July 27, 2002

Process individual pixels of a bitmap

While you can access individual pixels of a bitmap by means of the GetPixel and SetPixel methods of the Bitmap object, in practice you seldom want to use these methods,

Prevent a second process instance from running

VB6 developers can use the App.PrevInstance property to check whether there is another instance of the same process already running on the current machine. This property isn’t available any longer

Disable .NET security

The .NET Framework enforces secuity at several levels. For example, assemblies downloaded from the Internet have very limited permissions (especially after installing the Service Pack 1 of the Framework). This

Faster string comparisons with CompareOrdinal

You can compare strings in many ways under VB.NET: by using the = operator (or another comparison operator), with the Equals method (which the String class inherits from System.Object), or

Open Excel Sheet Data as a Recordset Using ADODB

‘****************************************************’Written By KNR’Excel Sheet Reading’Read Excel File Using ADO’You can use Microsoft EXCEL Driver’****************************************************Public Function Read_Excel(ByVal sFile As String) As ADODB.Recordset On Error GoTo fix_err Dim rs As ADODB.Recordset Set