IndexOf() [2/2]

int System.Data.DataColumnCollection.IndexOf ( string? columnName )

inline

Definition at line 561 of file DataColumnCollection.cs.

    {
        if (columnName != null && 0 < columnName.Length)
        {
            int count = Count;
            if (!_columnFromName.TryGetValue(columnName, out var value) || value == null)
            {
                int num = IndexOfCaseInsensitive(columnName);
                if (num >= 0)
                {
                    return num;
                }
                return -1;
            }
            for (int i = 0; i < count; i++)
            {
                if (value == _list[i])
                {
                    return i;
                }
            }
        }
        return -1;
    }

References System.Data.DataColumnCollection._columnFromName, System.Data.DataColumnCollection._list, System.Data.InternalDataCollectionBase.Count, System.count, System.Data.DataColumnCollection.IndexOfCaseInsensitive(), System.Collections.Generic.Dictionary< TKey, TValue >.TryGetValue(), and System.value.