C# WPF Change Datagrid cell number of decimals

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I have a datagriId bound to an observable collection. I want to store the correct values in the observable collection (with all decimals) but I want to see less decimals in the datagrid. So I tried this:

http://stackoverflow.com/questions/12164079/change-datagrid-cell-value-programmatically-in-wpf[^]

and some similar others.

In the end what I need is to change the value of the datagrid when the event is fired.

C#

private void Datagrid_LoadingRow(object sender, DataGridRowEventArgs e)
{
  DataGridRow row = e.Row;
  var pePCDmise = row.Item as PcDmisData.Measures;

  DataGridRow rowContainer = dtgResults.GetRow(0);
  DataGridCell  d = dtgResults.GetCell(rowContainer, 3);
}

So the rowcontainer above is not null but when I try to get the cell value I get a null exception. Particularly:

C#

public static DataGridCell GetCell(this DataGrid grid, DataGridRow row, int column)
{
  if (row != null)
  {
    DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(row);

    if(presenter == null)
    {
      grid.ScrollIntoView(row, grid.Columns[column]);
      presenter = GetVisualChild<DataGridCellsPresenter>(row);
    }

    DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
    return cell;
  }
  return null;
}

the presenter above is null and it's null also after having entered the if.
How can I make it work?

Aside from the aforementioned problem how can I make a one-way-bind? I have set the datagrid bind with

dtgResults.ItemsSource = easyRunData.olstMeasures;

but now I want to change the dtgResults number of decimals only and not the observable collection value.

Thanx for any help
Patrick

Posted 14-Dec-15 2:34am

Patrick70__

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Pikoh · Accepted Answer · 2015-12-14T03:50:00

I think you're going the hard way. I think it's a lot simpler to add in the class type your ObservableCollection is another field with a field containing the less decimals string and show that in your grid. Something like:

C#

privatec ObservableCollection<dataclass> _list;
public ObservableCollection<dataclass> list
{
    get
       {
           return this._list;
       }
    set
       {
           this._list = value;
           RaisePropertyChanged("list");
       }
}

public class DataClass
{
    public double val { get;set; }
    public string formattedVal 
    {
        get
           {
            return this.val.ToString("#0.00");
           }

    }
}

Another way could be using DataGridTemplateColumn.