MultiFileDataSet.VerifyIndexFiles Property
Gets or sets a flag indicating if the contents of index files should be verified before use.
Syntax
public System.Boolean VerifyIndexFiles { get; set; }Property Value
Default: false
True if index files should be verified; otherwise, False.
This property can only be modified before the dataset has been initialized. Attempting to modify it after initialization will cause an exception to be thrown.
Remarks
If data files are added, removed or updated, an existing index file will become invalid. The results of using an invalid index file are undefined. To avoid this, the index file must be deleted when the data changes, and rebuilt the next time the dataset is loaded.
However, if this property is True, the dataset will check the validity of the file index file before using it, and automatically recreate it if necessary. The verification is done by locating all files matching the FileName , Path and SearchSubdirectories, the same way as when the index created. If the set of files is the same, and no data file has a later modification timestamp than the index file itself, the index file is reused.
This verification process may take a little time, but is typically much faster than rebuilding a new index every time. If the data is rarely modified, this property may be set to False to improve load times.
If this property causes the file index to be rebuilt, and the dataset supports a search index or a raster cache, these index files will also be rebuilt.
Platforms
Windows, Linux, Android