C#字符串转datatime出错，代码如下，如果不传参，直接把时间写到方法里就没错误，为什么呢？
static void Main(string[] args)
{
int j = sqlQueryTable("Data Source=ZHANGL;Initial Catalog=db_GVM;Integrated Security=True", "2012/11/4 12:41:16", "2012/11/4 12:41:56"); Console.WriteLine(j);
Console.ReadKey();
}
public static int sqlQueryTable(string specConnection, String startdatetime, String enddatetime)
{
int i = 0;
try { using (SqlConnection conn = new SqlConnection(specConnection)) { string strCmd = "select count(*) from tb_PDU where datetime >= 'startdatetime' and datetime <= 'enddatetime' "; conn.Open(); SqlCommand sqlCmd = new SqlCommand(strCmd, conn); i = Convert.ToInt32(sqlCmd.ExecuteScalar()); conn.Close(); } } catch (Exception ex) { Console.WriteLine(ex.Message + ex.Source); } return i; }
