public static DateTime?ConvertDV(string expression)
{
DateTime?dtReturn = null;
string str1 = null;
string str2 = null;
if (expression.IndexOf(",{") > 0)
{
MatchCollection matches = Regex.Matches(expression, @"#DV\((?<c>.*?),{(?<h>.*?)}");
foreach (Match match in matches)
{
GroupCollection groups = match.Groups;
string _1 = groups["c"].Value;
if (_1 != null)
{
str1 = groups["c"].Value;
}
string _2 = groups["h"].Value;
if (_2 != null)
{
str2 = groups["h"].Value;
}
}
}
else
{
MatchCollection matches = Regex.Matches(expression, @"#DV\((?<c>.*?)\)");
foreach (Match match in matches)
{
GroupCollection groups = match.Groups;
string _1 = groups["c"].Value;
if (_1 != null)
{
str1 = groups["c"].Value;
}
}
}
try
{
if (str1 == null)
{
throw new Exception("AY日期表达式中DV片段有错误");
}
dtReturn = Convert(str1);
if (str2 != null)
{
AyDCDateExpression _ewai = AyJsonUtility.DecodeObject2 <AyDCDateExpression>(str2);
//开始处理
if (_ewai.y != 0)
{
dtReturn = dtReturn.Value.AddYears(_ewai.y);
}
if (_ewai.M != 0)
{
dtReturn = dtReturn.Value.AddMonths(_ewai.M);
}
if (_ewai.d != 0)
{
dtReturn = dtReturn.Value.AddDays(_ewai.d);
}
if (_ewai.H != 0)
{
dtReturn = dtReturn.Value.AddHours(_ewai.H);
}
if (_ewai.m != 0)
{
dtReturn = dtReturn.Value.AddMinutes(_ewai.m);
}
if (_ewai.s != 0)
{
dtReturn = dtReturn.Value.AddSeconds(_ewai.s);
}
}
}
catch
{
throw new Exception("AY日期表达式中DV片段中的时间部分不能转换成有效的DateTime");
}
return(dtReturn);
}
public static DateTime?ConvertD(string dt, string expression, string fmt)
{
DateTime?dtReturn = null;
//读取文本框的值
if (dt.IsNullAndTrimAndEmpty())
{
return(dtReturn);
}
else
{
MatchCollection matches = Regex.Matches(expression, @"#D\(ay,{(?<c>.*?)}\)");
List <string> strs = new List <string>();
foreach (Match match in matches)
{
GroupCollection groups = match.Groups;
string _1 = groups["c"].Value;
if (_1 != null)
{
strs.Add(groups["c"].Value);
}
}
if (strs.Count > 0)
{
AyDCDateExpression _ewai = AyJsonUtility.DecodeObject2 <AyDCDateExpression>(strs[0]);
try
{
string[] expectedFormats = { fmt };
dtReturn = DateTime.ParseExact(dt, expectedFormats, AyDatePickerHelper.culture, DateTimeStyles.None);
}
catch
{
throw new Exception("AY日期表达式 D函数表达式发生问题");
}
//dtReturn = dt.ToDateTime();
//开始处理
if (_ewai.y != 0)
{
dtReturn = dtReturn.Value.AddYears(_ewai.y);
}
if (_ewai.M != 0)
{
dtReturn = dtReturn.Value.AddMonths(_ewai.M);
}
if (_ewai.d != 0)
{
dtReturn = dtReturn.Value.AddDays(_ewai.d);
}
if (_ewai.H != 0)
{
dtReturn = dtReturn.Value.AddHours(_ewai.H);
}
if (_ewai.m != 0)
{
dtReturn = dtReturn.Value.AddMinutes(_ewai.m);
}
if (_ewai.s != 0)
{
dtReturn = dtReturn.Value.AddSeconds(_ewai.s);
}
return(dtReturn);
}
else
{
//这里要换成 tryparseextra方式的时间，如果转换失败就当空白处理
dtReturn = dt.ToDateTime();
return(dtReturn);
}
}
}
