Edit Excel Metadata in C#

Read and Write Excel file metadata in C# including:

• ApplicationName Gets the name of the application with which the file was created.
• Author - Gets or sets the author of the file.
• Category - Gets or sets the category of the file.
• Comments - Gets or sets the comments field value.
• Company - Gets the company field value.
• Created - Gets or sets the creation time.
• CustomProperties - Gets the custom properties of the workbook.
• Keywords - Gets or sets the keywords field value.
• LastPrinted - Gets or sets the last printed time.
• Manager - Gets the manager field value.
• Modified - Gets or sets the last modification time.
• Subject - Gets or sets the subject of the file.
• Template - Gets the template field value.
• Title - Gets or sets the title of the file.