When I am doing it like that, the cell is empty :( Op woensdag 10 juni 2015 18:12:59 UTC+2 schreef Ricardo Peres: > > Why not simply set User.Username as the DataField of your > BoundColumn-derived column? > This syntax (prop1.prop2) is totally accepted. > > RP > > On Wednesday, June 10, 2015 at 2:31:10 PM UTC+1, > [email protected] wrote: >> >> 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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