CODEWITHSUNDEEP
c#arrayslist
Daniel Lip
Daniel Lip

Reputation: 11319

How do i add to a List<long> another array long?

Im doing this:

long[] HistogramValues = Form1.GetHistogram(bitmap);
Form1.Histograms.AddRange(HistogramValues);

But then Histograms contain also 256 values like HistogramValues. I want that in Histograms in index [0] there will be 256 values from HistogramValues then in [1] also 256 values then [2] and so on.

Histograms is a List

Upvotes: 0

Views: 132

Answers (3)

Ian Dallas
Ian Dallas

Reputation: 12741

Sounds to me like you want a 2-dimensional array or nested Lists:

long[,] longArray = new long[16, 256];
List<List<long>> longList = new List<List<Long>>();

For the array you will have 16 columns each with 256 values. For the List implementation you can add as many as you want...likely longList[0] = new List<long>(256) for your case but these lists are not bound in anyway.

Additional Resources:

MSDN Multidimensional Arrays

Upvotes: 0

tomfanning
tomfanning

Reputation: 9660

A list of array of longs - List<long[]>

class Form1
{
    public Form1()
    {
         this.Histograms = new List<long[]>();
    }

    public List<long[]> Histograms { get; private set; }
}

long[] histogramValues = Form1.GetHistogram(bitmap);
Form1.Histograms.Add(histogramValues);

Then you can access each histogram as such:

long[] fifthHistogram = Form1.Histograms[4];

Upvotes: 0

bernd_rausch
bernd_rausch

Reputation: 335

What you need is a list of arrays

List<long[]> Histograms = new List<long[]>();

And then add the arrays

long[] HistogramValues = Form1.GetHistogram(bitmap);
Form1.Histograms.Add(HistogramValues);

Upvotes: 5

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