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This document describes the procedures and utilities for building real time Web based graphic screens under Visual Basic .NET 2003. These screens may be animated using real time data from a control system. Screens may be displayed on any workstation using a browser such as Microsoft Internet Explorer 5.5.
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Upgrade TPRI VB6 Screens to VB.NET
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| title | Starting VB.NET Development |
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Click Start Select Programs Select Microsoft Visual Studio .NET 2003 Click Microsoft Visual Studio .NET 2003 to start .NET 2003 development environment
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| title | Other Common Upgrade Problems |
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Variant Replace with object when array data type is involved
Replace with string when both numeric and non-numeric data types are involved
Color type
> System.Drawing.Color
> System.Drawing.SystemColor Windows API Any Type
> Specify the data type
> Overload the function if necessary Shape Control
> Use TPRI.Shape control instead Line Control
> Draw a line in code:
Imports System.Drawing
Imports System.Drawing.Drawing2D > Dim lobjGraphics as Graphics
LobjGraphics.DrawLine(Pens.Red, X1, Y1, X2, Y2)
LobjGraphics.Dispose() File and Directory
> Use .NET File class
Imports System.IO
Dim lobjFile As File
lobjFile.Copy(SourceName, DestinationName, True)
lobjFile.Delete(SourceName) > Use .NET Directory class
Imports System.IO
Directory.Exists(Name)
Directory.CreateDirectory(Name)
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