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Error in ajax with grid and dropdown

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Ajax

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

Hans asked on 05 May 2013, 01:45 AM

Hi
In Sharepoint 2010 I created a web part with a dropdown that contain a list of the month and based on the selection some data is shown in a grid. If I don't ajaxify it, it works well. When I work with ajax , if I select first time imediately after the page is shown a month with no data, it show the grid empty, when I select back to a month that has data I get this error
"
Microsoft JScript runtime error: Sys.ArgumentUndefinedException: Value cannot be undefined.
Parameter name: type
".

If imediately after the page is shown I select a month with data and then a month without data and then a month with data i have no erorrs.

How I can fix the error ?

Thank you !
Hans

The code is here:

<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>

<%@ Assembly Name="Microsoft.Web.CommandUI, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register Tagprefix="asp" Namespace="System.Web.UI" Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>

<%@ Import Namespace="Microsoft.SharePoint" %>

<%@ Register Tagprefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebPart_EstimatedFinalCostsUserControl.ascx.cs" Inherits="Project_EstimatedFinalCosts.WebPart_EstimatedFinalCosts.WebPart_EstimatedFinalCostsUserControl" %>

<%@ Register Assembly="Telerik.Web.UI, Version=2013.1.417.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4"

Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

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

DefaultLoadingPanelID="RadAjaxLoadingPanel1" >

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="RadGrid1">

<UpdatedControls>

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

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="RadDropDownYears">

<UpdatedControls>

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

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="RadDropDownMonths">

<UpdatedControls>

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

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="RadDropDownJobMaster">

<UpdatedControls>

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

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

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

<asp:Panel ID="Panel1" runat="server">

<table style="width: 500px;" >

<tr>

<td>

Current

</td>

<td>

<telerik:RadDropDownList ID="RadDropDownYears" runat="server" Skin="WebBlue" AutoPostBack="True" onselectedindexchanged="RadDropDownYears_SelectedIndexChanged">

</telerik:RadDropDownList>

</td>

<td>

<telerik:RadDropDownList ID="RadDropDownMonths" runat="server" Skin="WebBlue" AutoPostBack="True" onselectedindexchanged="RadDropDownMonths_SelectedIndexChanged">

</telerik:RadDropDownList>

</td>

<td>

<telerik:RadDropDownList ID="RadDropDownJobMaster" runat="server" Skin="WebBlue" AutoPostBack="True" onselectedindexchanged="RadDropDownJobMaster_SelectedIndexChanged" DropDownWidth="500px" DropDownHeight="200px" EnableVirtualScrolling="true">

<ItemTemplate>

<table>

<tr>

<td style="width: 10%">

<%# DataBinder.Eval(Container.DataItem, "JobNo")%>

</td>

<td style="width: 80%">

<%# DataBinder.Eval(Container.DataItem, "JobName")%>

</td>

<td style="width: 10%">

<%# DataBinder.Eval(Container.DataItem, "JobStatus")%>

</td>

</tr>

</table>

</ItemTemplate>

</telerik:RadDropDownList>

</td>

</tr>

</table>

</asp:Panel>

<br />

<telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateColumns="False"

CellSpacing="0" GridLines="None" AllowFilteringByColumn="True"

AllowPaging="True" AllowSorting="True" AutoGenerateEditColumn="True" OnUpdateCommand="RadGrid1_UpdateCommand"

OnNeedDataSource="RadGrid1_NeedDataSource" Skin="WebBlue" ShowStatusBar="true" >

<ClientSettings>

<Selecting AllowRowSelect="True" />

</ClientSettings>

<MasterTableView EditMode="EditForms" DataKeyNames="EFCId" CommandItemDisplay="Top" InsertItemPageIndexAction="ShowItemOnCurrentPage" GridLines="None" TableLayout="Auto">

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

<Columns>

<telerik:GridTemplateColumn HeaderText="Year" ItemStyle-Width="100px">

<ItemTemplate >

<%#DataBinder.Eval(Container.DataItem, "Year")%>

</ItemTemplate>

<EditItemTemplate>

<telerik:RadComboBox runat="server" ID="RadComboBox1" EnableLoadOnDemand="True" OnItemsRequested="RadComboBox1_ItemsRequested"

DataTextField="YearNo" DataValueField="YearNo" Text='<%#DataBinder.Eval(Container.DataItem,"Year")%>' Skin="WebBlue"

MarkFirstMatch="True" >

</telerik:RadComboBox>

</EditItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridBoundColumn AutoPostBackOnFilter="true" CurrentFilterFunction="Contains"

DataField="JobNo" ForceExtractValue="Always" HeaderText="Job No"

SortExpression="JobNo" ItemStyle-Width="120px">

<HeaderStyle Width="120px" />

<ItemStyle Width="120px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn AutoPostBackOnFilter="true" CurrentFilterFunction="Contains"

DataField="JobName" HeaderText="Job Name" SortExpression="JobName" ItemStyle-Width="500px">

<HeaderStyle Width="500px" />

<ItemStyle Width="500px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn AllowFiltering="false"

DataField="EFCAmount" HeaderText="EFC Amount" SortExpression="EFCAmount" ItemStyle-Width="100px">

<HeaderStyle Width="100px" />

<ItemStyle Width="100px" />

</telerik:GridBoundColumn>

</Columns>

<RowIndicatorColumn FilterControlAltText="Filter RowIndicator column">

<HeaderStyle Width="20px"></HeaderStyle>

</RowIndicatorColumn>

<ExpandCollapseColumn Visible="True"

FilterControlAltText="Filter ExpandColumn column" Created="True">

<HeaderStyle Width="20px"></HeaderStyle>

</ExpandCollapseColumn>

<EditFormSettings>

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

</EditFormSettings>

<PagerStyle PageSizeControlType="RadComboBox"></PagerStyle>

</MasterTableView>

<PagerStyle PageSizeControlType="RadComboBox"></PagerStyle>

<FilterMenu EnableTheming="True">

<CollapseAnimation Duration="200" Type="OutQuint"></CollapseAnimation>

</FilterMenu>

</telerik:RadGrid>

and here it is the c#

using System;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Collections.Generic;

using System.Linq;

using Project_SqlDataLibrary;

using Microsoft.SharePoint.Administration;

using Telerik.Web.UI;

using System.Collections;

namespace Project_EstimatedFinalCosts.WebPart_EstimatedFinalCosts

{

public partial class WebPart_EstimatedFinalCostsUserControl : UserControl

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

LoadAndConfigureYearData();

LoadAndConfigureMonthData();

LoadAndConfigureActiveJobData();

}

private void LoadAndConfigureActiveJobData()

{

try

{

int year = RadDropDownYears.SelectedValue == null ? DateTime.Now.Year : Convert.ToInt32(RadDropDownYears.SelectedValue);

int month = RadDropDownMonths.SelectedValue == null ? DateTime.Now.Month : Convert.ToInt32(RadDropDownMonths.SelectedValue);

IEnumerable<EFC_JobMaster> list = SQL_EFC.GetAll_ActiveJobList(year,month,true);

RadDropDownJobMaster.DataSource = list;

RadDropDownJobMaster.DataTextField = "JobName";

RadDropDownJobMaster.DataValueField = "JobNo";

RadDropDownYears.SelectedValue = "0";

RadDropDownJobMaster.DataBind();

}

catch (Exception ex)

{

SPDiagnosticsService.Local.WriteTrace(0, new SPDiagnosticsCategory("Autoreportlinks error: ", TraceSeverity.Unexpected, EventSeverity.Error), TraceSeverity.Unexpected, ex.Message, ex.StackTrace);

}

private void LoadAndConfigureYearData()

{

try

{

IEnumerable<Year> list = SQL_Misc.GetAll_YearsList();

int index = list.FirstOrDefault(x => x.CurrentWorkYear == true).YearNo;

RadDropDownYears.DataSource = list;

RadDropDownYears.DataTextField = "YearNo";

RadDropDownYears.DataValueField = "YearNo";

RadDropDownYears.SelectedValue = index.ToString().Trim();

RadDropDownYears.DataBind();

}

catch (Exception ex)

{

}

private void LoadAndConfigureMonthData()

{

try

{

IEnumerable<Month> list = SQL_Misc.GetAll_MonthsList();

RadDropDownMonths.DataSource = list;

RadDropDownMonths.DataTextField = "MonthName";

RadDropDownMonths.DataValueField = "MonthNo";

int curMonth = DateTime.Now.Month;

if (curMonth == 1)

curMonth = 12;

else

curMonth--;

RadDropDownMonths.SelectedValue = curMonth.ToString().Trim();

RadDropDownMonths.DataBind();

}

catch (Exception ex)

{

}

#region "Events"

protected void RadGrid1_UpdateCommand(object source, GridCommandEventArgs e)

{

var editableItem = ((GridEditableItem)e.Item);

var efcId = (int)editableItem.GetDataKeyValue("EFCId"); //you have the primary key value to required for update

//get the value of the combobox

GridEditFormItem formItem = e.Item as GridEditFormItem;

var x = formItem.FindControl("RadComboBox1");

RadComboBox dd = x as RadComboBox;

int comboVal = Convert.ToInt32(dd.SelectedValue);

////this gets the other values from text input in values variable

Hashtable values = new Hashtable();

editableItem.ExtractValues(values);

}

protected void RadGrid1_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)

{

try

{

int year = RadDropDownYears.SelectedValue == null ? DateTime.Now.Year : Convert.ToInt32(RadDropDownYears.SelectedValue);

int month = RadDropDownMonths.SelectedValue == null ? DateTime.Now.Month : Convert.ToInt32(RadDropDownMonths.SelectedValue);

string jobno = String.Empty;

RadGrid1.DataSource = SQL_EFC.GetAll_List(year, month, jobno);

}

catch (Exception ex)

{

}

protected void RadDropDownJobMaster_SelectedIndexChanged(object sender, DropDownListEventArgs e)

{

try

{

RadGrid1.Rebind();

}

catch (Exception ex)

{

}

protected void RadDropDownYears_SelectedIndexChanged(object sender, DropDownListEventArgs e)

{

try

{

RadGrid1.Rebind();

}

catch (Exception ex)

{

}

protected void RadDropDownMonths_SelectedIndexChanged(object sender, DropDownListEventArgs e)

{

try

{

RadGrid1.Rebind();

}

catch (Exception ex)

{

}

protected void RadComboBox1_ItemsRequested(object sender, RadComboBoxItemsRequestedEventArgs e)

{

RadComboBox comboBox = (RadComboBox)sender;

comboBox.Items.Clear();

IEnumerable<Year> list = SQL_Misc.GetAll_YearsList();

comboBox.DataSource = list;

//comboBox.DataTextField = "YearNo";

//comboBox.DataValueField = "YearNo";

comboBox.DataBind();

}

#endregion

}

3 Answers, 1 is accepted

Accepted

answered on 13 May 2013, 03:20 PM

AjaxVisualWebPart.zip

Hi Hans,

That's good - I am attaching a small sample that demonstrates how to ajaxify the web part controls. Please, do the ajaxification as shown in it.

Greetings, Tsvetoslav
the Telerik team

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