SpreadsheetDocument.UsedFileName

Read and write.Type: String.
Contains name of file, to which the document is saved when user executes the "Save" command.
This property is filled up in the following cases:
1. When you set the value programmatically;
2. When you open a document from a file interactively;
3. When you call the Show method and if it contains the file name;
4. When user calls the "Save as..." command.
Thin client, web-client, server, thick client, external connection, Mobile application (client), Mobile application (server).

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