C# 获取Access数据库中所有表名及其列名、列类型

摘要：

DataTable tables = connnection.GetOleDbSchemaTable( OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });

DataTable schemaTable = connnection.GetOleDbSchemaTable (OleDbSchemaGuid.Columns, new object[] { null, null, tblName, null });

下面贴出代码：

        /// <summary>
        /// 获取Access数据库中指定表的所有列
        /// </summary>
        private List<string> getExcelTableColumn(string tableName)
        {
            //获取表名
            string tblName = tableName.Trim();
            List<string> list = new List<string>();
            if (string.IsNullOrEmpty(tblName))
            {
                return list;
            }
            //
            OpenFileDialog of = new OpenFileDialog();
            of.Filter = "Access文件(*.mdb)|*.mdb";
            if (of.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                try
                {
                    string myString = "Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =  " + of.FileName + ";";
                    OleDbConnection oconn = new OleDbConnection(myString);
                    oconn.Open();

                    //获取表中的所有列信息
                    DataTable schemaTable = oconn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, tblName, null });
                    //获取到列名称
                    foreach (DataRow row in schemaTable.Rows)
                    {
                        list.Add(row["column_name"].ToString());
                    }
                }
                catch (Exception exc)
                {
                    //PublicMethod.MessageError("加载Access文件过程发生异常，请重试！");
                }
            }
            return list;
        }

        /// <summary>
        /// 获取Access数据库中指定表的所有列
        /// </summary>
        /// <param name="con">连库字符串</param>
        /// <param name="tableName">表名称</param>
        /// <returns></returns>
        private List<string> getExcelTableColumn(string con, string tableName)
        {
            //获取表名
            string tblName = tableName.Trim();
            List<string> list = new List<string>();
            if (string.IsNullOrEmpty(tblName))
            {
                return list;
            }
            //
            try
            {
                OleDbConnection oconn = new OleDbConnection(con);
                oconn.Open();

                //获取表中的所有列信息
                DataTable schemaTable = oconn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, tblName, null });
                //获取到列名称
                foreach (DataRow row in schemaTable.Rows)
                {
                    list.Add(row["column_name"].ToString());
                }
            }
            catch (Exception exc)
            {
                //PublicMethod.MessageError("加载Access文件过程发生异常，请重试！");
            }
            return list;
        }

        /// <summary>
        /// 获取Access数据库中所有表名称
        /// </summary>
        private List<string> getExcelTables()
        {
            List<string> list = new List<string>();
            OpenFileDialog of = new OpenFileDialog();
            of.Filter = "Access文件(*.mdb)|*.mdb";
            if (of.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                try
                {
                    string conStr = "Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =  " + of.FileName + ";";
                    OleDbConnection oconn = new OleDbConnection(conStr);
                    oconn.Open();

                    //获取库中的所有表信息
                    DataTable tables = oconn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
                    foreach (DataRow item in tables.Rows)
                    {
                        list.Add(item["table_name"].ToString());
                        getExcelTableColumn(conStr,item["table_name"].ToString());//可以在这获取下表的列
                    }
                }
                catch (Exception exc)
                {
                    //PublicMethod.MessageError("加载Access文件过程发生异常，请重试！");
                }
            }
            return list;
        }