getting the checkbox which was created dynamically

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Panel pan = (Panel) this.tabPage1.Controls.Find("a" + i.ToString(),true);
            CheckBox ck = (CheckBox)this.tabPage1.Controls.Find("check" + i.ToString(), true);

in above code that i am creating number of panels dynamically in C#.net(windows application)and in that each panel that am addng the checkboxs dynamically

here my requirement is that accessing the particular checked checkbox and writintg the value to the corresponding database

in above code that ai means (a1,a2,a3.........)panels created dynamically
checki means (check1,check2,.........)checkboxs created dynamically
what is the error in it
and how should i access it

more over i am getting the error as
1).cannot converttype system.windows.forms.controls[] to system.windows.forms.panel
2).cannot converttype system.windows.forms.controls[] to system.windows.forms.checkbox

Posted 13-Aug-10 2:34am

sivakumarmr10

Updated 13-Aug-10 2:42am

v2

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E.F. Nijboer 13-Aug-10 8:49am

If you set a breakpoint and go look at the names of the dynamically created controls, are the names as you expected (and when you break in the loop, does it equals "a" + i.ToString())? Are you sure their parent is the tabpage you are looking on? Step through it with the debugger and sure to find it quick and easy.

Samuel Cherinet 13-Aug-10 16:10pm

am confused here ... why are you looking for the panel in the first place ... I mean you are looking for the checkbox in the tabpage??? if you added the checkboxes in the panels then you should be looking for the checkbox inside the panel.

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Svetlin Panayotov · Accepted Answer · 2010-08-13T02:55:00

Try something like:

C#

Panel pan = (Panel)this.tabPage1.Controls.Find("a" + i.ToString(), true)[0];
CheckBox ck = (CheckBox)this.tabPage1.Controls.Find("check" + i.ToString(), true)[0];

Of course you should also check if the control you're looking for exists at all and is indeed a checkbox or panel:

C#

Control[] panels = this.tabPage1.Controls.Find("a" + i.ToString(), true);
Panel pan = null;
CheckBox ck = null;
if (panels.Length > 0 && panels[0] is Panel)
{
    pan = (Panel)panels[0];
}
else
{
    //The panel does not exist - do whatever you think is appropriate
}

Control[] checkBoxes = this.tabPage1.Controls.Find("check" + i.ToString(), true);
if (checkBoxes.Length > 0 && checkBoxes[0] is CheckBox)
{
    ck = (CheckBox)checkBoxes[0];
}
else
    //Checkbox doesn't exist