Hello,

Any now and then I get an error like this:

InnerException: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Id_FC'.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Web.UI.DataBinder.GetPropertyValue
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Id_FC'. ---> System.Web.HttpException: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Id_FC'. at System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName) at System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName, String format) at System.Web.UI.WebControls.ListControl.PerformDataBinding(IEnumerable dataSource) at System.Web.UI.WebControls.ListControl.PerformSelect() at AGSIS.FCforma.Page_Load(Object sender, EventArgs e) in E:\Inetpub\dnn_2\DesktopModules\AGSIS\FCforma.ascx.cs:line 21 at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
 

This is very strange because my application works, let's say 95% of the time correctly, except these errors (let's say 5%).

In ascx.cs at line 21: ddFacultateCiclu.DataBind();

while the ddFacultate is like this:

 <asp:DropDownList ID="ddFacultateCiclu" runat="server" AutoPostBack="True" DataSourceID="sqlDSFacultateCiclu" DataTextField="Denumire" DataValueField="Id_FC" OnSelectedIndexChanged="ddFacultateCiclu_SelectedIndexChanged" Width="100%">
</asp:DropDownList>
<asp:SqlDataSource ID="sqlDSFacultateCiclu" runat="server" ConnectionString="<%$ ConnectionStrings:AGSISSqlServer %>" SelectCommand="FacultateCiclu_GetByFacultate" SelectCommandType="StoredProcedure" OnSelecting="sqlDSFacultateCiclu_Selecting">
<SelectParameters>
<asp:Parameter Name="ID_Facultate" Type="Int64" />
<asp:Parameter Name="ID_AnUniv" Type="Int64" />
</SelectParameters>
</asp:SqlDataSource>

Please note that the SP mentioned in the source returns the correct columns... Also, very strange, the DNN aplication works fine while my module(s) throw(s) errors. My modules get data from a separate database in the same instance of SQL Server 2005.

Plese help tracking down the source of errors...

Thank you,

Catalin

Thank you for your interest.

The problem is that the application/module works just fine with no errors, until, in some un-identified conditions, all my modules begin throwing errors. The modules built with SqlDataSource throw errors like mentioned above, while modules built with "classic" code-behind or ObjectDataSource data-binding do not throw errors but the grids/datalists/lists/dropdowns/... inside them do not get populated.

If the application is restarted (host menu), everything starts working until... these un-identified conditions...

[edit, 3 min. later]
And to answer your questions. I believe that an error would appear only when the SelectedValue for the DropDownList would populated with a value that does not exist in the data bound to the dropdownlist. But this is not the case but I believe it is a more profound one, but I do not know which one...

Catalin

Here is a link to both the C# code and the ASCX: www.unitbv.ro/cata/errors/errors.zip

Thanks for helping.

Catalin