public static string constr="server=.;database=数据库名;uid=sa;pwd=123456";
public static SqlConnection con=new SqlConnection (constr);
public static DataTable GetDataTable(string sql)
{
con.Open();
SqlDataAdapter da=new SqlDataAdapter (sql,con);
DataTable dt=new DataTable ();
da.Fill (dt);
con.Close ();
return dt;
}
public static bool executenonquery(string sql)
{
con.Open ();
SqlCommand cmd=new SqlCommand (sql ,con);
int num=cmd.ExecuteNonQuery ();
con.Close();
return num>0;
}
public static SqlConnection con=new SqlConnection (constr);
public static DataTable GetDataTable(string sql)
{
con.Open();
SqlDataAdapter da=new SqlDataAdapter (sql,con);
DataTable dt=new DataTable ();
da.Fill (dt);
con.Close ();
return dt;
}
public static bool executenonquery(string sql)
{
con.Open ();
SqlCommand cmd=new SqlCommand (sql ,con);
int num=cmd.ExecuteNonQuery ();
con.Close();
return num>0;
}