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此示例显示如何使用Business Objects集合创建报表。Business Objects是一个对象类数据，使用它可以以不同的结构呈现数据：表，列表，数组等。要使用Bisiness对象，您可以使用报表对象的RegBusinessObject（）方法：

private void btDesign_Click(object sender, RoutedEventArgs e)
{
    var stream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(
        "UsingBusinessObjects.SimpleList.mrt");
 
    StiReport report = new StiReport();
    report.Load(stream);
 
    stream.Close();
    stream.Dispose();
    stream = null;
    report.CalculationMode = StiCalculationMode.Interpretation;
    report.RegBusinessObject("Data", "Data", new Data());
 
    report.Design();
}
 
private void btPreview_Click(object sender, RoutedEventArgs e)
{
    var stream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(
        "UsingBusinessObjects.SimpleList.mrt");
 
    StiReport report = new StiReport();
    report.Load(stream);
 
    stream.Close();
    stream.Dispose();
    stream = null;
 
    report.CalculationMode = StiCalculationMode.Interpretation;
    report.RegBusinessObject("Data", "Data", new Data());
    report.Render();
 
    report.Show();
}

Data()对象包含报表所需的数据结构和数据行：

public class Data
{
    private List<CategoriesItem> categoriesItems = new List<CategoriesItem>();
    public List<CategoriesItem> Categories
    {
        get
        {
            return categoriesItems;
        }
        set
        {
            categoriesItems = value;
        }
    }
 
    public class CategoriesItem
    {
        private List<ProductsItem> products;
        public List<ProductsItem> Products
        {
            get
            {
                return products;
            }
            set
            {
                products = value;
            }
        }
 
        private System.Int32? categoryID;
        public System.Int32? CategoryID
        {
            get
            {
                return categoryID;
            }
            set
            {
                categoryID = value;
            }
        }
 
...

下面的屏幕截图中，您可以看到示例代码的结果。

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