Imposta DataSource personalizzato per WorkbookDesigner

Aspose.Cells offre la possibilità di impostare DataSource personalizzato per WorkbookDesigner. Il API fornisce un metodo sovraccaricoWorkbookDesigner.SetDataSourceche prende il nome della sorgente come primo parametro e l’istanza della classe che implementaICellsDataTablecome secondo parametro.

Il seguente frammento di codice illustra l’uso diWorkbookDesigner.SetDataSourcemetodo per impostare il DataSource personalizzato.

Codice d’esempio

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
//Source directory
string sourceDir = RunExamples.Get_SourceDirectory();
string outputDir = RunExamples.Get_OutputDirectory();

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"));

Workbook workbook = new Workbook(sourceDir + "SmartMarker1.xlsx");

WorkbookDesigner designer = new WorkbookDesigner(workbook);

designer.SetDataSource("Customer", new CustomerDataSource(customers));

designer.Process();

workbook.Save(outputDir + "dest.xlsx");

L’implementazione diCustomerDataSource, Cliente, eElenco clienti classi è riportato di seguito

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
public class CustomerDataSource : ICellsDataTable
{
    public CustomerDataSource(CustomerList customers)
    {
        this.m_DataSource = customers;
        this.m_Properties = customers[0].GetType().GetProperties();
        this.m_Columns = new string[this.m_Properties.Length];
        this.m_PropHash = new Hashtable(this.m_Properties.Length);

        for (int i = 0; i < m_Properties.Length; i++)
        {
            this.m_Columns[i] = m_Properties[i].Name;
            this.m_PropHash.Add(m_Properties[i].Name, m_Properties[i]);
        }
        this.m_IEnumerator = this.m_DataSource.GetEnumerator();
    }

    internal string[] m_Columns;
    internal ICollection m_DataSource;
    private Hashtable m_PropHash;
    private IEnumerator m_IEnumerator;
    private System.Reflection.PropertyInfo[] m_Properties;

    public string[] Columns
    {
        get
        {
            return this.m_Columns;
        }
    }

    public int Count
    {
        get
        {
            return this.m_DataSource.Count;
        }
    }

    public void BeforeFirst()
    {
        this.m_IEnumerator = this.m_DataSource.GetEnumerator();
    }

    public object this[int index]
    {
        get
        {
            return this.m_Properties[index].GetValue(this.m_IEnumerator.Current, null);
        }
    }

    public object this[string columnName]
    {
        get
        {
            return ((System.Reflection.PropertyInfo)this.m_PropHash[columnName]).GetValue(this.m_IEnumerator.Current, null);
        }
    }

    public bool Next()
    {
        if (this.m_IEnumerator == null)
            return false;

        return this.m_IEnumerator.MoveNext();
    }
}

public class Customer
{
    public Customer(string aFullName, string anAddress)
    {
        FullName = aFullName;
        Address = anAddress;
    }

    public string FullName { get; set; }

    public string Address { get; set; }
}

public class CustomerList : ArrayList
{
    public new Customer this[int index]
    {
        get { return (Customer)base[index]; }
        set { base[index] = value; }
    }
}

I file excel di origine e di output sono allegati per riferimento.

File sorgente

File di uscita