public override DataSet Clone()
{
dtTKDGTre cln = ((dtTKDGTre)(base.Clone()));
cln.InitVars();
return(cln);
}
private void frmTKDGTre_Load(object sender, System.EventArgs e)
{
dtTKDGTre myDataSet = new dtTKDGTre();
string sql = "select * from docgia";
SqlConnection con = new SqlConnection(SqlHelper.ConnectString);
SqlDataAdapter adapter = new SqlDataAdapter(sql, con);
adapter.Fill(myDataSet, "docgia");
sql = "select * from muonsach where ngaymuon>='" +
SqlHelper.dTuNgay + "' and ngaymuon<='" + SqlHelper.dDenNgay + "'";
con = new SqlConnection(SqlHelper.ConnectString);
adapter = new SqlDataAdapter(sql, con);
adapter.Fill(myDataSet, "muonsach");
sql = "select * from chitietphieumuon" +
" inner join muonsach on chitietphieumuon.sophieumuon=muonsach.sophieumuon" +
" where hantra<'" + DateTime.Now + "'";
con = new SqlConnection(SqlHelper.ConnectString);
adapter = new SqlDataAdapter(sql, con);
adapter.Fill(myDataSet, "chitietphieumuon");
rptTKDGTre1 = new rptTKDGTre();
rptTKDGTre1.SetDataSource(myDataSet);
ReportViewer.ReportSource = rptTKDGTre1;
}