devxlogo

The Latest

Reduce context overhead for COM+ components

Instances of configured components, that is, components configured in COM+, get runtime services owing to context objects. When you instantiate a COM+ component, your instance will live in a context

Keep Your Projects Intact

VB has always gone out of its way to take care of mundane housekeeping tasks without bothering you with the details. But sometimes the best intentions can create unintended problems.

A New Look at the Select Case

Who says the Select Case can evaluate only one statement? Try Select Case True instead of the If Related Posts Are Design Patterns Really Useful?What Android M Means for the

Split Strings Cleanly, Redux

What if you want to split an array on more than one delimiter? Adding a few lines of code and using recursion can enhance the function to handle multiple delimiters.When

Add a Picture Preview Property Page

Defining a public property in a user control as Picture (or StdPicture) provides the standard ellipsis next to the property name in VB Related Posts Fans disappointed as GTA 6

Check for Errors While Connecting to a Database

When connecting to a database, you should check for errors and return a descriptive user-friendly error message. This code calls an error handler routine after connecting to the database. If

Pass a Parameter to XSL

In XSL: ‘define parameter name and set default value In ASP: ‘set xsl objectDim xslFile, xslDocxslFile = “MyXsl.xsl”Set xslDoc = Server.CreateObject(“Msxml2.DOMDocument”)xslDoc.async = falsexslDoc.load(Server.MapPath(xslFile))’pass parameterset param=xslDoc.selectSingleNode(“//xsl:param[@name=’loginName’]”)param.setAttribute “select”,”‘Bill'” Related Posts Israeli Women

Faster string comparison with the Is operator

.NET strings are objects, so what you store in a String variable is actually a reference to a String object allocated in the managed heap. Even though the VB.NET compiler

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

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

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

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,

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

Using MS Access Database Through JDBC:ODBC

You can easily connect to a MS Access database by using JDBC. First, you need to set up the data source for your MS Access database using the ODBCAdministrator. You

Create Custom Cursors in Swing

Sometimes the provided Swing cursor types just don’t meet the needs of your application. In those cases, you may want to consider creating your own, completely customized cursor. To add

Executing a Member Function Before main()

We can execute any member function or any other execution before main() function by using: “#pragma startup”.Syntax: #pragma startup [priority]//without semicolon Example: #includeclass CL{public: //A constructor CL(){ cout ” The

A Fast Multiplication Method for Integer Numbers

The multiplication operation for integer numbers is implemented in the processor as repeated additions. The number of additions can be reduced by considering the representation in base 2 of the

Bind a DataGrid to a DataSet at design-time

Binding a DataGrid – or any other data-aware control – to a DataSet or a DataTable at runtime isn’t difficult: you just have to assign the DataTable to the DataGrid’s