• INDEX VB TO NET
• KNOWLEDGE BASE
• EWIS-ISSUES
• ISSUE #2074

WARNING #2074

<class1> property <class1>.<prop1> was upgraded to <class1>.<prop2> which has a new behavior

Description

During the upgrade process, some class members and events can be mapped to a .NET equivalent with minor behavior differences. If this EWI is displayed in a given project, the selected source structure will not threaten the functional equivalence of the resulting code but can require some manual fine tuning.

Recommendations

Compare the new .Net members and events to the old ones and verify their behavioral equivalence.

MSDN contains some lists as well as documentation on these equivalences: Windows Forms Controls for Visual Basic 6.0 Users

Sample VB6

Public Sub NewBehaviorParent(ByVal c As Control)
   Dim b As Form
   Set b = c.Parent
   MsgBox c.Name & "'s parent is " & b.Name
End Sub

Target VB.NET

Public Sub NewBehaviorParent(ByVal c As Label)
	'UPGRADE_WARNING: (2074) Control property c.Parent was upgraded to c.FindForm which has a new behavior.
	Dim b As Form = c.FindForm()
	MessageBox.Show(c.Name & "'s parent is " & b.Name, My.Application.Info.Title)
End Sub

Target C#

public void NewBehaviorParent(Label c)
{
	//UPGRADE_WARNING: (2074) Control property c.Parent was upgraded to c.FindForm which has a new behavior.
	Form b = c.FindForm();
	MessageBox.Show(c.Name + "'s parent is " + b.Name, AssemblyHelper.GetTitle(System.Reflection.Assembly.GetExecutingAssembly()));
}

Download VBUC Free Trial

It's time to eradicate VB6

8 Proven Tips for
Planning a Successful Migration