I have more than one function which simply fetches data from DB. The difference among the function is the stored procedure name (uspLoadStudents,uspLoadMarks)
. To optimize, make it as one function and passes the SP.
public DataSet LoadSubjects()
{
string SqlDBConnection = Utils.GetConnectionString();
DataSet ds = new DataSet();
SqlConnection sqlConn = new SqlConnection(SqlDBConnection);
SqlCommand sqlCmd = new SqlCommand("uspLoadSubjects", sqlConn);
sqlCmd.CommandType = CommandType.StoredProcedure;
sqlConn.Open();
DataTable dt = new DataTable();
dt.Load(sqlCmd.ExecuteReader());
ds.Tables.Add(dt);
sqlConn.Close();
return ds;
}
This?
public DataSet ExecProc(string procName)
{
string SqlDBConnection = Utils.GetConnectionString();
DataSet ds = new DataSet();
SqlConnection sqlConn = new SqlConnection(SqlDBConnection);
SqlCommand sqlCmd = new SqlCommand(procName, sqlConn);
sqlCmd.CommandType = CommandType.StoredProcedure;
sqlConn.Open();
DataTable dt = new DataTable();
dt.Load(sqlCmd.ExecuteReader());
ds.Tables.Add(dt);
sqlConn.Close();
return ds;
}
try this
public static DataSet getDataSet(string sp_name, string[] param_names, object[] param_values)
{
SqlDataAdapter sqlda = new SqlDataAdapter();
SqlCommand sqlcmd = new SqlCommand();
DataSet set = new DataSet();
try
{
sqlcmd.Connection = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
sqlcmd.CommandType = CommandType.StoredProcedure;
sqlcmd.CommandText = sp_name;
sqlda.SelectCommand = sqlcmd;
sqlda.Fill(set);
}
catch (Exception ex)
{
}
finally
{
if (sqlcmd.Connection.State == ConnectionState.Open)
sqlcmd.Connection.Close();
}
return set;
}
Information like sql command, stored procedure name, should be part of your Data Access Layer
, instead it is a helper class inside the data access layer. Try this:
public static class DALHelper
{
public static DataSet ExecuteProcedure(string procedureName)
{
string sqlDBConnection = Utils.GetConnectionString();
DataSet ds = new DataSet();
using (SqlConnection sqlConn = new SqlConnection(sqlDBConnection))
{
using(SqlCommand sqlCmd = new SqlCommand(procedureName, sqlConn))
{
sqlCmd.CommandType = CommandType.StoredProcedure;
try
{
sqlConn.Open();
using (var adapter = new SqlDataAdpter(sqlCmd))
{
adapter.Fill(ds);
}
}
catch
{
throw;
}
finally
{
sqlConn.Close();
}
}
}
return ds;
}
}
Implement a method to use this helper, for sample:
public DataSet LoadSubjects()
{
return DALHelper.ExecuteProcedure("uspLoadStudents");
}
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