mp-ap-v2/Util/StringExtension.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;

namespace MySystem
{
    public static class StringBuilderExtension
    {
        public static void Condition(this StringBuilder input, string field, object val)
        {
            if(typeof(int) == val.GetType() || typeof(decimal) == val.GetType())
            {
                input.Append(" and " + field + "=" + val);
            }
            else
            {
                input.Append(" and " + field + "='" + val + "'");
            }
        }

        public static void ConditionLike(this StringBuilder input, string field, object val)
        {
            input.Append(" and " + field + " like '%" + val + "%'");
        }
    }
}