DevExpress.DataAccess.ObjectBinding.ObjectDataSource objds = new DevExpress.DataAccess.ObjectBinding.ObjectDataSource();  
objds.Name = "ObjectDataSource1";  
objds.DataSource = typeof(BusinessObject);  
//This line of code passes a parameter value to a parameterized constructor of an underlying data source object.
var parameter = new DevExpress.DataAccess.ObjectBinding.Parameter("p1", typeof(int), 3);  
objds.Constructor = new DevExpress.DataAccess.ObjectBinding.ObjectConstructorInfo(parameter);  
objds.DataMember = "Items";  
...  
public class BusinessObject {  
    public SampleItems Items { get; set; }  
    public BusinessObject(int p1) {  
        Items = new SampleItems(p1);  
    }  
}  
public class SampleItems : List<SampleItem> {  
    public SampleItems() : this(10) { }  
    public SampleItems(int itemNumber) {  
        for (int i = 0; i < itemNumber; i++) {  
            Add(new SampleItem() { Name = i.ToString() });  
        }  
    }  
}  
public class SampleItem {  
    public string Name { get; set; }  
}

DevExpress.DataAccess.ObjectBinding.ObjectDataSource objds = new DevExpress.DataAccess.ObjectBinding.ObjectDataSource();  
objds.Name = "ObjectDataSource1";  
objds.DataSource = typeof(SampleItem);  
var parameter = new DevExpress.DataAccess.ObjectBinding.Parameter("value", typeof(int), 3);  
objds.Parameters.Add(parameter); 
// Specify all method parameters prior to specifying the method name.
objds.DataMember = "GetData";  
// This line of code is required to obtain the data source object schema. 
objds.Fill();  
...  
 public class SampleItem {  
     public string Name { get; set; }  
     public static List<SampleItem> GetData(int value) {  
         List<SampleItem> items = new List<SampleItem>();  
         for (int i = 0; i < value; i++)  
         {  
             items.Add(new SampleItem() { Name = i.ToString() });  
         }  
         return items;  
     }  
 }