【C#】验证输入的日期格式

场景描述：输入格式必须满足8:00-9:00;13:00-14:00和2022.01.01;2022.02.02-2022.02.07

#region 校验时间格式
//校验配送时间段格式
try
{
    string[] strs = SendTime.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
    foreach (string str in strs)
    {
        string[] times = str.Split(new[] { '-' }, StringSplitOptions.RemoveEmptyEntries);
        foreach (string time in times)
        {
            var temp = Convert.ToDateTime(string.Format("{0} {1}", DateTime.Now.ToString("d"), time));
        }
    }
}
catch (Exception e)
{
    resultInfo.result = "2";
    resultInfo.message = "配送时间段格式不正确";
    context.Response.Write(Newtonsoft.Json.JsonConvert.SerializeObject(resultInfo)); return;
}
//校验不可配送日期
try
{
    string[] strs = UnSendDate.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
    foreach (string str in strs)
    {
        string[] dates = str.Split(new[] { '-' }, StringSplitOptions.RemoveEmptyEntries);
        //验证不可配送日期格式
        foreach (string date in dates)
        { 
            DateTime.ParseExact(date, "yyyy.MM.dd", System.Globalization.CultureInfo.InvariantCulture);
        }
        //验证不可配送日期范围
        if (dates.Length == 2)
        {
            if (Convert.ToDateTime(dates[1].ToString()) < Convert.ToDateTime(dates[0].ToString()))
            {
                resultInfo.result = "2";
                resultInfo.message = "不可配送截止日期不能小于开始日期";
                context.Response.Write(Newtonsoft.Json.JsonConvert.SerializeObject(resultInfo));
                return;
            }
        }
    }
}
catch (Exception e)
{
    resultInfo.result = "2";
    resultInfo.message = "不可配送日期格式不正确";
    context.Response.Write(Newtonsoft.Json.JsonConvert.SerializeObject(resultInfo));
    return;
}
#endregion