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What are the practical limitations of using COM objects?
Managed Code and Unmanaged Code related ASP.NET - What are the practical limitations of using COM objects? The following are the practical limitations of using COM objects from .NET: Shared solutions might not allow COM objects : ASP.NET host service providers that use nondedicated servers can limit...
2009-04-21, 5287👍, 0💬

How To Support Multiple Submit Buttons
How To Support Multiple Submit Buttons? - PHP Script Tips - Processing Web Forms Sometimes, you may need to give visitors multiple submit buttons on a single form to allow them to submit the form for different purposes. For example, when you show your customer a purchase order in a Web form, you may...
2007-04-22, 5287👍, 0💬

How To Specify Borders of a Block Element
How To Specify Borders of a Block Element? - CSS Tutorials - HTML Formatting Model: Block, Inline and Floating Elements CSS offers 12 style properties to control borders of a block element with 3 properties on each side to control border style, width and color. You can specify those 12 border proper...
2007-05-11, 5286👍, 0💬

Can You Drop an Index Associated with a Unique or Primary Key Constraint
Can You Drop an Index Associated with a Unique or Primary Key Constraint? - Oracle DBA FAQ - Managing Oracle Table Indexes You can not delete the index associated with a unique or primary key constraint. If you try, you will get an error like this: ORA-02429: cannot drop index used for enforcement o...
2007-05-02, 5286👍, 0💬

How Cookies Are Transported from Browsers to Servers
How Cookies Are Transported from Browsers to Servers? - PHP Script Tips - Understanding and Managing Cookies Cookies are transported from a Web browser to a Web server in the header area of the HTTP request message. Each cookie will be included in a separate "Cookie:" header line in the following fo...
2007-04-24, 5286👍, 0💬

What is ReaderWriter Locks ?
.NET INTERVIEW QUESTIONS - What is ReaderWriter Locks ? You may want to lock a resource only when data is being written and permit multiple clients to simultaneously read data when data is not being updated. The ReaderWriterLock class enforces exclusive access to a resource while a thread is modifyi...
2009-12-29, 5285👍, 0💬

How about 2+5+8?
How about 2+5+"8"? Since 2 and 5 are integers, this is number arithmetic, since 8 is a string, it’s concatenation, so 78 is the result.
2008-09-16, 5285👍, 0💬

How to determine the state of a checkbox using JavaScript?
How to determine the state of a checkbox using JavaScript? Use the "checked" property of the checkbox object. For example: var checkedP = window.document.getElementById ("myCheckBox").checked;
2008-08-19, 5285👍, 0💬

What Are the Length Units Used in CSS
What Are the Length Units Used in CSS? - CSS Tutorials - Page Layout and Background Image Design To control your page width and page layout, you must understand the length units used in CSS. Here is a list of main length units: cm - One centimeter, absolute unit. em - The height of the current text ...
2007-05-11, 5284👍, 0💬

How To Specify a Background Image
How To Specify a Background Image? - CSS Tutorials - Page Layout and Background Image Design The quickest way to specify a background image is to use the background-image style property. Let's try with an image from the Windows system called, follow.jpg: &nbsp; &nbsp; &nbsp; &nbsp; &...
2007-05-11, 5284👍, 0💬

Where Should I Use XML
Where Should I Use XML? Its goal is to enable generic SGML to be served, received, and processed on the Web in the way that is now possible with HTML. XML has been designed for ease of implementation and for interoperability with both SGML and HTML. Despite early attempts, browsers never allowed oth...
2007-04-11, 5284👍, 0💬

How do I send email message from ASP.NET
How do I send email message from ASP.NET ? ASP.NET provides two namespaces System.WEB.mailmessage classand System.Web.Mail.Smtpmail class. Just a small homework create a Asp.NET project.
2007-10-24, 5283👍, 0💬

When to Use SELECT INTO Statements
When to Use SELECT INTO Statements? The SELECT INTO Statement is most often used to create backup copies of tables or for archiving records. SELECT column_name(s) INTO newtable [IN externaldatabase] FROM source SELECT column_name(s) INTO newtable [IN externaldatabase] FROM source WHERE column_name o...
2007-04-15, 5283👍, 0💬

Using XML Files with SGML Tools
If XML is just a subset of SGML, can I use XML files directly with existing SGML tools? Yes, provided you use up-to-date SGML software which knows about the WebSGML Adaptations TC to ISO 8879 (the features needed to support XML, such as the variant form for EMPTY elements; some aspects of the SGML D...
2007-04-11, 5283👍, 0💬

How Many Input Types Are Supported by INPUT Elements
How Many Input Types Are Supported by INPUT Elements? - XHTML 1.0 Tutorials - Understanding Forms and Input Fields There are 10 input types are supported by "input" elements: &lt;input type="text"&gt; - Input text box. This is also the default type. &lt;input type="password"&gt; - Pa...
2007-05-12, 5282👍, 0💬

What is the namespace in which .NET has the data functionality classes
What is the namespace in which .NET has the data functionality classes ? Following are the namespaces provided by .NET for data management System.data This contains the basic objects used for accessing and storing relational data, such as DataSet,DataTable, and DataRelation. Each of these is indepen...
2007-10-24, 5281👍, 0💬

What Are Group Functions
What Are Group Functions? - MySQL FAQs - SQL SELECT Query Statements with GROUP BY Group functions are functions applied to a group of rows. Examples of group functions are: COUNT(*) - Returns the number of rows in the group. MIN(exp) - Returns the minimum value of the expression evaluated on each r...
2007-05-11, 5281👍, 0💬

How To Convert Character Strings to Numeric Values
How To Convert Character Strings to Numeric Values? - MySQL FAQs - Introduction to SQL Basics You can convert character strings to numeric values by using the CAST(string AS DECIMAL) or CAST(string AS SIGNED INTEGER) function as shown in the following examples: SELECT CAST('4123.45700' AS DECIMAL) F...
2007-05-11, 5281👍, 0💬

Why do we need methods to be static for Post Cache substitution
Why do we need methods to be static for Post Cache substitution? ASP.NET should be able to call this method even when there isn't an instance of your page class available. When your page is served from the cache, the page object isn't created. So ASP.NET skips the page life cycle when the page is co...
2007-10-23, 5279👍, 0💬

How To Insert a New Row into a Table
How To Insert a New Row into a Table? - MySQL FAQs - Understanding SQL INSERT, UPDATE and DELETE Statements To insert a new row into a table, you should use the INSERT INTO statement with values specified for all columns as shown in the following example: mysql> INSERT INTO fyi_links VALUES (101, 'd...
2007-05-11, 5279👍, 0💬

What Happens to the Data Files If a Tablespace Is Dropped
What Happens to the Data Files If a Tablespace Is Dropped? - Oracle DBA FAQ - Managing Oracle Tablespaces and Data Files If a tablespace is dropped, what happens to its data files? By default, data files will remain in OS file system, even if the tablespace they are mapped is dropped. Of course, you...
2007-05-03, 5279👍, 0💬

Is Oracel SQL Developer written in Java
Is Oracel SQL Developer written in Java? - Oracle DBA FAQ - Introduction to Oracle SQL Developer Oracel SQL Developer is written in Java. It requires JDK 1.5, which is already included in your download file.
2007-04-26, 5279👍, 0💬

How To Uploaded Files to a Table
How To Uploaded Files to a Table? - PHP Script Tips - Uploading Files to Web Servers To store uploaded files to MySQL database, you can use the normal SELECT statement as shown in the modified processing_uploaded_files.php listed below: &lt;?php $con = mysql_connect("localhost", "", ""); mysql_s...
2007-04-19, 5279👍, 0💬

How To Specify Margin Spaces of a Block Element
How To Specify Margin Spaces of a Block Element? - CSS Tutorials - HTML Formatting Model: Block, Inline and Floating Elements CSS offers 4 style properties to control margin spaces of a block element. You can specify them in different ways as shown in the following CSS examples: {margin-top: 30px} -...
2007-05-11, 5278👍, 0💬

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