C# split用法

 1string[] sss=txtQueryVal.Text.ToString().Split(new char[] {'-'});
 2
 3                    string year=sss[0].ToString();
 4                    string month=sss[1].ToString();
 5                    string day=sss[2].ToString();
 6
 7                    string selsql4="select * from OA_Worklog where Datepart(year,OA_Worklog_Day)='"+year+"'and Datepart(month,OA_W orklog_Day)='"+month+"'and Datepart(day,OA_Worklog_Day)='"+day+"'";
 8                    SqlDataAdapter sqlCom4=new SqlDataAdapter(selsql4,sqlCon);
 9                    DataSet ds=new DataSet();
10                    sqlCom4.Fill(ds,"OA_Worklog");
11                    DGrid_QueryResult.DataSource=ds.Tables["OA_Worklog"].DefaultView;
12                    DGrid_QueryResult.DataKeyField="OA_Worklog_Id";
13                    DGrid_QueryResult.DataBind();