Hi All,
I'm using VB.NET and want to create a datagridview showing the value of a
child property (Datapropertyname = User.Username).
I found following code:
Private Function EvaluateValue(ByRef myObj As Object, ByRef myProp As String)
As String
Dim Ret As String = ""
Dim Props As System.Reflection.PropertyInfo()
Dim PropA As System.Reflection.PropertyInfo
Dim ObjA As Object
If myProp.Contains(".") Then
myProp = myProp.Substring(0, myProp.IndexOf("."))
Props = myObj.GetType().GetProperties()
For Each PropA In Props
ObjA = PropA.GetValue(myObj, New Object() {})
If ObjA.GetType().Name = myProp Then
Ret = EvaluateValue(ObjA, myProp.Substring(myProp.IndexOf(".") + 1))
Exit For
End If
Next
Else
PropA = myObj.GetType().GetProperty(myProp)
Ret = PropA.GetValue(myObj, New Object() {}).ToString()
End If
Return Ret
End Function
But when I am using this with following code:
Private Sub List_CellFormatting(sender As Object, e As
DataGridViewCellFormattingEventArgs) Handles List.CellFormatting
Dim Grid As DataGridView = CType(sender, DataGridView)
e.Value = Func.EvaluateValue(Grid.Rows(e.RowIndex).DataBoundItem,
Grid.Columns(e.ColumnIndex).DataPropertyName)
End Sub
I get a null reference on ObjA.
Anyone experienced with this? Or has someone another way to get the value of
the child property in the datagrid?
Benjamin
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