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How to: Read from and Write to Document Properties

You can store document properties along with a document. Office applications provide a number of built-in properties, such as author, title, and subject. This topic shows how to set document properties in Microsoft Office Excel and Microsoft Office Word.

link to video For a related video demonstration, see How Do I: Access and Manipulate Custom Document Properties in Microsoft Word?.

Applies to: The information in this topic applies to document-level projects and application-level projects for the following applications: Excel 2013 and Excel 2010; PowerPoint 2013 and PowerPoint 2010; Project 2013 and Project 2010; Word 2013 and Word 2010. For more information, see Features Available by Office Application and Project Type.

To work with built-in properties in Excel, use the following properties:

These properties return a DocumentProperties object, which is a collection of DocumentProperty objects. You can use the Item property of the collection to retrieve a particular property, either by name or by index within the collection.

The following code example shows how to change the built-in Revision Number property in a document-level project.

To change the Revision Number property in Excel

  1. Assign the built-in document properties to a variable.

    Microsoft.Office.Core.DocumentProperties properties;
    
    properties = (Microsoft.Office.Core.DocumentProperties)
        Globals.ThisWorkbook.BuiltinDocumentProperties; 
    
    Microsoft.Office.Core.DocumentProperty prop;
    prop = properties["Revision Number"]; 
    
  2. Increment the Revision Number property by one.

    if (prop.Value == null)
    {
        prop.Value = 1;
    }
    else
    {
        int revision;
        if (int.TryParse((string)prop.Value, out revision))
        {
            prop.Value = revision + 1;
            MessageBox.Show("Revision Number = " + revision);
        }
        else
        {
            MessageBox.Show("Revision Number = invalid value");
        }
    }
    

To work with built-in properties in Word, use the following properties:

These properties return a DocumentProperties object, which is a collection of DocumentProperty objects. You can use the Item property of the collection to retrieve a particular property, either by name or by index within the collection.

The following code example shows how to change the built-in Subject property in a document-level project.

To change the Subject property

  1. Assign the built-in document properties to a variable.

    Microsoft.Office.Core.DocumentProperties properties;
    
    properties = (Microsoft.Office.Core.DocumentProperties)
        Globals.ThisDocument.BuiltInDocumentProperties; 
    
  2. Change the Subject property to "Whitepaper".

    // Set the Subject property. 
    properties["Subject"].Value = "Whitepaper"; 
    

The examples assume that you have written the code in the ThisWorkbook class in a document-level project for Excel, and the ThisDocument class in a document-level project for Word.

Although you are working with Word and Excel and their objects, Microsoft Office supplies the list of available built-in document properties. Attempting to access an undefined property raises an exception.

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