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I have multiple double values that need to be converted into a float array or int array, what should I do?

E.g.

double[] values= new double[]{123.456,234.123};
float[] floatValues=xxxx(values);
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  • var floatValues = values.Cast<float>() ? What are the results here. You can just say i want to smash a big object into a little object and not care whats missing Commented Nov 2, 2021 at 3:39
  • Does this answer your question? C# Cast Entire Array? or convert Decimal array to Double array Commented Nov 2, 2021 at 4:05

3 Answers 3

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3

You'll have to do it element-wise. There are multiple ways to achieve that.

  1. You could foreach over the source array like

     floatvalues = new float[values.Length];
 for(var i = 0;i < values.Length;++i)
     floatValues[i] = (float)values[i];

  2. You could use LINQ for simplifying the loop

     floatValues = values.Select(d => (float)d).ToArray();

  3. You can use Cast<T>()

     floatValues = values.Cast<float>().ToArray();
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Comments

3

Alternet way is to use Array.ConvertAll(),

Converts an array of one type to an array of another type.

float[] floatValues = Array.ConvertAll(values, float.Parse);
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1 Comment

The converter should be Convert.ToSingle instead of float.Parse.
1

You can easily do this with Linq:

using Sytem.Linq;

double[] values= new double[]{123.456,234.123};
float[] floatValues= values.Cast<float>().ToArray();
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1 Comment

Unable to cast object of type 'System.Double' to type 'System.Single'.

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