Catching Application Configuration Error...

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  • =?Utf-8?B?SmFzb24gUmljaG1laWVy?=
    #1

    Catching Application Configuration Error...

    Is there a way to catch an application configuration error on startup?

    I have written a windows service. If there is an error in the configuration
    file (such as invalid xml) the exception is thrown before the OnStart method
    is invoked. Is there a way to catch this exception?

    Thank you,

    Jason Richmeier
    Tags: None
    • =?Utf-8?B?TW9ydGVuIFdlbm5ldmlrIFtDIyBNVlBd?=
      #2
      RE: Catching Application Configuration Error...

      Hi Jason,

      No, errors in the configuration files are thrown by .Net Framework before
      the application is loaded. If this is a common issue, consider using a
      separate configuration file and load it manually.

      --
      Happy Coding!
      Morten Wennevik [C# MVP]


      "Jason Richmeier" wrote:
      Is there a way to catch an application configuration error on startup?
      >
      I have written a windows service. If there is an error in the configuration
      file (such as invalid xml) the exception is thrown before the OnStart method
      is invoked. Is there a way to catch this exception?
      >
      Thank you,
      >
      Jason Richmeier

        Comment

        • Jeff Winn
          #3
          Re: Catching Application Configuration Error...

          Actually, configuration errors are thrown when the configuration is first
          accessed, not when the appdomain is being loaded. If your service is
          throwing an exception before OnStart is called you might want look at your
          code and make sure you aren't accessing the ConfigurationMa nager somewhere
          that would cause it to get thrown before the service has started.

          The service is created in your Program.cs file (assuming you're using Visual
          Studio), I'd start looking in there first. Also check your service class for
          any static variables or class variables that are being set as the class is
          being instantiated.

          "Morten Wennevik [C# MVP]" <MortenWennevik @hotmail.comwro te in message
          news:BE2C9C37-C859-4F85-B647-FE1F739A209A@mi crosoft.com...
          Hi Jason,
          >
          No, errors in the configuration files are thrown by .Net Framework before
          the application is loaded. If this is a common issue, consider using a
          separate configuration file and load it manually.
          >
          --
          Happy Coding!
          Morten Wennevik [C# MVP]
          >
          >
          "Jason Richmeier" wrote:
          >
          >Is there a way to catch an application configuration error on startup?
          >>
          >I have written a windows service. If there is an error in the
          >configuratio n
          >file (such as invalid xml) the exception is thrown before the OnStart
          >method
          >is invoked. Is there a way to catch this exception?
          >>
          >Thank you,
          >>
          >Jason Richmeier

            Comment

            • =?Utf-8?B?TW9ydGVuIFdlbm5ldmlrIFtDIyBNVlBd?=
              #4
              Re: Catching Application Configuration Error...

              Well, since the configuration files may contain sections meant for the CLR
              describing how the application is to be run, the configuration file is read
              prior to running any application code.

              --
              Happy Coding!
              Morten Wennevik [C# MVP]


              "Jeff Winn" wrote:
              Actually, configuration errors are thrown when the configuration is first
              accessed, not when the appdomain is being loaded. If your service is
              throwing an exception before OnStart is called you might want look at your
              code and make sure you aren't accessing the ConfigurationMa nager somewhere
              that would cause it to get thrown before the service has started.
              >
              The service is created in your Program.cs file (assuming you're using Visual
              Studio), I'd start looking in there first. Also check your service class for
              any static variables or class variables that are being set as the class is
              being instantiated.
              >
              "Morten Wennevik [C# MVP]" <MortenWennevik @hotmail.comwro te in message
              news:BE2C9C37-C859-4F85-B647-FE1F739A209A@mi crosoft.com...
              Hi Jason,

              No, errors in the configuration files are thrown by .Net Framework before
              the application is loaded. If this is a common issue, consider using a
              separate configuration file and load it manually.

              --
              Happy Coding!
              Morten Wennevik [C# MVP]


              "Jason Richmeier" wrote:
              Is there a way to catch an application configuration error on startup?
              >
              I have written a windows service. If there is an error in the
              configuration
              file (such as invalid xml) the exception is thrown before the OnStart
              method
              is invoked. Is there a way to catch this exception?
              >
              Thank you,
              >
              Jason Richmeier
              >

                Comment

                • =?Utf-8?B?SmFzb24gUmljaG1laWVy?=
                  #5
                  Re: Catching Application Configuration Error...

                  I had pretty much come to this conclusion. I wasn't sure if there was
                  anything that I could put in the Startup class (where Main is located) to
                  trap the error. I do like the idea you presented. My configuration file has
                  a custom configuration section so I have to manually load this section anyway.

                  Thank you,

                  Jason Richmeier

                  "Morten Wennevik [C# MVP]" wrote:
                  Well, since the configuration files may contain sections meant for the CLR
                  describing how the application is to be run, the configuration file is read
                  prior to running any application code.
                  >
                  --
                  Happy Coding!
                  Morten Wennevik [C# MVP]
                  >
                  >
                  "Jeff Winn" wrote:
                  >
                  Actually, configuration errors are thrown when the configuration is first
                  accessed, not when the appdomain is being loaded. If your service is
                  throwing an exception before OnStart is called you might want look at your
                  code and make sure you aren't accessing the ConfigurationMa nager somewhere
                  that would cause it to get thrown before the service has started.

                  The service is created in your Program.cs file (assuming you're using Visual
                  Studio), I'd start looking in there first. Also check your service class for
                  any static variables or class variables that are being set as the class is
                  being instantiated.

                  "Morten Wennevik [C# MVP]" <MortenWennevik @hotmail.comwro te in message
                  news:BE2C9C37-C859-4F85-B647-FE1F739A209A@mi crosoft.com...
                  Hi Jason,
                  >
                  No, errors in the configuration files are thrown by .Net Framework before
                  the application is loaded. If this is a common issue, consider using a
                  separate configuration file and load it manually.
                  >
                  --
                  Happy Coding!
                  Morten Wennevik [C# MVP]
                  >
                  >
                  "Jason Richmeier" wrote:
                  >
                  >Is there a way to catch an application configuration error on startup?
                  >>
                  >I have written a windows service. If there is an error in the
                  >configuratio n
                  >file (such as invalid xml) the exception is thrown before the OnStart
                  >method
                  >is invoked. Is there a way to catch this exception?
                  >>
                  >Thank you,
                  >>
                  >Jason Richmeier

                    Comment

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