Uri.Host Property

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Gets the host component of this instance.

Namespace:  System
Assembly:  System (in System.dll)


Public ReadOnly Property Host As String
public string Host { get; }

Property Value

Type: System.String
A String that contains the host name. This is usually the DNS host name or IP address of the server.


Exception Condition

This property is valid only for an absolute Uri instance.


The Host property gets the host component of this Uri instance. This property value does not include the port number.

Silverlight-based applications are cross-platform, so they run in most modern Web browsers, including Apple Safari version 2.0 and later on Apple Mac OS X. However, full parsing for UNC style paths in a Uri is supported only on Windows. Any backslashes in a Uri for the UriSchemeFile representing a UNC path are converted to forward slashes on Apple Mac OS X.

An example that displays this issue is below:

Uri testUri = Uri(@"file://\\\\computer\\download\\file.ext");

On Windows, this UNC path is converted to the following Uri:


The AbsolutePath is /download/file.ext.

The Host property is equal to: computer.

The IsUnc property is true.

The LocalPath property is \\computer\download\file.ext.

On Apple Mac OS X, this UNC path is converted to the following Uri:


The AbsolutePath property is //computer/download/file.ext.

The Host property is an empty string.

The IsUnc property is false.

The LocalPath property is computer/download/file.ext.


The following example writes the host name (www.contoso.com) of the server to the console.

  Dim baseUri As New Uri("http://www.contoso.com:8080/")
  Dim myUri As New Uri(baseUri,"shownew.htm?date=today")

  outputBlock.Text &= "Uri.Host: "
  outputBlock.Text &= myUri.Host
  outputBlock.Text &= vbCrLf

   Uri baseUri = new Uri("http://www.contoso.com:8080/");
   Uri myUri = new Uri(baseUri, "shownew.htm?date=today");

   outputBlock.Text += "Uri.Host: ";
   outputBlock.Text += myUri.Host;
   outputBlock.Text += "\n";

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

See Also