peass-ng/PEASS-ng · error · ArgumentException

Items in collection exceed available items in destination ar

Error message

Items in collection exceed available items in destination array.

What it means

ICollection<NameValuePair>.CopyTo throws ArgumentException when the destination array cannot hold all items: array.Length - arrayIndex is smaller than the v2 collection count. The fault is in the caller's sizing/offset of the destination array, not in the collection contents.

Source

Thrown at winPEAS/winPEASexe/winPEAS/TaskScheduler/NamedValueCollection.cs:540

        bool ICollection<NameValuePair>.Contains(NameValuePair item)
        {
            if (v2Coll == null)
                return unboundDict.Contains(item);

            foreach (var invp in this)
                if (Equals(item, invp)) return true;
            return false;
        }

        void ICollection<NameValuePair>.CopyTo(NameValuePair[] array, int arrayIndex)
        {
            if (v2Coll == null)
                unboundDict.CopyTo(array, arrayIndex);
            else
            {
                if (array.Length - arrayIndex < v2Coll.Count)
                    throw new ArgumentException("Items in collection exceed available items in destination array.");
                if (arrayIndex < 0)
                    throw new ArgumentException(@"Array index must be 0 or greater.", nameof(arrayIndex));
                for (var i = 0; i < v2Coll.Count; i++)
                    array[i + arrayIndex] = new NameValuePair(v2Coll[i]);
            }
        }

        bool ICollection<NameValuePair>.IsReadOnly => false;

        ICollection<string> IDictionary<string, string>.Keys => Names;

        bool ICollection<KeyValuePair<string, string>>.IsReadOnly => false;

        bool ICollection<NameValuePair>.Remove(NameValuePair item)
        {
            var i = -1;
            try
            {

View on GitHub (pinned to 53fb989abc)

Solutions

1. Allocate the destination array with at least Count + arrayIndex elements.
2. Use arrayIndex 0 with an array sized to Count for a simple full copy.
3. Use LINQ ToArray() instead of CopyTo to let the runtime size the array.

When it happens

Trigger: Thrown at winPEAS/winPEASexe/winPEAS/TaskScheduler/NamedValueCollection.cs:540 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of peass-ng/PEASS-ng@53fb989abc (2026-09-02). Data as JSON: /api/errors/3c783a9265dfa1b5. Report an issue: GitHub.