Get runtime genrated checkbox value after clicking on a button

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C#

protected void btnSet_Click(object sender, EventArgs e) 
  { 
         CheckBox chkBx = new CheckBox(); 
         chkBx.ID = "chk1"; 
      appentDiv.Controls.Add(chkBx);
  } 

protected void btnGet_Click(object sender, EventArgs e) 
{ 
       CheckBox n = this.appentDiv.FindControl("chk1") as CheckBox;  
}

Could any please help to get checkbox value from here...?
Please reply...

Regards
Sujeet Singh

Posted 6-May-13 20:20pm

Sujee1

Updated 6-May-13 20:28pm

v3

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KM Perumal 7-May-13 2:24am

Improve ur question

Sujee1 7-May-13 2:29am

In my page i have 2 buttons GET and Set and when i click on Set, a checkbox is genrated at runtime, after check the checkbox when I click on Get, I want to get the checkbox's current value...I mean Is it checked or not??

vijay__p 7-May-13 2:36am

Are you getting checkbox object or not?

Sujee1 7-May-13 2:38am

I'm getting...but i am unable to get its current value(checked or Not checked)..???

Bikash Prakash Dash 7-May-13 3:16am

can you please specify what is appentDiv, which type of control is it.

Sujee1 7-May-13 3:51am

It is Panel.

2 solutions

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KM Perumal · Accepted Answer · 2013-05-06T21:12:00

Solution 1

Its working for me

C#

protected void btnGet_Click(object sender, EventArgs e) 
{ 
       CheckBox n = (CheckBox)this.appentDiv.FindControl("chk1") ;  
}

Posted 6-May-13 21:12pm

KM Perumal

Updated 6-May-13 21:13pm

v2

Comments

Sujee1 7-May-13 3:57am

But it is not working for me...Are u getting any value on object n ?

KM Perumal 7-May-13 3:59am

Ya i got true or false

Sujee1 7-May-13 4:05am

Could you please check my code, where is the problem and why am i not getting true or false?
Here is my aspx code.

<asp:Button ID="btn" runat="server" Text="SET" onclick="btnSet_Click" />
<div id="appentDiv" runat="server">
</div>
<asp:Button ID="Button1" Text="Get" runat="server" onclick="btnGet_Click" />

please..

KM Perumal 7-May-13 4:55am

Ur getting ispostback problem ..i tried load event with is postback igot values

Sujee1 7-May-13 7:01am

Here is my code please solve my problem....

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{

}
}

protected void btnSet_Click(object sender, EventArgs e)
{
CheckBox chkBx = new CheckBox();
chkBx.ID = "chk1";

appentDiv.Controls.Add(chkBx);

}

protected void btnGet_Click(object sender, EventArgs e)
{
CheckBox n = (CheckBox)this.appentDiv.FindControl("chkBx");

}

KM Perumal 7-May-13 7:08am

This is mIne checked ...
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
CheckBox chkBx = new CheckBox();
chkBx.ID = "chk1";

appentDiv.Controls.Add(chkBx);

}
}

protected void btnSet_Click(object sender, EventArgs e)
{

}

protected void btnGet_Click(object sender, EventArgs e)
{
CheckBox n = (CheckBox)this.appentDiv.FindControl("chkBx");

}

KM Perumal 7-May-13 7:08am

What Purpose Are you trying ??
If i ve any Idea i ll tell you..

Naz_Firdouse · Accepted Answer · 2013-05-06T23:33:00

Solution 2

You will be getting null at

C#

this.appentDiv.FindControl("chk1") as CheckBox

The reason is Dynamically added controls will not be available after postback....
So you need to handle this by using Session or Viewstate...
Please check these links...

Solve Dynamic Control Problem With PostBack[^]

http://chiragrdarji.wordpress.com/2009/05/20/maintain-viewstate-for-dynamic-controls-across-the-postback/[^]

http://www.codestructs.com/tag-blogger-com-1999-blog-2555797619867133640-post-2780447821170012635[^]

Posted 6-May-13 23:33pm

Naz_Firdouse

Comments

Sujee1 7-May-13 6:46am

ok but i'm unable to find..could you please explain here, because it will be a very small code.

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{

}
}

protected void btnSet_Click(object sender, EventArgs e)
{
CheckBox chkBx = new CheckBox();
chkBx.ID = "chk1";

appentDiv.Controls.Add(chkBx);

}

protected void btnGet_Click(object sender, EventArgs e)
{
CheckBox n = (CheckBox)this.appentDiv.FindControl("chkBx");

}

Thanks