Bind WPF DataGrid column to indexed property in

How to bind a DataGrid column to an indexed property in XAML?

My property which I try to bind is:

Code:

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Private m_Correlations As New Dictionary(Of Integer, Double)
Public Property Correlations(ByVal key As Integer) As Double
        Get
            If m_Correlations.ContainsKey(key) Then
                  Return m_Correlations(key)
              Else
                  Return Nothing
              End If
        End Get
          Set(value As Double)
                m_Correlations(key) = value
          End Set
End Property

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I have set the ItemsSource for the DataGrid to be my custom object.

Trying to bind the column to the first indexed item with

Code:

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FieldName="Correlations[0]"

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or

Code:

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FieldName="Correlations(0)"

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...doesn't work. The whole column appears with no data in it.

What comes to my mind is the create a separate property that contains the "first-item" in the collection, not very nice, but is should work

Quote:

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Originally Posted by Lightning

What comes to my mind is the create a separate property that contains the "first-item" in the collection, not very nice, but is should work

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It will work but it doesn't solve my problem here.
I can of course make separate properties for each items, like
Correlation0
Correlation1
Correlation2
...
Correlation1000

This is not optimal however. Amount of those properties is determineded at runtime based on the underlying data. Therefore I prefer a collection here.

An other possibility, which might or might not work depending on the situation, is to use an itemslist / listbox / ... that binds to the collection

Quote:

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Originally Posted by Lightning

An other possibility, which might or might not work depending on the situation, is to use an itemslist / listbox / ... that binds to the collection

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I'm binding here a columns in the datadrig. UI cannot be changed here.
I have a datagrid that has x number of columns (amount of colulmns determined at runtime) and the corresponding custom object that has the equal number of properties.

You could also use a converter, and pass the index as converterparameter