Manual > Reference > Properties

This is the latest error message.

Setting and retrieval examples

strMessage = AxEng1.ErrMessage

Commentary

The most recent error message is stored. Refer to it immediately after each method failure.

example

If Not AxEng1.ReadVal("U01.F01.T01", varValue) Then
	txtError.Text = "Fail to read : " & Eng1.ErrMessage
End If

reference