MissingManifestResourceException Class

Definition

public ref class MissingManifestResourceException : Exception

public ref class MissingManifestResourceException : SystemException

public class MissingManifestResourceException : Exception

public class MissingManifestResourceException : SystemException

[System.Serializable]
public class MissingManifestResourceException : SystemException

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public class MissingManifestResourceException : SystemException

type MissingManifestResourceException = class
    inherit Exception

type MissingManifestResourceException = class
    inherit SystemException

[<System.Serializable>]
type MissingManifestResourceException = class
    inherit SystemException

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type MissingManifestResourceException = class
    inherit SystemException

Public Class MissingManifestResourceException
Inherits Exception

Public Class MissingManifestResourceException
Inherits SystemException

Inheritance

Object

Exception

MissingManifestResourceException

Inheritance

Object

Exception

SystemException

MissingManifestResourceException

Attributes

SerializableAttribute ComVisibleAttribute

Remarks

A MissingManifestResourceException exception is thrown for different reasons in .NET versus UWP apps.

.NET apps

In .NET apps, MissingManifestResourceException is thrown when the attempt to retrieve a resource fails because the resource set for the neutral culture could not be loaded from a particular assembly. Although the exception is thrown when you try to retrieve a particular resource, it is caused by the failure to load the resource set rather than the failure to find the resource.

The main causes of the exception include the following:

• The resource set is not identified by its fully qualified name. For example, if the baseName parameter in the call to the ResourceManager.ResourceManager(String, Assembly) method specifies the root name of the resource set without a namespace, but the resource set is assigned a namespace when it is stored in its assembly, the call to the ResourceManager.GetString method throws this exception.

  If you've embedded the .resources file that contains the default culture's resources in your executable and your app is throwing a MissingManifestResourceException, you can use a reflection tool such as the IL Disassembler (Ildasm.exe) to determine the fully qualified name of the resource. In ILDasm, double click the executable's MANIFEST label to open the MANIFEST window. Resources appear as .mresource items and are listed after external assembly references and custom assembly-level attributes. You can also compile the following simple utility, which lists the fully qualified names of embedded resources in the assembly whose name is passed to it as a command-line parameter.

  using System;
  using System.IO;
  using System.Reflection;
  using System.Resources;
  
  public class Example
  {
     public static void Main()
     {
        if (Environment.GetCommandLineArgs().Length == 1) { 
           Console.WriteLine("No filename.");
           return;
        }
        
        string filename = Environment.GetCommandLineArgs()[1].Trim();
        // Check whether the file exists.
        if (!File.Exists(filename)) {
           Console.WriteLine("{0} does not exist.", filename);
           return;
        }   
        
        // Try to load the assembly.
        Assembly assem = Assembly.LoadFrom(filename);
        Console.WriteLine("File: {0}", filename);
           
        // Enumerate the resource files.
        string[] resNames = assem.GetManifestResourceNames();
        if (resNames.Length == 0)
           Console.WriteLine("   No resources found.");
  
        foreach (var resName in resNames)
           Console.WriteLine("   Resource: {0}", resName.Replace(".resources", ""));
  
        Console.WriteLine();
     }
  }
  

  Imports System.IO
  Imports System.Reflection
  Imports System.Resources
  
  Module Example
     Public Sub Main()
        If Environment.GetCommandLineArgs.Length = 1 Then 
           Console.WriteLine("No filename.")
           Exit Sub
        End If
        Dim filename As String = Environment.GetCommandLineArgs(1).Trim()
        ' Check whether the file exists.
        If Not File.Exists(filename) Then
           Console.WriteLine("{0} does not exist.", filename)
           Exit Sub
        End If   
        
        ' Try to load the assembly.
        Dim assem As Assembly = Assembly.LoadFrom(filename)
        Console.WriteLine("File: {0}", filename)
           
        ' Enumerate the resource files.
        Dim resNames() As String = assem.GetManifestResourceNames()
        If resNames.Length = 0 Then
           Console.WriteLine("   No resources found.")
        End If
        For Each resName In resNames
           Console.WriteLine("   Resource: {0}", resName.Replace(".resources", ""))
        Next
        Console.WriteLine()
     End Sub
  End Module
  

• You identify the resource set by its resource file name (along with its optional namespace) and its file extension rather than by its namespace and root file name alone. For example, this exception is thrown if the neutral culture's resource set is named GlobalResources and you supply a value of GlobalResources.resources (instead of GlobalResources) to the baseName parameter of the ResourceManager.ResourceManager(String, Assembly) constructor.

• The culture-specific resource set that is identified in a method call cannot be found, and the fallback resource set cannot be loaded. For example, if you create satellite assemblies for the English (United States) and Russia (Russian) cultures but you fail to provide a resource set for the neutral culture, this exception is thrown if your app's current culture is English (United Kingdom).

MissingManifestResourceException uses the HRESULT COR_E_MISSINGMANIFESTRESOURCE, which has the value 0x80131532.

MissingManifestResourceException uses the default Equals implementation, which supports reference equality.

For a list of initial property values for an instance of MissingManifestResourceException, see the MissingManifestResourceException constructors.

See also

• Exception
• ResourceManager
• Handling and throwing exceptions in .NET
• Packaging and Deploying Resources