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Load Image File

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  • G Gareth H

    MasterSharp, Is this image static?, eg do you ever need to change it? If not, just use a picture box and load the image that way. Also, Whats the error? Regards, Gareth

    M Offline
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    MasterSharp
    wrote on last edited by
    #3

    It's not static, but I don't really intend to change it. Do I have to use a picturebox? Can I just load it anywhere (I have multiple images with the for loop later...)

    - I love D-flat!

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    • M MasterSharp

      Hello. I know I shouldn't come for such a simple problem, but I don't understand how to load an image. It was easy XNA, but regulaly is ...hard? I have an image file in the solution explorer under folders "Content" and "Sprites". Say the image is myImage. Whenever I declare a bitmap and then try to load in the public Form1 method, it always gives me an error. How do I load this image. (Does it matter the type of file?) Thanks in advance.

      - I love D-flat! if (!iWin) { iWin = true; }

      L Offline
      L Offline
      Luc Pattyn
      wrote on last edited by
      #4

      :confused::confused: You load an image file using Image.FromFile() or Image.FromStream(). The former locks the file until the image gets disposed of. You can also embed an image as a resource, and load it from there when needed. :)

      Luc Pattyn [Forum Guidelines] [My Articles]


      This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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      • L Luc Pattyn

        :confused::confused: You load an image file using Image.FromFile() or Image.FromStream(). The former locks the file until the image gets disposed of. You can also embed an image as a resource, and load it from there when needed. :)

        Luc Pattyn [Forum Guidelines] [My Articles]


        This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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        MasterSharp
        wrote on last edited by
        #5

        I still get the error.

        - I love D-flat!

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        • M MasterSharp

          I still get the error.

          - I love D-flat!

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          Luc Pattyn
          wrote on last edited by
          #6

          What error? Please try to provide good information if you want to get good replies. use a try-catch construct, catch the Exception, and look at Exception.ToString(). It will show a message, extra details, and a stack traceback. The first class.method with a linenumber is the source line you should look at. I hope you told Visual Editor to always display line numbers? (menu Tools/Options/ TextEditor...). :)

          Luc Pattyn [Forum Guidelines] [My Articles]


          This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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          • L Luc Pattyn

            What error? Please try to provide good information if you want to get good replies. use a try-catch construct, catch the Exception, and look at Exception.ToString(). It will show a message, extra details, and a stack traceback. The first class.method with a linenumber is the source line you should look at. I hope you told Visual Editor to always display line numbers? (menu Tools/Options/ TextEditor...). :)

            Luc Pattyn [Forum Guidelines] [My Articles]


            This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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            MasterSharp
            wrote on last edited by
            #7

            I know ehere it is. It's when I set the Bitmap previously declared to be a new Bitmap with a file extension. The error: ArgumentException was unhandled. Parameter is not valid.

            - I love D-flat!

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            • M MasterSharp

              I know ehere it is. It's when I set the Bitmap previously declared to be a new Bitmap with a file extension. The error: ArgumentException was unhandled. Parameter is not valid.

              - I love D-flat!

              L Offline
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              Luc Pattyn
              wrote on last edited by
              #8

              MasterSharp wrote:

              a new Bitmap with a file extension

              there is no such thing as a bitmap with a file extension, only files have an extension. I'm guessing you are doing something like new Bitmap(filespec+".JPG") and it throws the ArgumentException, so you must: 1. look at the exact value of the parameter you have there; is it a valid path? 2. if relative path is used, is the current directory at that point what you expect? 3. check that file exists 4. check that file contains a valid image (does it show a thumbnail in Windows Explorer). :)

              Luc Pattyn [Forum Guidelines] [My Articles]


              This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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              • L Luc Pattyn

                MasterSharp wrote:

                a new Bitmap with a file extension

                there is no such thing as a bitmap with a file extension, only files have an extension. I'm guessing you are doing something like new Bitmap(filespec+".JPG") and it throws the ArgumentException, so you must: 1. look at the exact value of the parameter you have there; is it a valid path? 2. if relative path is used, is the current directory at that point what you expect? 3. check that file exists 4. check that file contains a valid image (does it show a thumbnail in Windows Explorer). :)

                Luc Pattyn [Forum Guidelines] [My Articles]


                This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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                M Offline
                MasterSharp
                wrote on last edited by
                #9

                Do I need te file extension or not? (jpg, png ... ?)

                - I love D-flat!

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                • M MasterSharp

                  Do I need te file extension or not? (jpg, png ... ?)

                  - I love D-flat!

                  M Offline
                  M Offline
                  MasterSharp
                  wrote on last edited by
                  #10

                  This is it: Btimap myBitmap; public Form1 { myBitmap = new Bitmap("Content/Sprites/myImage.jpg"); } It doesn't work, when the file is under those folders in the explorer, WITH that name.

                  - I love D-flat!

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                  • M MasterSharp

                    This is it: Btimap myBitmap; public Form1 { myBitmap = new Bitmap("Content/Sprites/myImage.jpg"); } It doesn't work, when the file is under those folders in the explorer, WITH that name.

                    - I love D-flat!

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                    Ennis Ray Lynch Jr
                    wrote on last edited by
                    #11

                    That is not the correct path. When visual studio builds it places your executable in the bin directory. ../../Content/Sprites/myImage.jpg might work but the easiest thing to do is change your project settings to move the images to the bin directory on compile. However, I usually set the options to embed in the assemble and the use the GetManifestResourceStream method from the Assembly class to retrieve the streams at runtime.

                    Need a C# Consultant? I'm available.
                    Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway

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                    • M MasterSharp

                      Do I need te file extension or not? (jpg, png ... ?)

                      - I love D-flat!

                      L Offline
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                      Luc Pattyn
                      wrote on last edited by
                      #12

                      A file extension is not mandatory; AFAIK GDI+ recognizes the image formats it supports without needing the extension for that, so the only thing that matters is the filespec correctly points to an existing and valid file. :)

                      Luc Pattyn [Forum Guidelines] [My Articles]


                      This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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                      • M MasterSharp

                        This is it: Btimap myBitmap; public Form1 { myBitmap = new Bitmap("Content/Sprites/myImage.jpg"); } It doesn't work, when the file is under those folders in the explorer, WITH that name.

                        - I love D-flat!

                        L Offline
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                        Luc Pattyn
                        wrote on last edited by
                        #13

                        So the suspicious things are under my earlier points 1. are slashes valid folder separators on your system? 2. this is a relative path, is curdir what you think it is? :)

                        Luc Pattyn [Forum Guidelines] [My Articles]


                        This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


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