I have a report where there are a set of known values which are dynamically set. The detail section shows numbers that are used for comparative purposes. I am looking to create a binding or some other method that will evaluate the difference between the two values.
In groupheadersection1 I have a textbox txt1
In detailsection1 I have a textbox txt2 with a value of =fields.someval
In detailsection1 I have a textbox txt3 which needs to show the difference between txt1.value and txt2.value
Partial Public Class tstClass
Public Sub New(ByVal _ds As DataSet)
txt1.Value = _ds.Tables(0).Rows(0).Item(0)
Me.DataSource = _ds.Tables(1)
Accessing the value via expressions seems to fail. I created a binding, to a public shared function, but of course the shared function cannot access txt1.
Any ideas on how to get the value for txt1.value-txt2.value??