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ASP.NET dynamically created controls and Postback

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I know this question has been asked thousands of times, and I've struggled with it before, but for some reason, I can't accomplish what I want to accomplish... I have a dynamically added LinkButton that when clicked will dynamically add a control (in this example, a textbox) to the same panel. The intent is to continuously add on as many controls as times the LinkButton was clicked (i.e. I click it once, one box, then another click will give me 2 boxes, another click adds a 3rd). In the code below, I use the current date and time serialized to create a unique ID for each textbox control. When

How to give dynamic file name in the appender in log4j.xml

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问题 I am using log4j to log information. I have used a log4j.xml file for creating log files. I have given the absolute path for each log file as a param tag value. E.g.: <appender name=\"FA\" class=\"org.apache.log4j.DailyRollingFileAppender\"> <param name=\"DatePattern\" value=\"\'_\'yyyyMMdd\"/> <param name=\"File\" value=\"D:/logFiles/GPreprocessor.log\"/> <layout class=\"com.dnb.genericpreprocessor.common.log.AppXMLLayout\"/> </appender> I do not want to write \"GPreprocessor.log\" directly.

Dynamic Database Schema

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问题 What is a recommended architecture for providing storage for a dynamic logical database schema? To clarify: Where a system is required to provide storage for a model whose schema may be extended or altered by its users once in production, what are some good technologies, database models or storage engines that will allow this? A few possibilities to illustrate: Creating/altering database objects via dynamically generated DML Creating tables with large numbers of sparse physical columns and

ASP.NET dynamically created controls and Postback

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问题 I know this question has been asked thousands of times, and I\'ve struggled with it before, but for some reason, I can\'t accomplish what I want to accomplish... I have a dynamically added LinkButton that when clicked will dynamically add a control (in this example, a textbox) to the same panel. The intent is to continuously add on as many controls as times the LinkButton was clicked (i.e. I click it once, one box, then another click will give me 2 boxes, another click adds a 3rd). In the