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Explain about Connection Pooling? Connection pooling is a concept which deals with database connection. A Connection Pool maintain last database connection active state when connection is ideal. Whenever you want to make a transaction with database once again you have to open connection when it is ideal, instead of that connection pooling will maintain open and reusable connections. A Connection Pool is released from the buffer or memory when the last connection to the database is closed. By default Connection Pooling turned on in ado.net; whenever you want to change it off, you have to specify Pooling = false in the connection string . We can specify limit to connection pooling by default the maximum limit is 100. You will specify in connection string. It will improves the performance and scalability of the application It is managed by a program in ado.net that we called as Pool Manager. This program will ma

dotnet Regular Expressions  Character Description \ Marks the next character as either a special character or escapes a literal. For example, "n" matches the character "n". "\n" matches a newline character. The sequence "\\" matches "\" and "\(" matches "(". Note: double quotes may be escaped by doubling them: "<a href=""...>" ^ Depending on whether the MultiLine option is set, matches the position before the first character in a line, or the first character in the string. $ Depending on whether the MultiLine option is set, matches the position after the last character in a line, or the last character in the string. * Matches the preceding character zero or more times. For example, "zo*" matches either "z" or "zoo". + Matches the preceding character one or more times. For example, "zo+" matches "zoo" but not "z".

when ever we want work with MS.net we have to learn about some keys which can help to improve our work force in development area .i  got some shortcut key in msdn ,You can view all of the keyboard shortcuts for Visual Web Developer. we can create our own shortcuts by doing the following:  on the  Tools  -->  Options ; it will open dialog box  of the Options ,  select  Environment  and then  Keyboard . we have to select the  Show all settings  check box in order to view the  Keyboard  setting. Shortcut Description CTRL+B Switches the selected text between bold and normal. CTRL+I Switches the font style of the selected text between italic and roman. CTRL+U Switches the font style of the selected text between underline and roman. CTRL+SHIFT+L Displays the  Bookmark  dialog box. CTRL+L When text is selected, displays the  Hyperlink  dialog box. CTRL+SHIFT+W Displays your Web page in the default browser. CTRL+ALT+UP ARROW Inse

in dotnet if you want do something related with database, we have to concentrate  on ADO.NET.we have two core component in ADO.NET one is data providers and data set in msdn we have good information checkit  dataset have a nice day