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RadGrid and LinqToSQL

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Grid

This is a migrated thread and some comments may be shown as answers.

Rick asked on 08 May 2012, 07:58 PM

I am using MS Visual Studio 2010 in a 3.5 environment.
I am using Microsoft Vista (32 bit)
The database is currently located on an SQL 2005 server.
I am using RadGrid & tools, version 2012.1.411.35
I am using both Chrome (18.0.1025.168) and Internet Explorer (8.0.7600.16385)
I am programming in VB.net

I'll preface this with the fact that I don't really know anything about LinqToSql. I am trying to follow instructions online, but most always assume the reader knows more than I do.

I have an SQL database of 215,000 records that I loaded in a RadGrid with an ASP SqlDataSource. This was slow to load, filter, sort, and go to the next or previous page.

I came across the article Grid / 300 000 Rows with LINQ and tried to implement this and eventually I did. The data loads and I can do everything I did in the original setup. It is still slow except for filtering which is pretty quick. Nothing works fast like the demo on the page I linked above.

Also, the code sets the TotalRowCount to 300000, so even if it's filtered to 10 items, there are still loads of pages to page through which is odd.

I also attempted to apply the solutions located here Grid / Custom Paging, but again, it assumes the reader knows more than I do. It also uses demo files and whatnot, so I've been unable to get it working for me.

Basically, I want to speed this up. I'd like to get the LinqToSQL working properly.

The HTML for my page is:

<telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="RadGrid1">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadGrid1" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Skin="Default"></telerik:RadAjaxLoadingPanel>

<br />

<telerik:RadGrid ID="RadGrid1"

AutoGenerateColumns="False" runat="server" DataSourceID="LinqDataSource1" AllowFilteringByColumn="True"

AllowPaging="True" AllowSorting="True" ShowGroupPanel="True"

CellSpacing="0" GridLines="None">

<PagerStyle Mode="NextPrevAndNumeric" />

<GroupingSettings CaseSensitive="false" />

<MasterTableView TableLayout="Fixed">

<CommandItemSettings ExportToPdfText="Export to PDF"></CommandItemSettings>

<RowIndicatorColumn Visible="True" FilterControlAltText="Filter RowIndicator column"></RowIndicatorColumn>

<ExpandCollapseColumn Visible="True" FilterControlAltText="Filter ExpandColumn column"></ExpandCollapseColumn>

<Columns>

<telerik:GridBoundColumn DataField="FilePath"

FilterControlAltText="Filter FilePath column" HeaderText="FilePath"

ReadOnly="True" SortExpression="FilePath" UniqueName="FilePath">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ProjectID"

FilterControlAltText="Filter ProjectID column" HeaderText="ProjectID"

ReadOnly="True" SortExpression="ProjectID" UniqueName="ProjectID">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Category"

FilterControlAltText="Filter Category column" HeaderText="Category"

ReadOnly="True" SortExpression="Category" UniqueName="Category">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ProjectName"

FilterControlAltText="Filter ProjectName column" HeaderText="ProjectName"

ReadOnly="True" SortExpression="ProjectName" UniqueName="ProjectName">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ProjCoreTitle"

FilterControlAltText="Filter ProjCoreTitle column" HeaderText="ProjCoreTitle"

ReadOnly="True" SortExpression="ProjCoreTitle" UniqueName="ProjCoreTitle">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="DrawingNumber"

FilterControlAltText="Filter DrawingNumber column" HeaderText="DrawingNumber"

ReadOnly="True" SortExpression="DrawingNumber" UniqueName="DrawingNumber">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="DrawingTitle"

FilterControlAltText="Filter DrawingTitle column" HeaderText="DrawingTitle"

ReadOnly="True" SortExpression="DrawingTitle" UniqueName="DrawingTitle">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Description"

FilterControlAltText="Filter Description column" HeaderText="Description"

ReadOnly="True" SortExpression="Description" UniqueName="Description">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="DrawingDate" DataType="System.DateTime"

FilterControlAltText="Filter DrawingDate column" HeaderText="DrawingDate"

ReadOnly="True" SortExpression="DrawingDate" UniqueName="DrawingDate">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="RecordCreated" DataType="System.DateTime"

FilterControlAltText="Filter RecordCreated column" HeaderText="RecordCreated"

ReadOnly="True" SortExpression="RecordCreated" UniqueName="RecordCreated">

</telerik:GridBoundColumn>

</Columns>

<EditFormSettings>

<EditColumn FilterControlAltText="Filter EditCommandColumn column"></EditColumn>

</EditFormSettings>

</MasterTableView>

<ClientSettings AllowDragToGroup="true"></ClientSettings>

<FilterMenu EnableImageSprites="False"></FilterMenu>

</telerik:RadGrid>

<asp:LinqDataSource ID="LinqDataSource1"

AutoPage="False" runat="server" ContextTypeName="ScanBrowser.ScanBrowserContext.ScanBrowserContext"

TableName="BrowserGridTBL"

Select=

"new (FilePath, ProjectID, Category, ProjectName, ProjCoreTitle, DrawingNumber, DrawingTitle, Description, DrawingDate, RecordCreated)"

>

</asp:LinqDataSource>

And the VB code behind that:

Imports Telerik.Web.UI

Imports System.Linq

Imports System.Diagnostics

Public Class WebForm2

Inherits System.Web.UI.Page

Protected Sub LinqDataSource1_Selected(sender As Object, e As System.Web.UI.WebControls.LinqDataSourceStatusEventArgs) Handles LinqDataSource1.Selected

If Not Cache("MyData") Is Nothing AndAlso Not e.Result Is Nothing Then

Cache("MyData") = e.Result

End If

End Sub

Protected Sub LinqDataSource1_Selecting(sender As Object, e As System.Web.UI.WebControls.LinqDataSourceSelectEventArgs) Handles LinqDataSource1.Selecting

e.Arguments.TotalRowCount = 300000

If Not Cache("MyData") Is Nothing Then

e.Result = Cache("MyData")

End If

End Sub

Protected Sub RadAjaxManager1_AjaxSettingCreating(sender As Object, e As Telerik.Web.UI.AjaxSettingCreatingEventArgs) Handles RadAjaxManager1.AjaxSettingCreating

If Not e.Updated Is RadGrid1 Then

e.UpdatePanel.RenderMode = UpdatePanelRenderMode.Inline

End If

End Sub

End Class

Thank you for your assistance,

Rick

PS - Please have patience. You may need to step me through some of the stuff that may be simple to you. :)

RadGrid and LinqToSQL

5 Answers, 1 is accepted