String dd_webCofig = ConfigurationManager.ConnectionStrings["server132"].ConnectionString;
    SqlConnection ddlistconn = new SqlConnection(dd_webCofig);
    ddlistconn.Open();

    string ddlist = "select count(*) from jud_order where complex_name=@a and case_no=@b and sign=@c and jud_order_date=@d and user_code=@e";
    SqlCommand ddlistCmd = new SqlCommand(ddlist, ddlistconn);
    ddlistCmd.Parameters.AddWithValue("a", "a");
    ddlistCmd.Parameters.AddWithValue("b", "a");
    ddlistCmd.Parameters.AddWithValue("c", "a");
    ddlistCmd.Parameters.AddWithValue("d", "a");
    ddlistCmd.Parameters.AddWithValue("e", "a");

    SqlDataReader myReader = ddlistCmd.ExecuteReader();

我有上面的查询,它返回行数,现在我的问题是如何读取查询的输出?
我想要的是
 if(count=0)
{
   //Do
}
else if(counnt >0)
{
    //Do something else
}

最佳答案

您想使用ExecuteScalar();来代替它,它将返回一个结果。
所以这句话:

ddlistCmd.ExecuteReader();

应该是:
ddlistCmd.ExecuteScalar();

然后可以在键入casting结果后将其分配给count

10-04 15:13