Solve Asp.net error: operation is not valid due to the current state of the object

Today, my colleagues encountered the following problems during system maintenance:

Asp.net error: operation is not valid due to the current state of the object.

Google:

<Configuration>
<Deleetask>
<Add key = "ASPnet: maxhttpcollectionkeys" value = "5000"/>
</Appsettings>
</Configuration>

 

After solving this problem, I am deeply touched. I have been working for more than a year. Although I have not been dedicated to development, I have been directed to the internal systems of the Development Organization. I have been using C # for more than a year. During this period, I have always been satisfied with the current situation and will not take the initiative to learn, not to mention the desire for technology. Although life is free, it is very empty. I feel like this year I have completely changed to another one, and it has become a self-motivated, greedy boiled frog.

Miss me.

I hope that you will not sink in this way and get up with your spirits. The road ahead is still long. Do not lose yourself in a comfortable life.