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Showing content from https://learn.microsoft.com/en-us/dotnet/api/system.uri.-ctor below:

Uri Constructor (System) | Microsoft Learn

Source:
Uri.cs
Source:
Uri.cs
Source:
Uri.cs
Source:
Uri.cs

Caution

This constructor has been deprecated; the dontEscape parameter is always false. Use Uri(Uri, string) instead.

Initializes a new instance of the Uri class based on the specified base and relative URIs, with explicit control of character escaping.

public:
 Uri(Uri ^ baseUri, System::String ^ relativeUri, bool dontEscape);
[System.Obsolete("This constructor has been deprecated; the dontEscape parameter is always false. Use Uri(Uri, string) instead.")]
public Uri(Uri baseUri, string? relativeUri, bool dontEscape);
[System.Obsolete("The constructor has been deprecated. Please new Uri(Uri, string). The dontEscape parameter is deprecated and is always false. https://go.microsoft.com/fwlink/?linkid=14202")]
public Uri(Uri baseUri, string? relativeUri, bool dontEscape);
[System.Obsolete("The constructor has been deprecated. Please new Uri(Uri, string). The dontEscape parameter is deprecated and is always false. http://go.microsoft.com/fwlink/?linkid=14202")]
public Uri(Uri baseUri, string relativeUri, bool dontEscape);
public Uri(Uri baseUri, string relativeUri, bool dontEscape);
[System.Obsolete("The constructor has been deprecated. Please new Uri(Uri, string). The dontEscape parameter is deprecated and is always false. https://go.microsoft.com/fwlink/?linkid=14202")]
public Uri(Uri baseUri, string relativeUri, bool dontEscape);
[<System.Obsolete("This constructor has been deprecated; the dontEscape parameter is always false. Use Uri(Uri, string) instead.")>]
new Uri : Uri * string * bool -> Uri
[<System.Obsolete("The constructor has been deprecated. Please new Uri(Uri, string). The dontEscape parameter is deprecated and is always false. https://go.microsoft.com/fwlink/?linkid=14202")>]
new Uri : Uri * string * bool -> Uri
[<System.Obsolete("The constructor has been deprecated. Please new Uri(Uri, string). The dontEscape parameter is deprecated and is always false. http://go.microsoft.com/fwlink/?linkid=14202")>]
new Uri : Uri * string * bool -> Uri
new Uri : Uri * string * bool -> Uri
Public Sub New (baseUri As Uri, relativeUri As String, dontEscape As Boolean)
Parameters
baseUri
Uri

The base URI.

relativeUri
String

The relative URI to add to the base URI.

dontEscape
Boolean

true if baseUri and relativeUri are completely escaped; otherwise, false.

Attributes
Exceptions

baseUri is not an absolute Uri instance.

The URI formed by combining baseUri and relativeUri is empty or contains only spaces.

-or-

The scheme specified in the URI formed by combining baseUri and relativeUri is not valid.

-or-

The URI formed by combining baseUri and relativeUri contains too many slashes.

-or-

The password, host name, file name, or user name specified in the URI formed by combining baseUri and relativeUri is not valid.

-or-

The host or authority name specified in the URI formed by combining baseUri and relativeUri is terminated by backslashes.

-or-

The port number specified in the URI formed by combining baseUri and relativeUri is not valid or cannot be parsed.

-or-

The length of the URI formed by combining baseUri and relativeUri exceeds 65519 characters (.NET 9 and earlier versions only).

-or-

The length of the scheme specified in the URI formed by combining baseUri and relativeUri exceeds 1023 characters.

-or-

There is an invalid character sequence in the URI formed by combining baseUri and relativeUri.

-or-

The MS-DOS path specified in baseUri doesn't start with c:\\.

Examples

The following example creates a new instance of the Uri class by combining the relative URIs http://www.contoso.com and Hello%20World.htm to form an absolute URI.

Uri baseUri = new Uri("http://www.contoso.com");
Uri myUri = new Uri(baseUri, "Hello%20World.htm",false);
let baseUri = Uri "http://www.contoso.com"
let myUri = Uri(baseUri, "Hello%20World.htm", false)
Dim baseUri As New Uri("http://www.contoso.com")
Dim myUri As New Uri(baseUri, "Hello%20World.htm", False)
Remarks

This constructor creates a Uri instance by combining baseUri and relativeUri. If the URI passed in relativeUri is an absolute URI (containing a scheme, host name, and optionally a port number), the Uri instance is created using only relativeUri.

The dontEscape parameter controls whether reserved characters are translated into escape sequences. This parameter should be set to true only if you are certain that all reserved characters in the URI have been escaped. Setting the value to true for a URI that has not been completely escaped can cause unexpected behavior. It is strongly recommended that you always set this parameter to false. If dontEscape is set to false, the constructor escapes any reserved characters by checking that all occurrences of percent (%) are followed by a valid escape sequence. If the character sequence following a percent is not valid, the percent is replaced by %25.

This constructor does not ensure that the Uri refers to an accessible resource.

Notes to Callers

Because of security concerns, your application should not call this constructor with URI strings from untrusted sources and with dontEscape set to true. Alternately, you can check a URI string for validity by calling the IsWellFormedOriginalString() method prior to calling this constructor.


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