Loading

How to check box value dynamically using findcontrol c# asp.

How to check box value dynamically using findcontrol c# asp.

Venkat Govind

Venkat Govind

9y5.9k.NET

Hi All,good Morning,

below is my html code

.

Below code i am trting to get checkbox checked status dynamically but i am getting object refernce not in set Pls provide related code

for (int i = 0; i <= 4; i++)

{

CheckBox chk = (CheckBox)this.FindControl("CheckBox"+i);

if (chk.Checked)

{

}

else

{

}

}

Thanks

VeKaT G

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Midhun Tp9y ago
Accepted answer
Hi,

Try below code -

for (int i = 1; i <= 5; i++)
{
CheckBox chk = (CheckBox)this.Master.FindControl("ContentPlaceHolder1").FindControl("CheckBox" + i);
if (chk.Checked)
{
}
else
{
}
}

You have to first find master page content placeholder and then the checkbox
Venkat Govind9y ago
Hi Midun,

Its working without refering master page thanks for refernce code,if i am creating page with reference master master page the exception .Thanks Reply
if you have any suggestion Pls post

Thank You
Venkat
Midhun Tp9y ago
Hi,

As per my knowledge that was the only issue for the above given code. Checked myself. Attached the sample code. Please check it.
Venkat Govind9y ago
HI Midhun ,

i changed but still i am getting error
Object reference not set to an instance of an object.
If you have any other option to get ?
Midhun Tp9y ago
Hi,

Your checkbox id is starting from 1, but your loop is starting from i=0!

Change your loop to start from i=1.

for (int i = 1; i <= 5; i++)