如何使用C#在windows窗体中显示由MSSQL Query Statistics启用的正在执行的查询%？

using System;
using System.Data.SqlClient;
using System.Windows.Forms;

namespace QueryStatisticsDemo
{
    public partial class MainForm : Form
    {
        private SqlConnection connection;

        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            // 建立与MSSQL数据库的连接
            string connectionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password";
            connection = new SqlConnection(connectionString);
            connection.Open();
        }

        private void btnExecuteQuery_Click(object sender, EventArgs e)
        {
            // 执行查询语句并获取查询结果
            string query = "SELECT * FROM TableName";
            SqlCommand command = new SqlCommand(query, connection);
            SqlDataReader reader = command.ExecuteReader();

            // 获取查询统计信息
            string statisticsQuery = "SET STATISTICS TIME ON; SET STATISTICS IO ON; " + query;
            SqlCommand statisticsCommand = new SqlCommand(statisticsQuery, connection);
            statisticsCommand.ExecuteNonQuery();

            // 读取查询统计信息中的相关字段
            string statisticsQuery = "SELECT * FROM sys.dm_exec_query_stats WHERE sql_handle IS NOT NULL";
            SqlCommand statisticsCommand = new SqlCommand(statisticsQuery, connection);
            SqlDataReader statisticsReader = statisticsCommand.ExecuteReader();

            // 计算正在执行的查询百分比
            // ...

            // 将百分比值显示在Windows窗体中的控件上
            // ...
        }
    }
}