知识大全 ASP.NET的ACCESS数据库操作类

Posted 2022-07-17 知

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　　//网上很多都是操作SQL SER 的整理了一下不是很完善但不影响使用呵呵…… //private string datapatch = ConfigurationSettings AppSettings[ acessconn ];//数据库地址 private string datapatch = db/global asa ;//数据库地址 /// /// 取得dataset // /// 查询语句 /// public DataSet GetDataSet(string Commandtext) string strConnection = Provider=Microsoft Jet OLEDB ; + Data Source= + Server MapPath(datapatch); string strCommandText = Commandtext; OleDbConnection myConnection = new OleDbConnection(strConnection); myConnection Open(); OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText myConnection); OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater); DataSet myDataset = new DataSet(); myAdpater Fill(myDataset); myConnection Close(); return myDataset; /// /// 取得表 /// /// 查询语句 /// public DataTable GetDataTable(string Commandtext) string strConnection = Provider=Microsoft Jet OLEDB ; + Data Source= + Server MapPath(datapatch); string strCommandText =Commandtext; OleDbConnection myConnection = new OleDbConnection(strConnection); myConnection Open(); OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText myConnection); OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater); DataSet myDataset = new DataSet(); myAdpater Fill(myDataset); DataTable mytable = myDataset Tables[ ]; myConnection Close(); return mytable; /// /// 取得某行的某列的值 /// /// 列的名称 /// 所属表名 /// 表的主键 /// 列所属的主键值 /// public string GetDataColum(string strColumnName string strTableName string strColumnkey string strColumnValue) string strConnection = Provider=Microsoft Jet OLEDB ; + Data Source= + Server MapPath(datapatch); string strCommandText = select +strColumnName+ +strColumnkey+ from +strTableName; OleDbConnection myConnection = new OleDbConnection(strConnection); myConnection Open();

　　OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText myConnection); OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater); DataSet myDataset = new DataSet(); myAdpater MissingSchemaAction = MissingSchemaAction AddWithKey; myAdpater Fill(myDataset); myConnection Close(); DataTable mytable = myDataset Tables[ ]; DataRow mydr = mytable Rows Find(strColumnValue); string mydc = mydr[strColumnName] ToString(); return mydc; /// /// 更新某个字段 /// /// 要更新字段名称 /// 要更新的值 /// 所属表名称 /// 表中KEY /// 表中KEY的值 public void UpdateColum(string strColumnName string strValue string strTableName string strColumnKey string strColumnValue) string strConnection = Provider=Microsoft Jet OLEDB ; + Data Source= + Server MapPath(datapatch); string strCommandText = select +strColumnKey+ +strColumnName+ from +strTableName; OleDbConnection myConnection = new OleDbConnection(strConnection); myConnection Open(); OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText myConnection); OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater); DataSet myDataset = new DataSet(); myAdpater MissingSchemaAction = MissingSchemaAction AddWithKey; myAdpater Fill(myDataset strTableName); DataRow drFindRow = myDataset Tables[strTableName] Rows Find(strColumnValue); drFindRow[strColumnName] = strValue;

　　myAdpater Update(myDataset strTableName); myConnection Close();

　　/// /// 添加行 /// /// 此行中的字段集合 /// 此行中的字段集合的对应值 /// 所属表名称 /// 表中主键 public void AddRow(string[]columns string[]columnvalue string strTableName string strColumnKey) string strConnection = Provider=Microsoft Jet OLEDB ; + Data Source= + Server MapPath(datapatch); string strColumnCount = ; foreach(string thiscolunmname in columns) strColumnCount = thiscolunmname+ +strColumnCount; string strCommandText = select +strColumnCount+strColumnKey+ from +strTableName; OleDbConnection myConnection = new OleDbConnection(strConnection); myConnection Open(); OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText myConnection); OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater); DataSet myDataset = new DataSet(); myAdpater Fill(myDataset strTableName); DataRow newrow = myDataset Tables[strTableName] NewRow(); for(int i= ;i string strColumnName = columns[i].ToString(); newrow[strColumnName] = columnvalue[i].ToString(); myDataset.Tables[strTableName].Rows.Add(newrow); myAdpater.Update(myDataset,strTableName); myConnection.Close(); /// /// 更新数据行 /// /// 要更新的列集合 /// 要更新的列集合的对应值 /// 所属表名称 /// 表主键 /// 行所属的ＩＤ public void updateRow(string[]columns,string[]columnvalue,string strTableName,string strColumnKey,string strColumnValue) string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " + "Data Source=" + Server.MapPath(datapatch); string strColumnCount = ""; foreach(string thiscolunmname in columns) strColumnCount = thiscolunmname+","+strColumnCount;

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