c# - C#如何计算sql表的行数？

Question

如何在c#中统计sql表的行数？ 我需要从我的数据库中提取一些数据...

Answer 1

你可以这样尝试:

select count(*) from tablename where columname = 'values'

C# 代码将是这样的:-

public int A()
{
   string stmt = "SELECT COUNT(*) FROM dbo.tablename";
   int count = 0;

   using(SqlConnection thisConnection = new SqlConnection("Data Source=DATASOURCE"))
   {
       using(SqlCommand cmdCount = new SqlCommand(stmt, thisConnection))
       {
           thisConnection.Open();
           count = (int)cmdCount.ExecuteScalar();
       }
   }
   return count;
}