C# - Keep in memory variables between calling 2 different matlab routines

What you are looking for is "setmcruserdata" and "getmcruserdata". Im assuming you are using the Builder NE. If so, also make sure that "matlabroutine1" and "matlabroutine2" are both methods in the same deployed C# class. These methods will share a common workspace in the MCR that will enable them to share data in the way you want.

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alorenzom 2011-7-27

Dear

I tried the following project:

---------------------------------------------

I builded this

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// Class1.cs

namespace Interfaccia

{

public interface Class1

{

void dammiA(out int Num,string varNm);

void Aggiungi(string varNm);

}

---------------------------------------------

then I builded this

---------------------------------------------

% Aggiungi.m

function Aggiungi(varNm)

value = 10;

setmcruserdata(varNm, value);

end

% dammiA.m

function b = dammiA(varNm)

b = getmcruserdata(varNm);

end

---------------------------------------------

then I builded this

---------------------------------------------

namespace Solutore

{

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

}

private void button1_Click(object sender, RoutedEventArgs e)

{

Class1 Calcolo = new Calcolo.Class1Class1();

int b;

string varNm ;

varNm = "varNm";

Calcolo.Aggiungi(varNm);

Calcolo.dammiA(out b, varNm);

}

---------------------------------------------

and after executing button1_Click I got at "Calcolo.dammiA(out b, varNm);"

ArgumentException non è stata gestita

Cannot convert MWArray to requested type

owr 2011-7-27

You have the correct idea with the .m functions you wrote. I think the issue is in how you are calling it in C#:

Calcolo.dammiA(out b, varNm);

You declared "b" to be an int, all outputs from deployed MATLAB functions need to be some sort of "MWArray". It looks like you are trying to use an interface wrapper with "Class1". I would leave this out until you are comfortable working with MWArray's. I would expect that you will have to do something more like this:

MWArray[] mlout = Calcolo.dammiA(1, varNm); // "1" means you are only expecting one output.

int b = (int)(MWNumericArray)mlout[0] // Since you know the first(only) output is an integer

The documentation for Builder NE has many examples of how to work with MWArrays.

Good luck!

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