System.ArgumentException: An entry with the same key already exists. RSS

• • Reply
  

  marchetto271

  Member

  2 Points

  2 Posts

  System.ArgumentException: An entry with the same key already exists.

  Aug 11, 2011 03:33 PM|LINK

  Hello to all. I'm  a newbie and I joined because I have an error that I just couldn't solve. It's System.ArgumentException: An entry with the same key already exists. error.

  Here is the whole stack trace:

  An entry with the same key already exists.
  Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
  
  Exception Details: System.ArgumentException: An entry with the same key already exists.
  
  Source Error:
  An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
  
  
  Stack Trace:
  
  [ArgumentException: An entry with the same key already exists.]
  System.Collections.Specialized.ListDictionary.Add(Object key, Object value) +6157735
  System.Collections.Specialized.HybridDictionary.Add(Object key, Object value) +60
  System.Web.UI.StateBag.Add(String key, Object value) +126
  System.Web.UI.WebControls.Parameter.UpdateValue(HttpContext context, Control control) +77
  System.Web.UI.WebControls.ParameterCollection.UpdateValues(HttpContext context, Control control) +113
  System.Web.UI.WebControls.SqlDataSource.LoadCompleteEventHandler(Object sender, EventArgs e) +46
  System.EventHandler.Invoke(Object sender, EventArgs e) +0
  System.Web.UI.Page.OnLoadComplete(EventArgs e) +8876398
  System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2350

  I can't figure out what produces the error because it shows only frequently. For example: I am browsing my website and refreshing the page over and over and it' s ok for like 10 minutes and then all of a sudden it throws an error. then I refresh it once more and the error is gone.

  I just don't know when will it show and why, but after refreshing website only once it works perfect again.

  Please help me because I'm starting to freak out.

  Thanks in advance,

  marchetto271
  
  
   

• • Reply
  

  madhu mogull...

  Member

  2 Points

  1 Post

  Re: System.ArgumentException: An entry with the same key already exists.

  Aug 11, 2011 04:39 PM|LINK

  marchetto271

  Hello to all. I'm  a newbie and I joined because I have an error that I just couldn't solve. It's System.ArgumentException: An entry with the same key already exists. error.

  Here is the whole stack trace:

  An entry with the same key already exists.
  Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
  
  Exception Details: System.ArgumentException: An entry with the same key already exists.
  
  Source Error:
  An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
  
  
  Stack Trace:
  
  [ArgumentException: An entry with the same key already exists.]
  System.Collections.Specialized.ListDictionary.Add(Object key, Object value) +6157735
  System.Collections.Specialized.HybridDictionary.Add(Object key, Object value) +60
  System.Web.UI.StateBag.Add(String key, Object value) +126
  System.Web.UI.WebControls.Parameter.UpdateValue(HttpContext context, Control control) +77
  System.Web.UI.WebControls.ParameterCollection.UpdateValues(HttpContext context, Control control) +113
  System.Web.UI.WebControls.SqlDataSource.LoadCompleteEventHandler(Object sender, EventArgs e) +46
  System.EventHandler.Invoke(Object sender, EventArgs e) +0
  System.Web.UI.Page.OnLoadComplete(EventArgs e) +8876398
  System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2350

  I can't figure out what produces the error because it shows only frequently. For example: I am browsing my website and refreshing the page over and over and it' s ok for like 10 minutes and then all of a sudden it throws an error. then I refresh it once more and the error is gone.

  I just don't know when will it show and why, but after refreshing website only once it works perfect again.

  Please help me because I'm starting to freak out.

  Thanks in advance,

  marchetto271
  
  
   

• • Reply
  

  vmillasp

  Member

  626 Points

  154 Posts

  Re: System.ArgumentException: An entry with the same key already exists.

  Aug 12, 2011 07:40 PM|LINK

  find in your code the the class instance of 'ListDictionary' and find when the function 'Add' is called, 

  the error means there is an value pair with the same index already in the dictionay

  so do something like this:

  if (listdictionary.contains('key'))
  {
    //put special code here to handle adding the same key
  }
  else
  {
    listdictionary.add(...)
  }

  Java Forums
• • Reply
  

  marchetto271

  Member

  2 Points

  2 Posts

  Re: System.ArgumentException: An entry with the same key already exists.

  Aug 14, 2011 09:57 PM|LINK

  Thanks, I'll try that!

• • Reply
  

  Damon Liu - ...

  Contributor

  5920 Points

  535 Posts

  Microsoft

  Re: System.ArgumentException: An entry with the same key already exists.

  Aug 16, 2011 06:13 AM|LINK

  Hi,

   In your Program,System.Collections.Specialized.ListDictionary.Add(Object key, Object value) you can add same key in a ListDictionary.

  About hoew to use ListDictionary you can refer to the link:http://msdn.microsoft.com/en-us/library/system.collections.specialized.listdictionary.add.aspx

  Best Regards,

  Damon

  Please mark the replies as answers if they help or unmark if not.
  If you have any feedback about my replies, please contact msdnmg@microsoft.com
  Microsoft One Code Framework
  
  • Marked as answer by Damon Liu - MSFT on Aug 18, 2011 01:28 AM