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FileVersionInfo.IsPreRelease Property

Gets a value that specifies whether the file is a development version, rather than a commercially released product.

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

public bool IsPreRelease { get; }

Property Value

Type: System.Boolean
true if the file is prerelease; otherwise, false.

The following example calls GetVersionInfo to get the FileVersionInfo for the Notepad. Then it displays whether this version is a prerelease version in a text box. This code assumes textBox1 has been instantiated.

 private void GetIsPreRelease()
     // Get the file version for the notepad.
     FileVersionInfo myFileVersionInfo =
         FileVersionInfo.GetVersionInfo(Environment.SystemDirectory + "\\Notepad.exe");

     // Print whether the file is a prerelease version.
     textBox1.Text = "File is prerelease version " + myFileVersionInfo.IsPreRelease;

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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