大约有 43,000 项符合查询结果（耗时：0.0416秒） [XML]
The Role Manager feature has not been enabled
...ork becuase you need to cast userid to int such that: userManager.GetRoles(Convert.ToInt32(User.Identity.GetUserId<int>()));
– toy
Jul 25 '17 at 22:47
...
Why do we have to specify FromBody and FromUri?
...s TimeSpan, DateTime, Guid, decimal, and string, plus any type with a type converter that can convert from a string.
For complex types, Web API tries to read the value from the message body, using a media-type formatter.
So, if you want to override the above default behaviour and force Web API to ...
Load a WPF BitmapImage from a System.Drawing.Bitmap
....NET 3.0+) that do the conversion. :)
/// <summary>
/// Converts a <see cref="System.Drawing.Image"/> into a WPF <see cref="BitmapSource"/>.
/// </summary>
/// <param name="source">The source image.</param>
/// <returns>A BitmapSourc...
Difference between DirectCast() and CType() in VB.NET
.... It will do things you just can't do with a simple (int)-style cast, like convert a string to an integer. It has as much power as calling Convert.To___() in C#, where the ___ is the target type of your cast.
This is desirable because it's very powerful. However, this power comes at the cost of per...
Pointers in C: when to use the ampersand and the asterisk?
...
Arrays are special and can be converted to pointers transparently. This highlights another way to get from a pointer to a value, I'll add it to the explanation above.
– Dan Olson
Jan 19 '10 at 18:58
...
Spring MVC: How to return image in @ResponseBody?
...ing annotation. Example below works for me out of box. No need of register converter or anything else if you have web mvc enabled (@EnableWebMvc).
@ResponseBody
@RequestMapping(value = "/photo2", method = RequestMethod.GET, produces = MediaType.IMAGE_JPEG_VALUE)
public byte[] testphoto() throws IOE...
Convert a timedelta to days, hours and minutes
... // 3600, td.seconds // 60 % 60
As for DST, I think the best thing is to convert both datetime objects to seconds. This way the system calculates DST for you.
>>> m13 = datetime(2010, 3, 13, 8, 0, 0) # 2010 March 13 8:00 AM
>>> m14 = datetime(2010, 3, 14, 8, 0, 0) # DST starts...
Static/Dynamic vs Strong/Weak
...e run-time effect of simply returning its argument, but at compile time it converts a value of any type to one of any other type. My favorite example is Modula-3, whose designers called their type-casting construct LOOPHOLE.
Having said that, you can't count on any two people using the words "stro...
How to convert a PIL Image into a numpy array?
Alright, I'm toying around with converting a PIL image object back and forth to a numpy array so I can do some faster pixel by pixel transformations than PIL's PixelAccess object would allow. I've figured out how to place the pixel information in a useful 3D numpy array by way of:
...
Calculate a MD5 hash from a string
...nput);
byte[] hashBytes = md5.ComputeHash(inputBytes);
// Convert the byte array to hexadecimal string
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hashBytes.Length; i++)
{
sb.Append(hashBytes[i].ToString("X2"));
}
...