[ConnectionProvider("Row")]
public IWebPartRow GetConnectionInterface()
{
    return new RowProviderWebPart();
}

//引入命名空间
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Reflection;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
//This sample code creates a Web Parts control that acts as a provider of row data.
namespace My 
{
    public sealed class RowProviderWebPart : WebPart, IWebPartRow 
    {

        private DataTable _table;

        public RowProviderWebPart() 
        {
            _table = new DataTable();

            DataColumn col = new DataColumn();
            col.DataType = typeof(string);
            col.ColumnName = "Name";
            _table.Columns.Add(col);

            col = new DataColumn();
            col.DataType = typeof(string);
            col.ColumnName = "Address";
            _table.Columns.Add(col);

            col = new DataColumn();
            col.DataType = typeof(int);
            col.ColumnName = "ZIP Code";
            _table.Columns.Add(col);

            DataRow row = _table.NewRow();
            row["Name"] = "John Q. Public";
            row["Address"] = "123 Main Street";
            row["ZIP Code"] = 98000;
            _table.Rows.Add(row);
        }
        [ConnectionProvider("Row")]
        public IWebPartRow GetConnectionInterface()
        {
            return new RowProviderWebPart();
        }
        public PropertyDescriptorCollection Schema 
        {
            get {
                return TypeDescriptor.GetProperties(_table.DefaultView[0]);
                }
        }
        public void GetRowData(RowCallback callback)
        {
            callback(_table.Rows);
        }
    }
}

//引入命名空间
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Reflection;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
// This sample code creates a Web Parts control that acts as a consumer of row data.
namespace My 
{

    public sealed class RowConsumerWebPart : WebPart {
        private IWebPartRow _provider;
        private ICollection _tableData;
    
            private void GetRowData(object rowData)
            {
                _tableData = (ICollection)rowData;
            }

        protected override void OnPreRender(EventArgs e)
        {
                if (_provider != null)
                {
                    _provider.GetRowData(new RowCallback(GetRowData));
                }
        }

        protected override void RenderContents(HtmlTextWriter writer) {
            if (_provider != null) {
                PropertyDescriptorCollection props = _provider.Schema;
                int count = 0;
                if (props != null && props.Count > 0 && _tableData != null) {
                    foreach (PropertyDescriptor prop in props) 
                    {
                        foreach (DataRow o in _tableData)
                        {
                            writer.Write(prop.DisplayName + ": " + o[count]);
                            writer.WriteBreak();
                            writer.WriteLine();
                            count = count + 1;
                        }
                    }
                }
                else {
                    writer.Write("No data");
                }
            }
            else {
                writer.Write("Not connected");
            }
        }
        [ConnectionConsumer("Row")]
        public void SetConnectionInterface(IWebPartRow provider) 
        {
            _provider = provider;
        }
         }
    }
//}