tagged [guid]
Generate a UUID on iOS from Swift
Generate a UUID on iOS from Swift In my iOS Swift app I want to generate random UUID () strings for use as a table key, and this snippet to work: Is this safe? Or is there perhaps a better (recommende...
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- 25 Apr at 19:40
Guid.Parse() or new Guid() - What's the difference?
Guid.Parse() or new Guid() - What's the difference? What is the difference between these two ways of converting a string to `System.Guid`? Is there a reason to choose one over the other? or
Is the format of GUID always the same?
Is the format of GUID always the same? GUID you get something like aaaef973-d8ce-4c92-95b4-3635bb2d42d5 Is it always the same? Is it always going to have the following format 8 char "-", 4 char "-", 4...
How to make sure a generated guid is unique globally?
How to make sure a generated guid is unique globally? Let's say I want to set a guid to be my application's assembly guid. As searched from internet, we can use `(new Guid()).Next()` to get a new uniq...
Convert from Oracle's RAW(16) to .NET's GUID
Convert from Oracle's RAW(16) to .NET's GUID I'm having difficulties manually debugging an .NET application where the Guid values differ from .NET to Oracle. - - `17D89D326C2142D69B989F5201288DBF`- - ...
long vs Guid for the Id (Entity), what are the pros and cons
long vs Guid for the Id (Entity), what are the pros and cons I am doing a web-application on asp.net mvc and I'm choosing between the long and Guid data type for my entities, but I don't know which on...
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- 9 Feb at 11:23
Create a Guid from an int
Create a Guid from an int Given an `int`, how can you create the same Guid repeatedly? I'm integrating two systems, one uses ints as a primary key, the other recognises an object by it's Guid. Because...
Should I Use Path.GetRandomFileName or use a Guid?
Should I Use Path.GetRandomFileName or use a Guid? I need to generate unique folder names, should I use [Path.GetRandomFileName](http://msdn.microsoft.com/en-us/library/system.io.path.getrandomfilenam...
"Cannot implicitly convert type 'System.Guid?' to 'System.Guid'." - Nullable GUID
"Cannot implicitly convert type 'System.Guid?' to 'System.Guid'." - Nullable GUID In my database, in one of the table I have a GUID column with allow nulls. I have a method with a Guid? parameter that...
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- 4 Mar at 15:3
What does the GUID in C# Programs in the AssemblyInfo.cs?
What does the GUID in C# Programs in the AssemblyInfo.cs? I'm wondering for what the GUID in the AssemblyInfo.cs in C# Programs is: `[assembly: Guid("a4df9f47-b2d9-49a9-b237-09220857c051")]` The comme...
Simple proof that GUID is not unique
Simple proof that GUID is not unique I'd like to prove that a GUID is not unique in a simple test program. I expected the following code to run for hours, but it's not working. How can I make it work?...
Guid is all 0's (zeros)?
Guid is all 0's (zeros)? I'm testing out some WCF services that send objects with Guids back and forth. In my web app test code, I'm doing the following: For some reason, the call to is generating Gui...
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- 2 Nov at 19:28
Is it good idea to remove dash from a GUID?
Is it good idea to remove dash from a GUID? I have code which replaces the dash with empty strings in a GUID. Would that remove the uniqueness of the guid? Also can someone confirm this too? We are st...
Guid Uniqueness On different machine
Guid Uniqueness On different machine > [Is a GUID unique 100% of the time?](https://stackoverflow.com/questions/39771/is-a-guid-unique-100-of-the-time) After reading all posts on Guid, still I am un...
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- 23 May at 12:26
Check if Nullable Guid is empty in c#
Check if Nullable Guid is empty in c# Quoting from an answer from [this](https://stackoverflow.com/questions/9837602/why-isnt-there-a-guid-isnullorempty-method) question. > Guid is a value type, so a ...
Questions about GUID's: Are they always fixed in length, and is the middle number always 4?
Questions about GUID's: Are they always fixed in length, and is the middle number always 4? I just generated a few million GUID's turned them into a String and got the length... it was always the same...
Performance - using Guid object or Guid string as Key
Performance - using Guid object or Guid string as Key When using a `Guid` as an index for a `Dictionary`, is it better to use the `Guid` object, or the string representation of the Guid? I just refact...
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- 9 Dec at 17:58
Are automatically generated GUIDs for types in .NET consistent?
Are automatically generated GUIDs for types in .NET consistent? Are the automatically generated GUIDs for C# Types consistent? For example, if I get a GUID for my interface, IFoo (`typeof(IFoo).GUID`)...
Why isn't Guid.ToString("n") the same as a hex string generated from a byte array of the same guid?
Why isn't Guid.ToString("n") the same as a hex string generated from a byte array of the same guid? Consider the following unit test: ``` [TestMethod] public void TestByteToString() { var guid...
C# 4.0 Optional Parameters - How to Specify Optional Parameter of Type "Guid"?
C# 4.0 Optional Parameters - How to Specify Optional Parameter of Type "Guid"? Here's my method: `userId` is giving me an error as it must be a compile-time constant, which i understand. But even when...
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- 4 Aug at 00:36
How to generate UUID version 4 using c#
How to generate UUID version 4 using c# My requirement is to generate version 4 UUID from C# code for google API session token and i am not sure `Guid.NewGuid()` method, Which version of GUID does it ...
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- 24 Apr at 06:12
Different casting of int to guid in C# and SQL Server
Different casting of int to guid in C# and SQL Server When converting int to guid in C# and SQL Server I get different values. In C# I use this method ``` public static Guid Int2Guid( int value ) { ...
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- 29 Oct at 10:53
Is it possible that GUIDs are generated with all the same characters in .NET? (e. g.: {11111111-1111-1111-1111-111111111111})
Is it possible that GUIDs are generated with all the same characters in .NET? (e. g.: {11111111-1111-1111-1111-111111111111}) We use GUIDs extensively in our database design; Business Object propertie...
Get Window handle (IntPtr) from Selenium webdriver's current window GUID
Get Window handle (IntPtr) from Selenium webdriver's current window GUID I'm trying to capture a screenshot of whole browser screen (e.g. with any toolbars, panels and so on) not only an entire page, ...