access|asp.net|数据|数据库
ASP.NET[C#]的ACCESS数据库操作类
//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.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<columns.Length;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<columns.Length;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();
}
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