Justin Cooney

Web Development Tips and Examples

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I am a Senior Applications Programmer / Analyst with years of experience developing enterprise solutions using the Microsoft technology stack including C#, VB.NET, ASP.NET, AJAX, IIS and SQL Server. I specialize in Web application development with a focus on building secure systems, integrating applications, and designing robust database structures.

Author: Justin Cooney

  • Disabling an ASP.NET ASP:Button Control with JavaScript

    When using JavaScript on a ASP.NET Webforms page one can register the JavaScript function to execute using the OnClientClick attribute of the asp:button control. This can be quite usefu,l for example, when adding a script to stop duplicate submissions. However, it is important to correctly disable the button control since using the wrong command will cause…

  • Simple JavaScript to Stop Forms Being Submitted Twice

    To prevent forms from being submitted more than once I sometimes like to add a simple JavaScript function to the Submit button that disables the button when it is clicked. This does not provide a complete guarantee that the data is not sent twice, but it is effective at reducing the risk of multiple submissions.…

  • Using the ASP.NET CustomValidator Control with Custom JavaScript to Prevent Multiple Form Submissions

    Today I was working on a maintenance Web page that triggers a SQL Server stored procedure. This stored procedure can either run quite quickly, or it can take in excess of seven minutes to finish. So in order to let the user know that the process is executing in the background I added a small…