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Happy Hunting for ASP and Visual InterDev Bugs

Before you spend too much time bashing your head against a problem in Active Server Pages or Visual InterDev, check to see if you’re not up against an acknowledged bug.

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Finding duplicate values in a table

Question: I have a table with the following fields: Physician Patient # Procedure One of the Procedures is “X-ray.” How can I list the Patient # of anyone who has

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SplitTbl – Split a string with multiple delimiters

‘ A variant of the Split function, that offers the following improvements’ You can pass a list of valid delimiters to the second argument’ (however, only single-char delimiters are accepted)’

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DataWindowChild problems

Question: I have a datawindow d_case with a retrieval argument al_case_id. In this datawindow, I have two columns that are ddlbcolumn1 = judge with dddw_judge and column2 = contact with

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SQL Server Transaction log

Question: Is there a way to turn off the transaction log while importing data? We are having a problem with a 1105 error. Answer: You cannot turn the transaction log

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Replace – String replacement under VB4 and VB5

‘ A clone of the VB6’s Replace function for use under VB5’ Note: many routines in this collection uses the Replace functionFunction Replace(Source As String, Find As String, ReplaceStr As

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ReplaceMulti – Multiple string replacements

‘ Perform multiple substitutions in a string’ The first argument is the string to be searched’ The second argument is vbBinaryCompare or vbTextCompare’ and tells whether the search is case

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Overriding Default Object Serialization

Normally, all that is required to perform serialization of an object is to implement the java.io.Serializable interface. However, in some cases, you may wish to control how an object is

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Class String Provides Two Member Functions

Class std::string provides two member functions that return the const char * representation of its object: string::c_str() and string::data(). c_str() returns a null-terminated const pointer to char that represents the

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Determine the Characteristics of a Java Method

The java.lang.reflect defines a Method class that may be used to get information about a method in a Java class. Some of the main methods are: public native int getModifiers();

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Access the TreeView Control’s Current Node Properties

The TreeView control reports its current node–the selected node–only in its NodeClick event’s Node parameter. If you need to access the Node’s properties–such as Key or Text–outside this event, you

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Optimize With the Named Return Value

The named return value is an automatic optimization that a compiler applies in order to eliminate the construction and destruction of a temporary object. When a temporary object is copied

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Limit the Number of Rows Returned When Using JDBC

If you’re issuing SELECT statements to a database using Java Database Connectivity (JDBC), a huge number of records can be returned by the java.sql.ResultSet. However, sometimes you will want to

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Dynamically Load a Style Sheet

Question: How do you dynamically load a style sheet? I’m trying to use the tag in the to load a style sheet. All the pages in my site use the

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Subclass Grid Controls

Sometimes a class needs to communicate with the object that created it. For example, I use a class to subclass grid controls so I can handle things such as tabbing

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Use Select Case to Evaluate Different Expressions

Select Case is commonly used to check different values of a specific variable or expression. You can also use Select Case to evaluate multiple expressions, by starting out with “Select

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Join Two Files Together

The DOS Copy command allows you to take the contents of two different files and put them one after the other into a third file. You can do the same

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Cache Your JavaScript Object References

You can write JavaScript code that is more readable and maintainable by reducing object references. For instance, you can use the with() statement or nested with() statements in JavaScript to

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Ensure the Stability of Your Database

As a database administrator, it is your responsibility to be concerned about anything that might affect the stability of your systems. In that vein, it is not enough to back

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Calling Subclass Methods

When a class is instantiated, the subsequent object is actually an instance of the most derived class in the class hierarchy. This means that even if a class is referenced

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Perform Cross Casts Properly

A cross cast converts a multiply-inherited object to one of its secondary base classes. To demonstrate what a cross cast does, consider this class hierarchy: struct A{ int i; virtual

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Lock the Back Door Too

An extended stored procedure called xp_cmdshell causes SQL Server to spawn a command shell and execute the command given as a parameter. For example, xp_cmdshell ‘dir c:mssqlackup’ would return a