The type or namespace name 'ImageEntitiesContainer' could not be found

Question

I'm trying to build a C#.NET application from the source code of a solution provided here.

I've already added a reference to AForge.Video.FFMPEG.dll, but I am still getting the following error:

Error 2 The type or namespace name 'ImageEntitiesContainer' could not be found (are you missing a using directive or an assembly reference?) C:\WorkSpace\Visual Studio 2013\Projects\CSharp\ImagesToVideo\Program.cs 56 40 ImagesToVideo

I searched for this error and found a few posts, but nothing that helps. I tried changing the target framework from my default ".NET Framework 4.5" to some other frameworks: ".NET Framework 2.0", ".NET Framework 3.0", ".NET Framework 4.0", but without any success. Does anyone have any idea why I am still getting this error?

Here is my full source code:

using AForge.Video.FFMPEG;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AForge.Video.FFMPEG
{
public class MovieMaker
{

    public void Start()
    {
        var startDate = DateTime.Parse("12 Mar 2012");
        var endDate = DateTime.Parse("13 Aug 2012");

        CreateMovie(startDate, endDate);
    }


    /*THIS CODE BLOCK IS COPIED*/

    public Bitmap ToBitmap(byte[] byteArrayIn)
    {
        var ms = new System.IO.MemoryStream(byteArrayIn);
        var returnImage = System.Drawing.Image.FromStream(ms);
        var bitmap = new System.Drawing.Bitmap(returnImage);

        return bitmap;
    }

    public Bitmap ReduceBitmap(Bitmap original, int reducedWidth, int reducedHeight)
    {
        var reduced = new Bitmap(reducedWidth, reducedHeight);
        using (var dc = Graphics.FromImage(reduced))
        {
            // you might want to change properties like
            dc.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            dc.DrawImage(original, new Rectangle(0, 0, reducedWidth, reducedHeight), new Rectangle(0, 0, original.Width, original.Height), GraphicsUnit.Pixel);
        }

        return reduced;
    }

    /*END OF COPIED CODE BLOCK*/


    private void CreateMovie(DateTime startDate, DateTime endDate)
    {
        int width = 320;
        int height = 240;
        var framRate = 200;

        using (var container = new ImageEntitiesContainer())
        {
            //a LINQ-query for getting the desired images
            var query = from d in container.ImageSet
                        where d.Date >= startDate && d.Date <= endDate
                        select d;

            // create instance of video writer
            using (var vFWriter = new VideoFileWriter())
            {
                // create new video file
                vFWriter.Open("nameOfMyVideoFile.avi", width, height, framRate, VideoCodec.Raw);

                var imageEntities = query.ToList();

                //loop throught all images in the collection
                foreach (var imageEntity in imageEntities)
                {
                    //what's the current image data?
                    var imageByteArray = imageEntity.Data;
                    var bmp = ToBitmap(imageByteArray);
                    var bmpReduced = ReduceBitmap(bmp, width, height);

                    vFWriter.WriteVideoFrame(bmpReduced);
                }
                vFWriter.Close();
            }
        }

    }
}
}

Answer 1

The ImageEntitiesContainer is not a class but a Data Source.You can figure it out in the LINQ-query code：

using (var container = new ImageEntitiesContainer())
{
    //a LINQ-query for getting the desired images
    var query = from d in container.ImageSet
                where d.Date >= startDate && d.Date <= endDate
                select d; 

ImageEntitiesContainer is the ADO.Net Entity Data Model which you have to create it by yourself.

ImageSet is a table in ImageEntitiesContainer.

The picture was captured from the link you provided：