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struct System.Guid
Assembly: System.Runtime
Represents a globally unique identifier (GUID).
Fields and Constants
public static readonly
Guid
Empty
A read-only instance of the <see cref="T:System.Guid" /> structure whose value is all zeros.
Properties
public
int
Variant
Gets the value of the variant field for the <see cref="T:System.Guid" /> .
public
int
Version
Gets the value of the version field for the <see cref="T:System.Guid" /> .
Methods
public
int
CompareTo(Guid value)
value
An object to compare to this instance.
Returns A signed number indicating the relative values of this instance and <paramref name="value" /> .
<list type="table">
<listheader>
<term> Return value</term>
<description> Description</description>
</listheader>
<item>
<term> A negative integer</term>
<description> This instance is less than <paramref name="value" />.</description>
</item>
<item>
<term> Zero</term>
<description> This instance is equal to <paramref name="value" />.</description>
</item>
<item>
<term> A positive integer</term>
<description> This instance is greater than <paramref name="value" />.</description>
</item>
</list>
Compares this instance to a specified <see cref="T:System.Guid" /> object and returns an indication of their relative values.
public
int
CompareTo(object value)
value
An object to compare, or <see langword="null" /> .
Returns A signed number indicating the relative values of this instance and <paramref name="value" /> .
<list type="table">
<listheader>
<term> Return value</term>
<description> Description</description>
</listheader>
<item>
<term> A negative integer</term>
<description> This instance is less than <paramref name="value" />.</description>
</item>
<item>
<term> Zero</term>
<description> This instance is equal to <paramref name="value" />.</description>
</item>
<item>
<term> A positive integer</term>
<description> This instance is greater than <paramref name="value" />, or <paramref name="value" /> is <see langword="null" />.</description>
</item>
</list>
Compares this instance to a specified object and returns an indication of their relative values.
public
bool
Equals(Guid g)
g
An object to compare to this instance.
Returns <see langword="true" /> if <paramref name="g" /> is equal to this instance; otherwise, <see langword="false" /> .
Returns a value indicating whether this instance and a specified <see cref="T:System.Guid" /> object represent the same value.
public
bool
Equals(object o)
o
The object to compare with this instance.
Returns <see langword="true" /> if <paramref name="o" /> is a <see cref="T:System.Guid" /> that has the same value as this instance; otherwise, <see langword="false" /> .
Returns a value that indicates whether this instance is equal to a specified object.
public
int
GetHashCode() Returns The hash code for this instance.
Returns the hash code for this instance.
public
byte[]
ToByteArray() Returns A 16-element byte array.
Returns a 16-element byte array that contains the value of this instance.
public
byte[]
ToByteArray(bool bigEndian)
public
string
ToString() Returns The value of this <see cref="T:System.Guid" /> , formatted by using the "D" format specifier as follows:
<c>xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx</c>
where the value of the GUID is represented as a series of lowercase hexadecimal digits in groups of 8, 4, 4, 4, and 12 digits and separated by hyphens. An example of a return value is "382c74c3-721d-4f34-80e5-57657b6cbc27". To convert the hexadecimal digits from a through f to uppercase, call the <see cref="M:System.String.ToUpper" /> method on the returned string.
Returns a string representation of the value of this instance in registry format.
public
string
ToString(string format)
format
A single format specifier that indicates how to format the value of this <see cref="T:System.Guid" /> . The <paramref name="format" /> parameter can be "N", "D", "B", "P", or "X". If <paramref name="format" /> is <see langword="null" /> or an empty string (""), "D" is used.
Returns The value of this <see cref="T:System.Guid" /> , represented as a series of lowercase hexadecimal digits in the specified format.
Returns a string representation of the value of this <see cref="T:System.Guid" /> instance, according to the provided format specifier.
public
string
ToString(string format,
IFormatProvider provider)
format
A single format specifier that indicates how to format the value of this <see cref="T:System.Guid" /> . The <paramref name="format" /> parameter can be "N", "D", "B", "P", or "X". If <paramref name="format" /> is <see langword="null" /> or an empty string (""), "D" is used.
provider
(Reserved) An object that supplies culture-specific formatting information.
Returns The value of this <see cref="T:System.Guid" /> , represented as a series of lowercase hexadecimal digits in the specified format.
Returns a string representation of the value of this instance of the <see cref="T:System.Guid" /> class, according to the provided format specifier and culture-specific format information.
protected
void
Finalize()
Inherited from object
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
public
Type
GetType()
Inherited from object
Returns The exact runtime type of the current instance.
Gets the <see cref="T:System.Type" /> of the current instance.
protected
object
MemberwiseClone()
Inherited from object
Returns A shallow copy of the current <see cref="T:System.Object" /> .
Creates a shallow copy of the current <see cref="T:System.Object" /> .