1.创建 Access 数据库，并关闭其连接
Access 操作的两个引用:
1) Microsoft ActiveX Data Objects 2.8 Library
2) Microsoft ADO Ext. 2.8 for DDL and Security
/// <summary>
/// 创建数据库并返回连接字符串
/// </summary>
/// <param name="dbName">路径+文件名</param>
/// <returns></returns>
public static bool CreateAccess(string dbName)
{
try
{
string databaseConn;
//dbName = @"d:\newAccess.mdb";
databaseConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + dbName + ";";
if (File.Exists(dbName)) return false;
// 创建数据库
ADOX.CatalogClass accessCatalog = new CatalogClass();
accessCatalog.Create(databaseConn);
#region
//// 创建一个表
//ADOX.TableClass table = new ADOX.TableClass();
//table.ParentCatalog = accessCatalog;
//table.Name = "MyTable";
//// 创建一个自动增长字段
//ADOX.ColumnClass col = new ADOX.ColumnClass();
//col.ParentCatalog = accessCatalog;
//col.Type = ADOX.DataTypeEnum.adInteger;//设置字段类型
//col.Name = "ID";
//col.Properties["jet OLEDB:Allow Zero Length"].Value = false;
//col.Properties["AutoIncrement"].Value = true;
//table.Columns.Append(col,ADOX.DataTypeEnum.adInteger,0);
//// 添加表
//accessCatalog.Tables.Append(table);
#endregion
/*
* 关闭数据库连接，必须通过 ADODB 来实现，否则创建的数据库无法删除
*/
ADODB.Connection connection = accessCatalog.ActiveConnection as ADODB.Connection;
if (connection != null)
{
