.Net 與資料庫溝通
Sample Code:
//開啟連線
public static SqlConnection OpenSqlConn(string Server, string Database, string dbuid, string dbpwd)
{
string cnstr = string.Format("server={0};database={1};uid={2};pwd={3};Connect Timeout = 180", Server, Database, dbuid, dbpwd);
SqlConnection icn = new SqlConnection();
icn.ConnectionString = cnstr;
if (icn.State == ConnectionState.Open) icn.Close();
icn.Open();
return icn;
}
//查詢
public static DataTable GetSqlDataTable(string Server, string Database, string dbuid, string dbpwd, string SqlString)
{
DataTable myDataTable = new DataTable();
SqlConnection icn = null;
icn = OpenSqlConn(Server, Database, dbuid, dbpwd);
SqlCommand isc = new SqlCommand();
SqlDataAdapter da = new SqlDataAdapter(isc);
isc.Connection = icn;
isc.CommandText = SqlString;
isc.CommandTimeout = 600;
DataSet ds = new DataSet();
ds.Clear();
da.Fill(ds);
myDataTable = ds.Tables[0];
if (icn.State == ConnectionState.Open) icn.Close();
return myDataTable;
}
//新增,刪除,修改
public static void SqlInsertUpdateDelete(string Server, string Database, string dbuid, string dbpwd, string SqlSelectString)
{
SqlConnection icn = OpenSqlConn(Server, Database, dbuid, dbpwd);
SqlCommand cmd = new SqlCommand(SqlSelectString, icn);
SqlTransaction mySqlTransaction = icn.BeginTransaction();
try
{
cmd.Transaction = mySqlTransaction;
cmd.ExecuteNonQuery();
mySqlTransaction.Commit();
}
catch (Exception ex)
{
mySqlTransaction.Rollback();
throw (ex);
}
if (icn.State == ConnectionState.Open) icn.Close();
}
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