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canuja
What is the Difference between User Control and Custom Control in ASP.NET
By canuja in ASP.NET on Nov 28 2006
  • Ravi Kumar
    Nov, 2006 28

    Factors User control Custom control
    Deployment Designed for single-application scenarios

    Deployed in the source form (.ascx) along with the source code of the application

    If the same control needs to be used in more than one application, it introduces redundancy and maintenance problems    		 Designed so that it can be used by more than one application

    Deployed either in the application's Bin directory or in the global assembly cache

    Distributed easily and without problems associated with redundancy and maintenance
    Creation Creation is similar to the way Web Forms pages are created; well-suited for rapid application development (RAD) Writing involves lots of code because there is no designer support
    Content A much better choice when you need static content within a fixed layout, for example, when you make headers and footers More suited for when an application requires dynamic content to be displayed; can be reused across an application, for example, for a data bound table control with dynamic rows
    Design Writing doesn't require much application designing because they are authored at design time and mostly contain static data Writing from scratch requires a good understanding of the control's life cycle and the order in which events execute, which is normally taken care of in user controls

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