家有小虎 » C# http://jiahu.net 我在路上, 你不在身旁. 想你的时候, 温暖依然. Sat, 06 Mar 2010 07:33:23 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Convert integer to Enum instance http://jiahu.net/convert-integer-to-enum-instance.htm http://jiahu.net/convert-integer-to-enum-instance.htm#comments Mon, 27 Oct 2008 04:19:03 +0000 o2ho http://cngator.net/?p=774 public void EnumInstanceFromInt()
{
// The .NET Framework contains an Enum called DayOfWeek.
// Let’s generate some Enum instances from int values.

// Usually you wouldn’t cast an instance of an existing Enum to an int
// in order to create an Enum instance. :-) You would have the actual
// integer value, perhaps a value from a database where the int value of
// the enum was stored.

DayOfWeek wednesday =
(DayOfWeek)Enum.ToObject(typeof(DayOfWeek), (int)DayOfWeek.Wednesday);
DayOfWeek sunday =
(DayOfWeek)Enum.ToObject(typeof(DayOfWeek), (int)DayOfWeek.Sunday);
DayOfWeek tgif =
(DayOfWeek)Enum.ToObject(typeof(DayOfWeek), (int)DayOfWeek.Friday);

lblOutput.Text = wednesday.ToString()
+ “. Int value = ” + ((int)wednesday).ToString() + “\n”;
lblOutput.Text += sunday.ToString()
+ “. Int value = ” + ((int)sunday).ToString() + “\n”;
lblOutput.Text += tgif.ToString()
+ “. Int value = ” + ((int)tgif).ToString() + “\n”;
}

Result:

Wednesday. Int value = 3
Sunday. Int value = 0
Friday. Int value = 5

Link: http://www.cambiaresearch.com/c4/52a7e5fe-c7fc-49ab-b21d-37e6194687f3/Convert-Integer-To-Enum-Instance-in-csharp.aspx

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