winform 映射字段的写法：

 public partial class FrmFieldMapping : DevComponents.DotNetBar.Office2007Form
    {
        private AMDataFieldCollection linkEntryFields;

        string linkCategoryId;
        AMCategory[] categorys;
        /// <summary>
        /// 当前的分类
        /// </summary>
        string currCategoryId;
        ///// <summary>
        ///// 数据库里面读取过来的集合
        ///// </summary>
        List<AMLinkFieldItem> LstLinkDataGridViewFieldItem = new List<AMLinkFieldItem>();
        /// <summary>
        /// 存储序列化信息的类
        /// </summary>
        AMBusinessLinkArchival currLink = new AMBusinessLinkArchival();
        public FrmFieldMapping()
        {
            if (currLink == null)
            {
                currLink.LinkCategoryId = string.Empty;
                currLink.LstLinkFieldItem = new List<AMLinkFieldItem>();
            }
            InitializeComponent();
            this.dataGridView.AllowUserToResizeRows = false;
            //防止出现  datagridviewcomboboxcell 值无效  这个错误
            this.dataGridView.DataError += delegate(object sender, DataGridViewDataErrorEventArgs e) { };
            //控件事件
            this.btnOk.Click += new System.EventHandler(this.btnOk_Click);
            this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
            this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
            this.cbxCategory.SelectedIndexChanged += new EventHandler(cbxCategory_SelectedIndexChanged);
            this.dataGridView.CellEnter += dataGridView_CellEnter;

            //下拉框数据
            this.categorys = ApplicationEx.ClientInterface.ListCategories();
            List<ComboxItem> lstComboItem = new List<ComboxItem>();
            for (int i = ; i < this.categorys.Length; i++)
            {
                ComboxItem item = new ComboxItem();
                item.ItemText = this.categorys[i].CategoryId + "." + this.categorys[i].Name;
                item.ItemValue = this.categorys[i].CategoryId;
                lstComboItem.Add(item);
            }

            this.cbxCategory.Items.Clear();
            this.cbxCategory.Items.AddRange(lstComboItem.ToArray());
            this.cbxCategory.DisplayMember = "ItemText";
            this.cbxCategory.ValueMember = "ItemValue";

            string[,] arryFields = new string[,]
            {
                { "string", "DJH", "地籍号" },
                { "string", "TDQLR", "土地权利人" },
                { "string", "ZJMC", "证件名称" },
                { "string", "ZJHM", "证件号码" },
                { "string", "ZSH", "土地证号" },
                { "string", "ZDH", "宗地号" },
                { "string", "DJFZSJ", "登记发证时间" },
                { "string", "SYQMJ", "使用权面积"},
                { "string", "QSXZ", "权利性质" },
                { "string", "SYQLX", "使用权类型"},
                { "string", "SYQX", "使用期限" },
                { "string", "TDYT", "土地用途" },
                { "string", "TDDJ", "土地等级" },
                { "string", "JZZDMJ", "建筑占地面积" },
                { "string", "DZSYMJ", "独自使用面积"},
                { "string", "QTSX", "其他事项"},
                { "string", "BZ", "备注" },
                { "string", "TDZL", "土地坐落"},
                { "string", "TDMJ", "土地面积" },
            };

            for (int k = ; k < arryFields.GetLength(); k++)
            {
                AMLinkFieldItem fieldItem = new AMLinkFieldItem();
                for (int j = ; j < arryFields.GetLength(); j++)
                {
                    if (j == )
                    {
                        fieldItem.BusinessFiledDateType = arryFields[k, j];
                    }
                    else if (j == )
                    {
                        fieldItem.BusinessFiledName = arryFields[k, j];
                    }
                    else if (j == )
                    {
                        fieldItem.BusinessFiledCaption = arryFields[k, j];
                    }
                }
                LstLinkDataGridViewFieldItem.Add(fieldItem);
            }

            //前两列数据绑定
            foreach (AMLinkFieldItem field in LstLinkDataGridViewFieldItem)
            {
                DataGridViewRow dgvRow = this.dataGridView.Rows[this.dataGridView.Rows.Add()];
                dgvRow.Cells[DateType.Index].Value = field.BusinessFiledDateType;
                dgvRow.Cells[currFieldName.Index].Value = field.BusinessFiledName;
                dgvRow.Cells[currCategoryField.Index].Value = field.BusinessFiledCaption;
                //事先设定好行的tag
                dgvRow.Tag = field;
            }

            //从数据库加载列表集合
            string queryKey = string.Format("FrmFieldMapping").ToUpper();
            string favoritesKeyValue = ApplicationEx.ConnectionInterface.GetPropertyValue(queryKey);
            currLink = ApplicationEx.DeserializeToObject(Convert.FromBase64String(favoritesKeyValue)) as AMBusinessLinkArchival;

            if(currLink!=null&&currLink.LinkCategoryId!=null)
            {
                //绑定类别的下拉表
                for (int i = ; i < cbxCategory.Items.Count; i++)
                {
                    if ((cbxCategory.Items[i] as ComboxItem).ItemValue.ToString() == currLink.LinkCategoryId)
                    {
                        cbxCategory.SelectedItem = cbxCategory.Items[i];
                        break;
                    }
                }
            }
        }

        void dataGridView_CellEnter(object sender, DataGridViewCellEventArgs e)
        {
            //实现单击一次显示下拉列表框
            if (dataGridView.Columns[e.ColumnIndex] is DataGridViewComboBoxColumn && e.RowIndex != -)
            {
                SendKeys.Send("{F4}");
            }
        }

        /// <summary>
        /// 点击类别列表的时候切换关联信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void cbxCategory_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.linkCategoryId = ((this.cbxCategory.SelectedItem as ComboxItem).ItemValue as string);
            this.linkEntryFields = ApplicationEx.ClientInterface.ListDataFields(this.linkCategoryId);

            BuildMapFieldListCBX();

            this.dataGridView.Focus();
            currCategoryId = linkCategoryId;
            //如果数据库有信息就加载数据库的
            if (currLink!=null&&currLink.LinkCategoryId == currCategoryId)
            {
                foreach (DataGridViewRow dgvRow in this.dataGridView.Rows)
                {
                    foreach (AMLinkFieldItem comboxField in currLink.LstLinkFieldItem)
                    {
                        if (comboxField.BusinessFiledName == dgvRow.Cells[currFieldName.Index].Value.ToString())
                        {
                            if (this.linkEntryFields.Contains(comboxField.LinkArchivalFiledName))
                            {
                                dgvRow.Cells[cmbLinkField.Index].Value = this.linkEntryFields[comboxField.LinkArchivalFiledName];
                            }
                            break;
                        }
                    }
                }
            }
            else
            {
                //如果数据库没有信息就加载默认的匹配讯息
                foreach (DataGridViewRow dgvRow in this.dataGridView.Rows)
                {
                    //遍历行然后转换每一行的tag成为AMLinkFieldItem类
                    AMLinkFieldItem linkItem = dgvRow.Tag as AMLinkFieldItem;
                    /*然后循环AMDataField找到和AMLinkFieldItem里面的caption显示名称一样的类，然后再赋值给当前行的下拉表的默认值，如果没有的话就制空该行的下拉框
                     *保证把每行的下拉列表的默认值做一个初始化设置默认值的操作，
                     *关键字：下拉列表绑定类：AMDataField  dagairidview绑定类:AMLinkFieldItem  比较对象：caption
                     */
                    foreach (AMDataField field in this.linkEntryFields)
                     {
                         if (field.Caption == linkItem.BusinessFiledCaption)
                         {
                             dgvRow.Cells[this.cmbLinkField.Index].Value = field;
                             break;
                         }
                         else
                         {
                             dgvRow.Cells[this.cmbLinkField.Index].Value = null;
                         }
                     }
                }

            }
        }

        /// <summary>
        /// 构造gridview下拉框的数据
        /// </summary>
        void BuildMapFieldListCBX()
        {
            Dictionary<string, string> dicComboxItems = new Dictionary<string, string>();
            List<ComboxItem> test = new List<ComboxItem>();

            cmbLinkField.Items.Clear();
            List<ComboxItem> lstComboItem = new List<ComboxItem>();
            ComboxItem item = new ComboxItem();
            //空格选项
            item.ItemText ="";
            item.ItemValue = "";
            lstComboItem.Add(item);
            for (int i = ; i < this.linkEntryFields.Count; i++)
            {
                item = new ComboxItem();
                item.ItemText = this.linkEntryFields[i].Caption;
                item.ItemValue = this.linkEntryFields[i];
                lstComboItem.Add(item);
            }
            cmbLinkField.Items.AddRange(lstComboItem.ToArray());
            cmbLinkField.DisplayMember = "ItemText";
            cmbLinkField.ValueMember = "ItemValue";
        }

        public class ComboxItem
        {
            private string itemText;

            public string ItemText
            {
                get { return itemText; }
                set { itemText = value; }
            }
            private Object itemValue;

            public Object ItemValue
            {
                get { return itemValue; }
                set { itemValue = value; }
            }
            public override string ToString()
            {
                return this.ItemText;
            }

        }
        /// <summary>
        /// 建立关联信息并且放入数据库
        /// </summary>
        void BuildLinkCondition()
        {
            try
            {
                //初始化集合
                if(currLink!=null)
                {
                    currLink.LstLinkFieldItem.Clear();
                }
                int index = ;
                List<AMLinkFieldItem> LstLinkFieldItem = new List<AMLinkFieldItem>();
                foreach (DataGridViewRow dgvRow in this.dataGridView.Rows)
                {
                    if (!string.IsNullOrEmpty(dgvRow.Cells[DateType.Index].Value.ToString()))
                    {
                        //加载的时候自动匹配的数据
                        if (dgvRow.Cells[cmbLinkField.Index].Value != null)
                        {
                            AMLinkFieldItem fieldItems = new AMLinkFieldItem();
                            fieldItems.BusinessFiledDateType = dgvRow.Cells[DateType.Index].Value.ToString();
                            fieldItems.BusinessFiledName = dgvRow.Cells[currFieldName.Index].Value.ToString();
                            fieldItems.BusinessFiledCaption = dgvRow.Cells[currCategoryField.Index].Value.ToString();
                            fieldItems.LinkArchivalFiledName = (dgvRow.Cells[cmbLinkField.Index].Value as AMDataField).Name;
                            LstLinkFieldItem.Add(fieldItems);
                        }
                    }
                    index++;
                }
                //构造信息的类并且加入数据库
                AMBusinessLinkArchival currSaveLink = new AMBusinessLinkArchival();
                currSaveLink.LinkCategoryId = currCategoryId;
                currSaveLink.LstLinkFieldItem = LstLinkFieldItem;
                //序列化并且调用加入数据库的方法存入属性表
                string queryKey = string.Format("FrmFieldMapping").ToUpper();
                string queryKeyValue = string.Empty;
                queryKeyValue = Convert.ToBase64String(ApplicationEx.SerializerToByte(currSaveLink));
                ApplicationEx.ConnectionInterface.SetPropertyValue(queryKey, queryKeyValue);
                //最后关闭窗体
                this.Close();
            }
            catch (Exception ex)
            {
                ApplicationEx.ShowErrorMessageBox(this, ex);
            }
        }

        private void btnOk_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(this.linkCategoryId))
            {
                ApplicationEx.ShowMessageBox(this, "关联分类为空，请选择！");
                return;
            }
            BuildLinkCondition();
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        private void btnClear_Click(object sender, EventArgs e)
        {
            //清空记录
            for (int j = ; j < dataGridView.Rows.Count; j++)
            {
                this.dataGridView.Rows[j].Cells[cmbLinkField.Index].Value = null;
            }
        }
    }

注：ApplicationEx.ConnectionInterface.Set/Get  PropertyValue 为数据库的处理方法