Coping array from matlab to C#/.NET array

5 次查看(过去 30 天)
I have a dll from C# that i'm interfacing with. It has a structure that contains an array that I need to put data into.
This sets up the two arrays, in my actual problem the "destination" variable is in a structure but it shouldn't matter in this example.
MatArray = [1:10];
MatArray = int32(MatArray);
destination = NET.createArray('System.Int32', 10);
This can be copied item by item but for any decent size array this takes a long time.
% slow
for j = 1:numel(MatArray)
destination(j) = MatArray(j);
end
A faster way but a bit ulgy is to make a temp jaggered array then copy the data using a System.Array.Copy. This will also use up unnecessary memory, which may become an issue for very large arrays.
% fast but ulgy
temp = NET.createArray('System.Int32[]', 10);
temp(1) = MatArray;
System.Array.Copy(temp(1),destination,10);
Is there a better way to copy data from a matlab array into a c# array?

回答(1 个)

Animesh
Animesh 2023-8-31
I understand that you want to copy a matlab array to a C# array using MATLAB or C#.
You can try to use the ToArray method provided by the MATLAB int32 array to convert it to a regular C# array, and then assign it directly to the C# array.
Here is an example of how you can achieve this using C#:
// Assuming you have a C# array called "destination" and a MATLAB int32 array called "MatArray"
// Convert the MATLAB array to a C# array using the ToArray method
int[] temp = MatArray.ToArray();
// Copy the data from the temp array to the destination array
Array.Copy(temp, destination, temp.Length);
By using the ToArray method, you can directly convert the MATLAB array to a C# array without the need for intermediate steps or temporary arrays.
To read more about ToArray, please refer to the following documentation :- https://www.mathworks.com/help/dotnetbuilder/MWArrayAPI/html/M_MathWorks_MATLAB_NET_Arrays_MWArray_ToArray.htm

类别

Help CenterFile Exchange 中查找有关 .NET Client Programming 的更多信息

产品


版本

R2023a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by