adamreeve opened a new issue, #40792:
URL: https://github.com/apache/arrow/issues/40792
### Describe the bug, including details regarding any error messages,
version, and platform.
Test to reproduce:
```c#
[Fact]
public void RecursiveArraySlice()
{
var initialValues = Enumerable.Range(0, 100).ToArray();
var array = new Int32Array.Builder().AppendRange(initialValues).Build();
var sliced = (Int32Array) array.Slice(20, 30);
var slicedAgain = (Int32Array) sliced.Slice(5, 10);
Assert.Equal(25, slicedAgain.Offset); // Fails with "Actual: 45"
Assert.Equal(10, slicedAgain.Length);
Assert.Equal(
initialValues.Skip(25).Take(10).Select(val => (int?) val).ToArray(),
(IReadOnlyList<int?>) slicedAgain);
}
```
This is because the current offset is accounted for twice, first at
https://github.com/apache/arrow/blob/e3b0bd1feb63d59cd6fb553af976449397b8348e/csharp/src/Apache.Arrow/Arrays/ArrowArrayFactory.cs#L113
Then again at
https://github.com/apache/arrow/blob/e3b0bd1feb63d59cd6fb553af976449397b8348e/csharp/src/Apache.Arrow/Arrays/ArrayData.cs#L112
This only works if the offset is zero.
### Component(s)
C#
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