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Katrina
635
question about filtering and xamDataGrid with DataSet
posted

I followed the instructions here: http://help.infragistics.com/Help/NetAdvantage/WPF/2010.2/CLR4.0/html/xamDataPresenter_Binding_a_DataPresenter_Control_to_a_DataSet.html to bind my grid to a DataSet. But when I click on the drop down box on the filter it throws an InvalidOperationException.

Message: "Collection was modified; enumeration operation may not execute."

Source: PresentationFramework

StackTrace:    at System.Windows.Data.CollectionView.PlaceholderAwareEnumerator.MoveNext()

 

my code looks like:

private DataSet dsDummyData;

public void CreateDummyData(int NumRowsToCreate)
    {
      dsDummyData = new DataSet();
      dsDummyData.Tables.Add("testData");
      dsDummyData.Tables["testData"].Columns.Add("Price");
      var list = new List<object[]>();
      for (double i = NumRowsToCreate; i > 0; i--)
      {
        var priceData = new object[1];
        priceData[0] = i;
        list.Add(priceData);
      }
      foreach (var objectse in list)
      {
        dsDummyData.Tables["testData"].Rows.Add(objectse);
      }
    }


    private void UserControl_Loaded(object sender, RoutedEventArgs e)
    {
      CreateDummyData(10);
      if (dsDummyData.Tables["testData"] != null)
      {
        this.myGrid.DataSource = dsDummyData.Tables["testData"].DefaultView;
      }
    }

 

What am I missing?

 

 

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  • 105
    posted

    Normal 0 false false false EN-GB X-NONE X-NONE MicrosoftInternetExplorer4

    Hi,

    I have recently upgraded to 11.1 infragistics from 2010.  I am used to having exception free code and therefore I catch all thrown exceptions when debugging.

    After upgrading to 2011 from 2010 I am seeing lots of  exceptions which did not use to be there. They appear randomly as I activate rows, row filter or try editing cells in xamDataGrid.

    All exceptions are handled I just want to point out the different behaviour in your code which used to be exception free on WPF 2010.3.

     

    System.InvalidOperationException occurred

      Message=Collection was modified; enumeration operation may not execute.

      Source=PresentationFramework

      StackTrace:

           at System.Windows.Data.CollectionView.PlaceholderAwareEnumerator.MoveNext()

     

    last callstack from infragistics library before calling  PresentationFramework.dll

    PresentationFramework.dll!System.Windows.Data.CollectionView.OnCollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs args) Line 1126 + 0xc bytes   C#

                    InfragisticsWPF4.v11.1.dll!Infragistics.Collections.ObservableCollectionExtended<Infragistics.Windows.DataPresenter.FilterDropDownItem>.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e) + 0x12 bytes

                    InfragisticsWPF4.v11.1.dll!Infragistics.Collections.ObservableCollectionExtended<Infragistics.Windows.DataPresenter.FilterDropDownItem>.EndUpdate() + 0x92 bytes      

                    InfragisticsWPF4.DataPresenter.v11.1.dll!Infragistics.Windows.DataPresenter.ResolvedRecordFilterCollection.FilterDropDownItemLoader.PopulatePhase1() + 0x13a bytes   

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