啟動介面新增

1、引用新增

using System.Runtime.InteropServices;

2、方法新增

  [DllImport("kernel32.dll", EntryPoint = "GetSystemDefaultLCID")]
        public static extern int GetSystemDefaultLCID();
        [DllImport("kernel32.dll", EntryPoint = "SetLocaleInfoA")]
        public static extern int SetLocaleInfo(int
 
 Locale, int LCType, string lpLCData);
        public const int LOCALE_SLONGDATE = 0x20;
        public const int LOCALE_SSHORTDATE = 0x1F;
        public const int LOCALE_STIME = 0x1003;

        public void SetDateTimeFormat()
        {
            try
            {
                int x = GetSystemDefaultLCID();
                SetLocaleInfo(x, LOCALE_STIME, 
 
"HH:mm:ss");        //時間格式
                SetLocaleInfo(x, LOCALE_SSHORTDATE, "yyyy-MM-dd");   //短日期格式  
                SetLocaleInfo(x, LOCALE_SLONGDATE, "yyyy-MM-dd");   //長日期格式 
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
        }

    }
 

3、在啟動介面的Load事件呼叫方法

 SetDateTimeFormat();