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cant get bitmap to be used as embedded resource, code supplied

Posted on 2004-08-10
Medium Priority
Last Modified: 2013-12-03
hi, i cant get 2 bitmaps to be seen as embedded resources.
i copied the bitmaps out of syncfusions datagridbuttons demo.
i added them by  using the solution explorer > add existing item.
i also tried adding them by File > Add Existing item
i set the files' build action to embedded resource.
i also tried the build action on content.
i have spent a lot of time on this and its as if theres a connection i need to make before it can see
the files as embedded resources. i did compile it first before i ran it in debug mode.
i just get the error

An unhandled exception of type 'System.ArgumentException' occurred in system.drawing.dll
Additional information: 'null' is not a valid value for 'stream'.

in this section:
  Dim streamBitMap As System.IO.Stream = assemblyExecution.GetManifestResourceStream(BitMapName)
  Dim bitmapEmbedded As Bitmap = New Bitmap(streamBitMap)

here is all the code, you need 2 bitmaps, one called buttonface.bmp and buttonfacepressed.bmp
but its all available at

Public Class Form1
    Inherits System.Windows.Forms.Form
    Private WithEvents Icons As ImageList
#Region " Windows Form Designer generated code "

    Public Sub New()

        'This call is required by the Windows Form Designer.

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
            End If
        End If
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Name = "Form1"
        Me.Text = "Form1"

    End Sub

#End Region

    Private _buttonFace As Bitmap
    Private _buttonFacePressed As Bitmap

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
    End Sub
    Private Sub Attempt1()
        Dim strm As System.IO.Stream = Me.GetType().Assembly.GetManifestResourceStream("buttonface.bmp")
        _buttonFace = New Bitmap(strm)
        strm = Me.GetType().Assembly.GetManifestResourceStream("buttonfacepressed.bmp")
        _buttonFacePressed = New Bitmap(strm)
    End Sub
    Private Sub Attempt2()
        _buttonFace = GetEmbeddedBitmap("buttonface.bmp")
        _buttonFacePressed = GetEmbeddedBitmap("buttonfacepressed.bmp")
    End Sub
    Public Function GetEmbeddedBitmap(ByVal BitMapName As String) As Bitmap
        Dim assemblyExecution As System.Reflection.Assembly = Me.GetType.Assembly.GetEntryAssembly()
        Dim namespaceName As String = assemblyExecution.GetName().Name.ToString()
        BitMapName = namespaceName & "." & BitMapName
        Dim streamBitMap As System.IO.Stream = assemblyExecution.GetManifestResourceStream(BitMapName)
        Dim bitmapEmbedded As Bitmap = New Bitmap(streamBitMap)
        Return bitmapEmbedded
    End Function
End Class
Question by:jxharding
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LVL 27

Assisted Solution

planocz earned 1000 total points
ID: 11762079
Use with a image list
  Private Sub InitializeIcons()
        Dim executing_assembly As System.Reflection.Assembly = Me.GetType.Assembly.GetEntryAssembly()
        ' Get the namespace.
        Dim my_namespace As String = executing_assembly.GetName().Name.ToString()
        Me.ImageList1.Images.AddStrip(Image.FromStream(Reflection.Assembly.GetExecutingAssembly.GetManifestResourceStream(my_namespace +" MYbmp.bmp")))
    End Sub
LVL 25

Expert Comment

ID: 11763186
Hi jxharding,

Your attemps where correct, you just forgot to set the build action for your bitmaps to embedded resource.
Right click on your bitmap choose properties and set the build action to embedded resource
LVL 25

Accepted Solution

RonaldBiemans earned 1000 total points
ID: 11763221
I just tried it with this code and it works perfectly

    Private Sub Attempt1()
        Dim CurrentAssembly As Reflection.Assembly = _
        Dim BitMapStream As IO.Stream = _
        CurrentAssembly.GetManifestResourceStream( _
        Dim SmileyBitmap As Drawing.Bitmap = New Bitmap(BitMapStream)
        PictureBox1.Image = SmileyBitmap
    End Sub

if you try this without setting the build action to embedded resource you will get your error

An unhandled exception of type 'System.ArgumentException' occurred in system.drawing.dll
Additional information: 'null' is not a valid value for 'stream'.

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