本文整理汇总了C#中Option.Where方法的典型用法代码示例。如果您正苦于以下问题：C# Option.Where方法的具体用法？C# Option.Where怎么用？C# Option.Where使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Option的用法示例。
在下文中一共展示了Option.Where方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetDisplayValue
public static string GetDisplayValue(object value, string type, KeyValueList<string, string> typeHints, Option[] options)
{
string text;
try
{
var format = typeHints["DisplayFormat"];
switch (type)
{
case DataTypes.Time:
case DataTypes.NullableTime:
{
if (value != null)
{
var time = (TimeSpan)value;
text = string.Format(CultureInfo.CurrentCulture, format ?? "{0:" + CultureInfo.CurrentCulture.DateTimeFormat.ShortTimePattern + "}", new DateTime(1, 1, 1, time.Hours, time.Minutes, time.Seconds, time.Milliseconds));
}
else
text = string.Empty;
break;
}
case DataTypes.Date:
case DataTypes.NullableDate:
text = value != null ? string.Format(CultureInfo.CurrentCulture, format ?? "{0:" + CultureInfo.CurrentCulture.DateTimeFormat.LongDatePattern.Replace("dddd", null).Trim(',', ' ') + "}", value) : string.Empty;
break;
case DataTypes.DateTime:
case DataTypes.NullableDateTime:
text = value != null ? string.Format(CultureInfo.CurrentCulture, format ?? "{0:" + CultureInfo.CurrentCulture.DateTimeFormat.LongDatePattern.Replace("dddd", null).Trim(',', ' ') + " " + CultureInfo.CurrentCulture.DateTimeFormat.ShortTimePattern + "}", value) : string.Empty;
break;
case DataTypes.DateTimeOffset:
case DataTypes.NullableDateTimeOffset:
text = value != null ? string.Format(CultureInfo.CurrentCulture, format ?? "{0:" + CultureInfo.CurrentCulture.DateTimeFormat.LongDatePattern.Replace("dddd", null).Trim(',', ' ') + " " + CultureInfo.CurrentCulture.DateTimeFormat.ShortTimePattern + " (UTCzzz)}", value) : string.Empty;
break;
case DataTypes.Boolean:
case DataTypes.NullableBoolean:
text = value != null ? Service.Current.Messages[((bool)value) ? (typeHints["TrueKey"] ?? "True") : (typeHints["FalseKey"] ?? "False")] : string.Empty;
break;
case DataTypes.YesNo:
text = value != null ? Service.Current.Messages[((bool)value) ? (typeHints["TrueKey"] ?? "Yes") : (typeHints["FalseKey"] ?? "No")] : string.Empty;
break;
case DataTypes.KeyValueList:
text = Convert.ToString(value);
if (options != null && options.Length > 0)
{
foreach (var option in options.Where(option => (option.Key) == text))
{
text = option.DisplayValue;
break;
}
}
break;
case DataTypes.BinaryFile:
{
var str = (value as String) ?? string.Empty;
text = str.Split('|').FirstOrDefault();
}
break;
default:
text = value != null ? string.Format(CultureInfo.CurrentCulture, format ?? "{0}", value) : string.Empty;
break;
}
}
catch
{
text = value != null ? value.ToString() : string.Empty;
}
return text;
}示例2: TestIEnumerableHelper
private static void TestIEnumerableHelper(Option<int> o)
{
var select = o.Select(x => x);
Assert.AreEqual(o.HasValue ? 1 : 0, select.Count());
select = o.Select((x, index) => x);
Assert.AreEqual(o.HasValue ? 1 : 0, select.Count());
var where = o.Where(x => true);
Assert.AreEqual(o.HasValue ? 1 : 0, where.Count());
where = o.Where((x, index) => true);
Assert.AreEqual(o.HasValue ? 1 : 0, where.Count());
var toArr = o.ToArray();
Assert.AreEqual(o.HasValue ? 1 : 0, toArr.Length);
if (o.HasValue)
{
var aggregate = o.Aggregate((acc, val) => acc + val);
Assert.AreEqual(o.ValueOrDefault, aggregate);
aggregate = o.Aggregate(0, (acc, val) => acc + val);
Assert.AreEqual(o.ValueOrDefault, aggregate);
}
bool run = false;
foreach (var obj in ((System.Collections.IEnumerable)o))
{
run = true;
Assert.AreEqual(1, (int)obj);
}
Assert.AreEqual(run, o.HasValue);
run = false;
o.ForEach((val) => run = true);
Assert.AreEqual(run, o.HasValue);
}