C# 如何确定SQL Server 中数据表是否存在

using System;
using System.Data;
using System.Data.SqlClient;

namespace ScratchLine.cn
{
    public class Table
    {
        public Table()
        {

        }
        /// <summary>
        /// 判断数据库中名为tableName的表是否存在
        /// </summary>
        /// <param name="tableName">要查询的表名</param>
        /// <param name="connectionString">数据库连接字符串</param>
        /// <returns></returns>
        public bool Exist(string tableName, string connectionString)
        {
            bool bExist = false;
            SqlConnection _Connection = new SqlConnection(connectionString);
            try
            {
                _Connection.Open();
                using (DataTable dt = _Connection.GetSchema("Tables"))
                {
                    foreach (DataRow dr in dt.Rows)
                    {
                        if (string.Equals(tableName, dr[2].ToString()))
                        {
                            bExist = true;
                            break;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                _Connection.Dispose();
            }

            return bExist;
        }
    }
}