Calling a WCF function (with parameters by reference) from VBA code in Excel -

-

i have developed wcf service working. have vba code in excel wrote following guide - http://damianblog.com/2009/07/05/excel-wcf/

it working, have tested simple functions have parameters , return values - returns results correctly. need pass several parameters reference, set values in function, return. created test function:

// interface... [operationcontract] int read(ref int val1, ref int val2);  // implementation... public void read(ref int val1, ref int val2) {     val1 = 10;     val2 = 20; }

i call vba module this:

val1 = 0 val2 = 0  call service1.read(val1, val2) msgbox val1 msgbox val2

the values in end 20 , 0, instead of 10 , 20.

is not supported have more 1 'byref' parameter or doing wrong here?

p.s. interesting thing can't declare val1 integer or long because service1.read() call returns exception "type mismatch". seems work variant type.

edit: ok, worked around problem returning array of objects function. this:

// interface... [operationcontract] object[] read();  // implementation... public object[] read() {     return new object[4] { 10, 20, "hello world", datetime.now }; }

and in vba:

dim val() variant  val = service1.read() msgbox val(0) msgbox val(1) msgbox val(2) msgbox val(3)

worked charm

can add structure , return wcf method? mean, instead of 

int read(ref int val1, ref int val2);

do 

[datacontract] struct mydatastructure {  [datamember] int val0;  [datamember] int val1;  [datamember] int val2;  }  ...  mydatastructure read();

Popular posts from this blog

How to calculate SNR of signals in MATLAB? -

-
i've encountered simple, yet fundamental problem on calculating snr: there several signals : s1 = original , pure clean signal without noise. n1 = white gaussian noise going added s1. s2 = s1 + n1 (the noisy signal before performing noise-reduction algorithm) s3 = noise-reduced signal (after performing noise reduction algorithm) n2 = s3 - s1 (the amount of noise after performing noise-reduction algorithm) now want compare snr before , after performing noise-reduction algorithm. which signals should consider snr_before!? s1/n1 or s2/n1 ? which signals should consider snr_after!? s3/n1 or s3/n2 ? which commands or functions should use in matlab in order compute snr_before , snr_after? thanks billion putting time on helping me. what know calculating snr before : snrbeforenoise = mean( signal .^ 2 ) / mean( noise .^ 2 ); and snr after : residual_noise = signal - noise_reduced_signal; snr_after = mean( signal .^ 2 ) / mean( residual_noise .^ 2
Read more

c# - Attempting to upload to FTP: System.Net.WebException: System error -

-
i have api takes in xml , uploads files based on information in xml. uploads on schedule (also xml), , have tested surrounding , know works. i getting error 40% of time on first file attempt upload in each time cycle (time cycle = 45 minutes files, 30 minutes others). here code upload: try { loggerftp.log("uploading file: " + filename, false); // create request. ftpwebrequest request = (ftpwebrequest)webrequest.create(appsettingsftp.ftpurl + @"/" + filename); request.method = webrequestmethods.ftp.uploadfile; request.timeout = 6000000; //set 100 minutes //request.timeout = -1; //set infinite // add login credentials. request.credentials = new networkcredential(appsettingsftp.ftplogin, appsettingsftp.ftppassword); // grab file contents. streamreader sourcestream = new streamreader(appsettingsftp.uploadfiledirectory + filename); byte[] filecontents = encoding.utf8.getbytes(sourcestream.readtoend()); sourcest
Read more

ios - UISlider customization: how to properly add shadow to custom knob image -

-
Image
i need place custom knob image shadow uislider. far have image of 38x38, of there region defines shadow of knob. now while using image, when slide knob extreme ends actual knob not able cover end points, hence end points visible under transparent region of knob image this code using customize uislider uiimage *slidebtimg = [uiimage imagenamed:sliderknobimg]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatenormal]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatehighlighted]; how can implement custom knob shadow beneath it, covering end points?? look inside uislider.h , there methods let customize slider knob , track needed. (ios 2.0 , above) // lets subclass lay out track , thumb needed - (cgrect)minimumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)maximumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)trackrectforbounds:(cgrect)bounds; - (cgrect)thumbrectforbounds:(cgrect)bounds trackrect:(cgrect)rect value:
Read more