c# - DigitalPersona SDK: Transfer EnrollmentForm image to another form -

trying do...

i working on project incorporates digitalpersona sdk captureform , enrollmentform. project includes main form, sake of question call form1. form includes picturebox, called picturebox1, , button, called button1. when click on button1, following code executed.

private void button1_click(object sender, eventargs e) {     enrollmentform enroll = new enrollmentform();     enroll.showdialog(); } 

in enrollmentform, have controls setup provided in digitalpersona sdk. captures fingerprint fine in picturebox, called picture. do, make when close enrollmentform, captured image in picturebox transferred picturebox on form1.

what have tried...

i have tried many examples have found here on stackoverflow , google. first create formclosing event , try pass image enrollmentform form1. did making picturebox1 on form1 public in form1.designer.cs , putting following code enrollmentform.

private void enrollmentform_formclosing(object sender, formclosingeventargs e) {     form1 frm = new form1();     frm.picturebox1.image = picture.image; } 

this compiled without problems, once image captured , form closed, image never transferred form1. doing further research, found article suggested following method when opening second form modally.

in form1, modified button1_click following.

private void button1_click(object sender, eventargs e) {     enrollmentform enroll = new enrollmentform();     enroll.showdialog();     picturebox1.image = enroll.selectedimage; } 

then in enrollmentform, following code added.

public image selectedimage {     { return picture.image; } } 

again, compiled. fingerprint captured, when enrollmentform closed, image never transferred picturebox1 on form1.

i not sure doing wrong here. eventually, form1 contain more 1 picturebox, , utilize enrollmentform populate each picturebox. appreciate assistance.

update future readers: thought i'd add ended working. turns out enrollmentform sdk gets picture captureform. ended having button open captureform instead, , tried image transfer main form , works properly.

step 1: create image type public variable enimage enrollmentform , in enrollment form closing event set enimage=yourpictureboxcontrolname.image ;

step 2: in main form create image type variable called mainimage , in button click event add code

enrollmentform enroll = new enrollmentform(); enroll.showdialog(); mainimage = enroll.enimage; picturebox1.image=mainimage; 

i tested code , it's working.