[C#]

public void MailMergeCustomDataSource()

{

    // Create some data that we will use in the mail merge.

    CustomerList customers = new CustomerList();

    customers.Add(new Customer("Thomas Hardy", "120 Hanover Sq., London"));

    customers.Add(new Customer("Paolo Accorti", "Via Monte Bianco 34, Torino"));

    // Open the template document.

    Document doc = new Document(MyDir + "MailMerge.CustomDataSource.doc");

    // To be able to mail merge from your own data source, it must be wrapped

    // into an object that implements the IMailMergeDataSource interface.

    CustomerMailMergeDataSource customersDataSource = new CustomerMailMergeDataSource(customers);

    // Now you can pass your data source into Aspose.Words.

    doc.MailMerge.Execute(customersDataSource);

    doc.Save(MyDir + "MailMerge.CustomDataSource Out.doc");

}

/// <summary>

/// An example of a "data entity" class in your application.

/// </summary>

public class Customer

{

    public Customer(string aFullName, string anAddress)

    {

        mFullName = aFullName;

        mAddress = anAddress;

    }

    public string FullName

    {

        get { return mFullName; }

        set { mFullName = value; }

    }

    public string Address

    {

        get { return mAddress; }

        set { mAddress = value; }

    }

    private string mFullName;

    private string mAddress;

}

/// <summary>

/// An example of a typed collection that contains your "data" objects.

/// </summary>

public class CustomerList : ArrayList

{

    public new Customer this[int index]

    {

        get { return (Customer)base[index]; }

        set { base[index] = value; }

    }

}

/// <summary>

/// A custom mail merge data source that you implement to allow Aspose.Words

/// to mail merge data from your Customer objects into Microsoft Word documents.

/// </summary>

public class CustomerMailMergeDataSource : IMailMergeDataSource

{

    public CustomerMailMergeDataSource(CustomerList customers)

    {

        mCustomers = customers;

        // When the data source is initialized, it must be positioned before the first record.

        mRecordIndex= -;

    }

    /// <summary>

    /// The name of the data source. Used by Aspose.Words only when executing mail merge with repeatable regions.

    /// </summary>

    public string TableName

    {

        get { return "Customer"; }

    }

    /// <summary>

    /// Aspose.Words calls this method to get a value for every data field.

    /// </summary>

    public bool GetValue(string fieldName, out object fieldValue)

    {

        switch (fieldName)

        {

            case "FullName":

                fieldValue = mCustomers[mRecordIndex].FullName;

                return true;

            case "Address":

                fieldValue = mCustomers[mRecordIndex].Address;

                return true;

            default:

                // A field with this name was not found,

                // return false to the Aspose.Words mail merge engine.

                fieldValue = null;

                return false;

        }

    }

    /// <summary>

    /// A standard implementation for moving to a next record in a collection.

    /// </summary>

    public bool MoveNext()

    {

        if (!IsEof)

            mRecordIndex++;

        return (!IsEof);

    }

    public IMailMergeDataSource GetChildDataSource(string tableName)

    {

        return null;

    }

    private bool IsEof

    {

        get { return (mRecordIndex >= mCustomers.Count); }

    }

    private readonly CustomerList mCustomers;

    private int mRecordIndex;

}