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This is a pretty common mistake - modifying a collection whilst iterating it using foreach, keep in mind that foreach uses readonly IEnumerator instance. Try to loop through the collection using for() with an extra index check so if the index is out of bounds you would be able to apply additional logic to handle it.
7 de feb. de 2014 · The problem is where you are executing: rankings[kvp.Key] = rankings[kvp.Key] + 4; You cannot modify the collection you are iterating through in a foreach loop. A foreach loop requires the loop to be immutable during iteration.
28 de oct. de 2012 · 7 Answers. Sorted by: 17. From the IEnumerable documentation: An enumerator remains valid as long as the collection remains unchanged. If changes are made to the collection, such as adding, modifying, or deleting elements, the enumerator is irrecoverably invalidated and its behavior is undefined.
11 de jun. de 2021 · System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.Collections.Generic.List`1.Enumerator.MoveNext() This error can happen in two scenarios: You’re looping over the collection in a foreach loop and modifying it (add/removing) in the same loop.
10 de ene. de 2014 · Getting Collection was modified; enumeration operation may not execute. exception. Reason: This exception occurs when the enumeration that you are looping through is modified in same thread or some other thread. Now, in the code that you have provided there isnn't any such scenario.
18 de feb. de 2020 · Resolved Collection was modified; enumeration operation may not execute. ItsMeJohnstee. Joined: Feb 18, 2020. Posts: 2. Hey guys, I'm currently getting the error stated in the title when I run the following code: Code (CSharp): foreach ( GameObject enemy in GlobalVariables.enemyList) {
25 de abr. de 2023 · The error “Collection was modified; enumeration operation may not execute.” can result from a problem with the iteration involving enumerations. It occurs when trying to modify a collection while iterating over it using an enumerator. This situation can happen in various iterating scenarios.
