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Running Collection of Extension Methods
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//yeah yeah this isn't a fully formatted .cs file I know | |
//just put these somewhere, probably with the following: | |
//using System; | |
//using System.Linq; | |
//following datetime exts are good for output from db results, esp. for reporting | |
public static string ToStringOrNA(this DateTime? dt) | |
{ | |
if (dt.HasValue) | |
{ | |
return dt.Value.ToString(); | |
} | |
else | |
{ | |
return "N/A"; | |
} | |
} | |
public static string ToStringOrDefaultValue(this DateTime? dt) | |
{ | |
if (dt.HasValue) | |
{ | |
return dt.Value.ToString(); | |
} | |
else | |
{ | |
return "N/A"; | |
} | |
} | |
public static string ToShortDateStringOrNA(this DateTime? dt) | |
{ | |
if (dt.HasValue) | |
{ | |
return dt.Value.ToShortDateString(); | |
} | |
else | |
{ | |
return "N/A"; | |
} | |
} | |
public static string ToShortDateStringOrDefault(this DateTime? dt, string defaultValue) | |
{ | |
if (dt.HasValue) | |
{ | |
return dt.Value.ToshortDateString(); | |
} | |
else | |
{ | |
return defaultValue; | |
} | |
} | |
//a few more mostly for output of DB data | |
//nullDefault is usually "N/A" or "Unknown" or smtn... | |
public static string BoolToYN(this bool? value, string nullDefault) | |
{ | |
string result; | |
if (value == null) | |
{ | |
result = nullDefault; | |
} | |
else | |
{ | |
result = ((bool)value).BoolToYN(); | |
} | |
return result; | |
} | |
public static string BoolToYN(this bool value) | |
{ | |
return value ? "Yes" : "No"; | |
} | |
//quick checks of contents | |
//this is where we use LINQ | |
public static bool IsOneOf<T>(this T needle, params T[] haystack) | |
{ | |
return haystack.Contains(needle); | |
} | |
public static bool IsNoneOf<T>(this T needle, params T[] haystack) | |
{ | |
return !haystack.Contains(needle); | |
} |
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