How to get the name of failing RadComboBox sourced in declarative programmatic way

[Finwave Spa]

Hi,

I have a project whot lots of aspx pages, each one containing lot's of RadComboBoxes which are populated with declarative Data Sources :for each RadCombBox I define a certaing Object Data Source so to populate each RadComboBox whith proper items

let's consider a page in which I define:

1) the RadComboBox with rcbCDRATEINDEX ID,  which items are coming from odsTBRCFINPRICE_CDRATEINDEX Object Data Source calling the select method GetDataByCDCOMPANY
2) the RadComboBox with rcbCDrcbTPPLAN ID, which items are coming from odsTBRCFINPRICE_TPPLAN Object Data Source calling call the select method GetDataByCDCOMPANY_CUSTTYPE
3) the RadComboBox with rcbPER_SUG ID, which items are coming from odsTBRCFINPRICE_PER_SUG Object Data Source calling call the select method GetDataByCDCOMPANY_PER_SUG


<telerik:RadComboBox ID="rcbCDRATEINDEX" runat="server" DataSourceID="odsTBRCFINPRICE_CDRATEINDEX"
    DataTextField="DSRATEINDEX" DataValueField="CDRATEINDEX" Width="100%" OnClientSelectedIndexChanged="ClientRcbCDRATEINDEX_SelectedIndexChanged" />
<asp:ObjectDataSource ID="odsTBRCFINPRICE_CDRATEINDEX" runat="server"
    OldValuesParameterFormatString="original_{0}" SelectMethod="GetDataByCDCOMPANY"
    TypeName="DataAccessComponent.dsFinancialMarketAndRateTableAdapters.TCRATEINDEXTableAdapter">
    <SelectParameters>
        <asp:ControlParameter ControlID="hCDCOMPANY" DefaultValue="''" Name="CDCOMPANY" PropertyName="Value" Type="String" />
    </SelectParameters>
</asp:ObjectDataSource>
...

...
<telerik:RadComboBox ID="rcbTPPLAN" runat="server" DataSourceID="odsTBRCFINPRICE_TPPLAN"
    DataTextField="DSCUSTOM" DataValueField="CUSTKEY" Width="100%" OnClientSelectedIndexChanged="ClientRcbTPPLAN_OnSelectedIndexChanged" />
<asp:ObjectDataSource ID="odsTBRCFINPRICE_TPPLAN" runat="server"
    OldValuesParameterFormatString="original_{0}" SelectMethod="GetDataByCDCOMPANY_CUSTTYPE"
    TypeName="DataAccessComponent.dsOtherTableAdapters.TBCUSTOMTableAdapter">
    <SelectParameters>
        <asp:ControlParameter ControlID="hCDCOMPANY" DefaultValue="''" Name="CDCOMPANY" PropertyName="Value" Type="String" />
        <asp:Parameter DefaultValue="DEPR_PLAN" Name="CUSTTYPE" Type="String" />
    </SelectParameters>
</asp:ObjectDataSource>
...

...
<telerik:RadComboBox ID="rcbPER_SUG" runat="server" DataSourceID="odsTBRCFINPRICE_PER_SUG"
    DataTextField="DSCUSTOM" DataValueField="CUSTKEY" Width="100%" />
<asp:ObjectDataSource ID="odsTBRCFINPRICE_PER_SUG" runat="server"
    OldValuesParameterFormatString="original_{0}" SelectMethod="GetDataByCDCOMPANY_PER_SUG"
    TypeName="DataAccessComponent.dsOtherTableAdapters.TBCUSTOMTableAdapter">
    <SelectParameters>
        <asp:ControlParameter ControlID="hCDCOMPANY" DefaultValue="''" Name="CDCOMPANY" PropertyName="Value" Type="String" />
        <asp:Parameter DefaultValue="PER_SUG" Name="CUSTTYPE" Type="String" />
    </SelectParameters>
</asp:ObjectDataSource>

Now let's suppose that a developer's bug causes that the method GetDataByCDCOMPANY_CUSTTYPE produces no data.

Then an exception of this kind is generated:

Exception Message: 'System.Web.HttpUnhandledException'.

Exception StackTrace: in System.Web.UI.Page.HandleError(Exception e)
in System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
in System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
in System.Web.UI.Page.ProcessRequest()
in System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
in System.Web.UI.Page.ProcessRequest(HttpContext context)
in ASP.cpwizardratecard_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\dll\5102107e\48518dac\App_Web_cpwizardratecard.aspx.cdcab7d2.dm-dka8a.0.cs:riga 0
in System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
in System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
in System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

[ArgumentOutOfRangeException: Selection out of range
Parameter Name: value]
   Telerik.Web.UI.RadComboBox.PerformDataBinding(IEnumerable dataSource) +287
   Telerik.Web.UI.RadComboBox.OnDataSourceViewSelectCallback(IEnumerable data) +329
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +34
   Telerik.Web.UI.RadComboBox.OnDataBinding(EventArgs e) +758
   Telerik.Web.UI.RadComboBox.PerformSelect() +21
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +76
   Telerik.Web.UI.RadComboBox.DataBind() +40
   System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +114
   Telerik.Web.UI.RadComboBox.OnPreRender(EventArgs e) +24
   System.Web.UI.Control.PreRenderRecursiveInternal() +90
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +906

This kind of exception is a generic one,  because it states that a component Telerik.Web.UI.RadComboBox of the page, fails during it's Data Binding performing.

This exception don't tell me that THE RadComboBox rcbTPPLAN, which use declaratively the method GetDataByCDCOMPANY_CUSTTYPE, fails.

So every time that happens an exception like that above mentioned, we're in the panic, struggling to understand which declaratively sourced Rad Combo Box produce the error.

Is there a way to understand the rad combo box id that produced the exception?

[Doncho]

Hi Fabio,

The error message "Selection out of range" occurs because something in the backend tries to set a value to the Combo which does not exist.

Please review the backend code (C#), specifically those lines where the value is set to these combos. Instead of setting a selected value, you can try the FindItemByValue() method of the combo instance, set a condition that will check if this item is returned or is null, and mark it as selected.

If you have any questions, please let me know.

[Finwave Spa]

The trouble is that there is no backend code to review. 

RadComboBoxes (RCBs) in the various aspx pages of my project are sourced from DB only in a declarative manner as I stated in points 1) --> 3).

So if we consider the follow rcbCDRATEINDEX RCB

<telerik:RadComboBox ID="rcbCDRATEINDEX" runat="server" DataSourceID="odsTBRCFINPRICE_CDRATEINDEX"
    DataTextField="DSRATEINDEX" DataValueField="CDRATEINDEX" Width="100%" OnClientSelectedIndexChanged="ClientRcbCDRATEINDEX_SelectedIndexChanged" />
<asp:ObjectDataSource ID="odsTBRCFINPRICE_CDRATEINDEX" runat="server"
    OldValuesParameterFormatString="original_{0}" SelectMethod="GetDataByCDCOMPANY"
    TypeName="DataAccessComponent.dsFinancialMarketAndRateTableAdapters.TCRATEINDEXTableAdapter">
    <SelectParameters>
        <asp:ControlParameter ControlID="hCDCOMPANY" DefaultValue="''" Name="CDCOMPANY" PropertyName="Value" Type="String" />
    </SelectParameters>
</asp:ObjectDataSource>

it's items are populated thanks to Object Data Source odsTBRCFINPRICE_CDRATEINDEX, which used the backend method GetDataByCDCOMPANY() to get item's data from DB.

This is the only way I used in my aspx pages to fill tens of Rad Combo Box: I use a declarative statement on aspx pages, I don't use any imperative code, directly instantiating a RCB corresponding .NET object in aspx.cs class.

It's not possible to follow the way of imperative coding, because I had to maintain tens of RCBs, so it will be too long to realize.

I had also thought about making an asp Custom Control, MyRadComboBox, in which I inherit from RadComboBox class, so to simply substitude the declarative aspx code above with the follow

<telerik:MyRadComboBox
    ID="rcbCDRATEINDEX" runat="server" DataSourceID="odsTBRCFINPRICE_CDRATEINDEX"
    DataTextField="DSRATEINDEX" DataValueField="CDRATEINDEX" Width="100%" OnClientSelectedIndexChanged="ClientRcbCDRATEINDEX_SelectedIndexChanged" />
<asp:ObjectDataSource ID="odsTBRCFINPRICE_CDRATEINDEX" runat="server"
    OldValuesParameterFormatString="original_{0}" SelectMethod="GetDataByCDCOMPANY"
    TypeName="DataAccessComponent.dsFinancialMarketAndRateTableAdapters.TCRATEINDEXTableAdapter">
    <SelectParameters>
        <asp:ControlParameter ControlID="hCDCOMPANY" DefaultValue="''" Name="CDCOMPANY" PropertyName="Value" Type="String" />
    </SelectParameters>
</asp:ObjectDataSource>

In MyRadComboBox I would then device a way to realize a speaking exception with the RCB's ID.

The problem is that I can't reach to build the RCB asp control.

So is it possible to device a solution that give me in the exception the ID of the guilty failed RCB when the filling-declarative-Object-Data-Source-aspx method fail to get a valid set of data from DB? (this last evenience is quite likely to happen within our team developing).

Thank you very much.