ASP.NET的ACCESS数据库操作类

//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.4.0; " +
"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.4.0; " +
"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[0];

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.4.0; " +
"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[0];
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.4.0; " +
"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.4.0; " +
"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=0;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;
}

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.MissingSchemaAction = MissingSchemaAction.AddWithKey;
myAdpater.Fill(myDataset,strTableName);

DataRow updaterow = myDataset.Tables[strTableName].Rows.Find(strColumnValue);

for(int i=0;i {
string strColumnName = columns[i].ToString();

updaterow[strColumnName] = columnvalue[i].ToString();
}


myAdpater.Update(myDataset,strTableName);

myConnection.Close();

}

　
///
/// 删除行
///
/// 所属表
/// 主键字段名
/// 此行主键值
public void delectRow(string strTableName,string strColumnKey,string strColumnValue)
{

string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
"Data Source=" + Server.MapPath(datapatch);


string strCommandText = "select "+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,strTableName);

DataRow newrow = myDataset.Tables[strTableName].Rows.Find(strColumnValue);

newrow.Delete();

myAdpater.Update(myDataset,strTableName);

myConnection.Close();

}