydania" UniqueName="data_wydania"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="data_cofniecia" FilterControlAltText="Filter column3 column" HeaderText="data_cofniecia" UniqueName="column3"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="system" FilterControlAltText="Filter column4 column" HeaderText="system" UniqueName="column4"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="zakres_upowaznienia" FilterControlAltText="Filter column5 column" HeaderText="zakres_upowaznienia" UniqueName="column5"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="nazwisko" FilterControlAltText="Filter column6 column" HeaderText="nazwisko" UniqueName="nazwisko"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="imie" FilterControlAltText="Filter column7 column" HeaderText="imie" UniqueName="column7"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="identyfikator" FilterControlAltText="Filter column8 column" HeaderText="identyfikator" UniqueName="column8"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="id_uzytkownik" FilterControlAltText="Filter column9 column" HeaderText="Upoważnienie ogólne" UniqueName="column9"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="nazwa_komorki" FilterControlAltText="Filter column10 column" HeaderText="nazwa_komorki" UniqueName="column10"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="nazwa_wydzialu" FilterControlAltText="Filter column11 column" HeaderText="nazwa_wydzialu" UniqueName="column11"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="stanowisko" FilterControlAltText="Filter column12 column" HeaderText="stanowisko" UniqueName="column12"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="nr_poprz" FilterControlAltText="Filter column13 column" HeaderText="nr_poprz" UniqueName="column13"> </telerik:GridBoundColumn> </Columns> <EditFormSettings UserControlName="data_wydania_form.ascx" EditFormType="WebUserControl"> <EditColumn FilterControlAltText="Filter EditCommandColumn1 column" UniqueName="EditCommandColumn1"> </EditColumn> </EditFormSettings> </MasterTableView> </telerik:RadGrid>data_wydania_form.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="data_wydania_form.ascx.cs" Inherits="data_wydania_form" %><%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %><table> <tr> <td> Data nadania: </td> </tr> <tr> <td> <asp:TextBox ID="data_wydania" DbSelectedDate='<%# DataBinder.Eval(Container, "DataItem.data_wydania") %>' runat="server" TabIndex="1"></asp:TextBox> </td> </tr> <tr> <td> <asp:Button ID="btnUpdate" Text="Aktualizuj" runat="server" CommandName="Update" CausesValidation="false"></asp:Button> <asp:Button ID="btnCancel" Text="Anuluj" runat="server" CausesValidation="False" CommandName="Cancel"></asp:Button> </td> </tr></table>
regards
Hi
The disabled class rfdInputDisabled is not getting applied in IE for checkbox.
I am using IE11 and Telerik version 2016.1.225.45.
The rfdInputDisabled class is applied in IE7 but not in IE11. Please see the attached images. Could you please help on this?
Below is my code
<body> <telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" Skin="Office2007" EnableRoundedCorners="false" /> <form id="form1" runat="server"> <telerik:RadScriptManager ID="RadScriptManager1" runat="server" AsyncPostBackTimeout="600" AllowCustomErrorsRedirect="true"> <Scripts> <asp:ScriptReference Name="Telerik.Web.UI.Common.Core.js" Assembly="Telerik.Web.UI" /> </Scripts> </telerik:RadScriptManager> <div> <asp:CheckBox ID="checkboxDis" runat="server" Text="Some Text" Enabled="false" TextAlign="Left" BorderColor="Black" /> </div> </form></body>