how to get data from Form returning

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Hi to all,

I have ManageItemForm having a button(itemLookup).

I want to click this button and call another form (ie. ItemLookup Form ) and that form having a DataGridView which contains Items information.

I want that when I click the button (ie. on ManageItemForm) it should call the ItemLookup Form and when I double click on an item in the datagridview it should return that item back to the ManageItem form.

How should I get that item from itemLookup form?

Actually I'm working on a project having ManageItem Form which contains a List of Items with the name of items.
The ManageItem form conatains a button with name LookItemButton.
At the click event of this button I have an object of another form (i.e ItemLookUpForm) and that form contains a datagrid view which shows all the item with other information.

I want that when I double Click on DataGridView the selected item should returnback to ManagItemForm, and the ItemLookUp Form should be closed or hidden.

Posted 26-May-11 23:17pm

Muhammad Tufail 1979

Updated 27-May-11 0:36am

Dalek Dave

v2

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Dalek Dave 27-May-11 6:36am

Edited for Grammar, Syntax, Spelling and Readability.

3 solutions

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BobJanova · Answer 1 · 2011-05-26T23:50:00

Typically I give the dialog form class a method and property something like this:

public BusinessObject BusinessObject {
 get { return businessObject; }
 set { businessObject = value; UpdateUI(value); }
}
private BusinessObject businessObject;

DialogResult Edit(BusinessObject obj){
 this.BusinessObject = obj;
 DialogResult r = this.ShowDialog();
 if(r == DialogResult.OK){
  WriteBackTo(BusinessObject);
 }
}

The calling form then does something like

if(DialogResult.OK == myEditorForm.Edit(myObject)){
 myObject = myEditorForm.BusinessObject;
 // Or: myEditorForm.BusinessObject.CopyTo(myObject);
}

The options there are for the case where you want to preserve the same object reference but set all the properties. Obviously, BusinessObject is a placeholder for whatever you want to edit, and UpdateUI is a method you need to write which sets the editor form up for this instance of one. (You can data bind, but you need to bind to a copy of the object or a change-history-preserving proxy for it, because you need to be able to cancel the changes.)

Edit: missed a step. Updated Edit. WriteBackTo is the opposite of UpdateUI, it takes the values entered on the form and puts it back in the object. If you choose to data bind the dialog to a copy or proxy then you don't need to do that. Typically I don't data bind simple dialogs because making the proxy is more effort than rewriting the property values manually.

Vijay Radia · Answer 2 · 2011-05-27T00:15:00

//Call this function from main page..

function openLookup(targetField,windowpage)
{

C#

var w = window.open(windowpage,'BCFSYS','width=572,height=550,scrollbars=1,resizable=no,top=100,left=200');
w.targetField = targetField; //create target field variable in popup window with the passed targetField as value

w.focus();
return false;

}

// in lookup page use following javascript function to return back selected value to the main page.

C#

function setValue(val)
{
if (opener && !opener.closed && opener.setTargetField)
{
window.opener.document.getElementById('ctl00_ContentPlaceHolder1_txtDepart').value val;
window.close();
window.opener.setTargetField(window.opener.document.getElementById('ctl00_ContentPlaceHolder1_txtDepart'), val);}
self.close();
}

In rowdatabound event of gridview in lookup page, set setValue function call on click of gridview row..

StM0n · Answer 3 · 2011-05-26T23:28:00

Solution 1

Are you aware of the principle of injection[^]?

Posted 26-May-11 23:28pm

StM0n

Updated 27-May-11 0:40am

v2

Comments

Dalek Dave 27-May-11 6:36am

Good Link

StM0n 27-May-11 6:40am

Oops... so much for copy & paste... ;)

Muhammad Tufail 1979 27-May-11 8:43am

no sorry i dont know about injection...

StM0n 27-May-11 10:17am

Maybe you should check this prinicple out... it could be usefull.

BobJanova 27-May-11 11:12am

I don't see how dependency injection is related to this question.

how to get data from Form returning

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