id | 层级视图项标识符。 |
sampleIndex | 合并样本索引。 |
metadataIndex | 元数据索引。 |
long Returns value of the metadata as long.
返回层级视图项元数据值的长整型表示形式。
Throws:
System.ArgumentException if id is invalid.
System.IndexOutOfRangeException if sampleIndex is not in the range from 0 to GetItemMergedSamplesCount.
System.IndexOutOfRangeException if medataIndex is not in the range from 0 to GetItemMergedSamplesMetadataCount.
See Also: GetItemMergedSamplesCount, GetItemMergedSamplesMetadataCount, GetItemMetadataAsLong.