[Access] C#通过COM组件访问Access文件

	public class SLAccessHelper
	{
		private dynamic m_AccessApp;// Access.Application
		private dynamic m_Database;// Database
		private dynamic m_Recordset;

		/// <summary>
		/// 构造函数
		/// </summary>
		/// <param name="visible">Access是否可见</param>
		public SLAccessHelper(bool visible)
		{
			m_AccessApp = AutomationFactory.CreateObject("Access.Application");
			m_AccessApp.Visible = visible;
		}

		/// <summary>
		/// 打开数据库
		/// </summary>
		/// <param name="filePath">Access数据库文件路径</param>
		/// <param name="exclusive">是否共享</param>
		/// <param name="bstrPassword">密码</param>
		public void OpenDb(string filePath, bool exclusive = false, string bstrPassword = "")
		{
			m_AccessApp.OpenCurrentDatabase(filePath, exclusive, bstrPassword);
			m_Database = m_AccessApp.CurrentDb();
		}

		/// <summary>
		/// 获取当前数据库中所有表名称集合
		/// </summary>
		/// <returns>所有表名称集合</returns>
		public List<string> GetTableNames()
		{
			List<string> tableNames = new List<string>();
			dynamic tableDefs = m_Database.TableDefs;
			foreach (dynamic tableDef in tableDefs)
			{
				tableNames.Add(tableDef.Name);
			}

			return tableNames;
		}

		/// <summary>
		/// 加载表数据
		/// </summary>
		/// <param name="tableName">表名称</param>
		/// <returns>表数据</returns>
		public List<List<string>> LoadTable(string tableName)
		{
			dynamic recordSet = m_Database.OpenRecordset(tableName);
			int fieldsCount = recordSet.Fields.Count;
			List<List<string>> data = new List<List<string>>();
			if (fieldsCount > 0)
			{
				try
				{
					List<string> fieldNames = new List<string>();
					for (int i = 0; i < fieldsCount; i++)
					{
						fieldNames.Add(recordSet.Fields[i].Name);
					}
					data.Add(fieldNames);
					if (!recordSet.EOF)
					{
						recordSet.MoveFirst();
						while (!recordSet.EOF)
						{
							object[] dataRow = recordSet.GetRows();// 返回一维数组
							List<string> dataRowStr = new List<string>();
							for (int i = 0; i < dataRow.Length; i++)
							{
								dataRowStr.Add(dataRow[i] == null ? "" : dataRow[i].ToString());
							}
							data.Add(dataRowStr);
						}
					}
				}
				catch (Exception ex)
				{
					throw new Exception(ex.Message);
				}
				finally
				{
					if (recordSet != null)
					{
						recordSet.Close();
						((IDisposable)recordSet).Dispose();
						recordSet = null;
					}
				}
			}

			return data;
		}

		/// <summary>
		/// 添加新纪录
		/// </summary>
		/// <param name="tableName">表格名称</param>
		/// <param name="data">数据</param>
		public void AddNewRecord(string tableName, List<Dictionary<string, object>> data)
		{
			try
			{
				m_Recordset = m_Database.OpenRecordset(tableName, 1);// 1=RecordsetTypeEnum.dbOpenTable
				int fieldsCount = m_Recordset.Fields.Count;
				List<string> fieldNames = new List<string>();
				for (int i = 0; i < fieldsCount; i++)
				{
					fieldNames.Add(m_Recordset.Fields[i].Name);
				}
				for (int rowIndex = 0; rowIndex < data.Count; rowIndex++)
				{
					m_Recordset.AddNew();
					foreach (string fieldName in fieldNames)
					{
						m_Recordset.Fields[fieldName].Value = data[rowIndex][fieldName];
					}
					m_Recordset.Update();
				}
			}
			catch(Exception ex)
			{
				throw new Exception(ex.Message);
			}
			finally
			{
				if (m_Recordset != null)
				{
					m_Recordset.Close();
					((IDisposable)m_Recordset).Dispose();
					m_Recordset = null;
				}
			}
		}

		/// <summary>
		/// 更新表格数据
		/// </summary>
		/// <param name="tableName">表格名称</param>
		/// <param name="data">数据</param>
		public void UpdateTable(string tableName, List<Dictionary<string, string>> data)
		{
			try
			{
				m_Recordset = m_Database.OpenRecordset(tableName, 1);// 1=RecordsetTypeEnum.dbOpenTable
				m_Recordset.MoveFirst();
				for (int rowIndex = 0; rowIndex < data.Count; rowIndex++)
				{
					m_Recordset.Edit();
					foreach (string fieldName in data[rowIndex].Keys)
					{
						m_Recordset.Fields[fieldName].Value = data[rowIndex][fieldName];
					}
					m_Recordset.Update();
					m_Recordset.MoveNext();
				}
			}
			catch (Exception ex)
			{
				throw new Exception(ex.Message);
			}
			finally
			{
				if (m_Recordset != null)
				{
					m_Recordset.Close();
					((IDisposable)m_Recordset).Dispose();
					m_Recordset = null;
				}
			}
		}

		/// <summary>
		/// 关闭
		/// </summary>
		public void Close()
		{
			if (m_Database != null)
			{
				m_Database.Close();
				((IDisposable)m_Database).Dispose();
				m_Database = null;
			}
			if (m_AccessApp != null)
			{
				m_AccessApp.CloseCurrentDatabase();
				// m_AccessApp.Quit();// 导致最后会弹出Access主页面
				((IDisposable)m_AccessApp).Dispose();
				m_AccessApp = null;
			}
			GC.Collect();
		}
	}