Hi,
I have called one function on 
<asp:RadioButtonList id="rbYesNo" runat="server" 
OnSelectedIndexChanged="OnSelected_YesNo" AutoPostBack="True"> Yes No 
 
 
 
 
 
 
public void OnSelected_YesNo(object sender,System.EventArgs e)

{

RadioButtonList rbClicklist;



Response.Write("OnRadioBtnClick");

int cntCheck=0;

for(int iIter=0;iIter<DataGrid1.Items.Count;iIter++)

{

DataGridItem objItem= DataGrid1.Items[iIter];

rbClicklist=((RadioButtonList)objItem.FindControl("rbYesNo"));

string rbClickValue=rbClicklist.SelectedIndex.ToString();

if(rbClickValue=="1" || rbClickValue=="0")

{

cntCheck=cntCheck+1;

}

}

//Button2.Enabled=false;

if(cntCheck==DataGrid1.Items.Count)

{

Button btnNext=new Button();

 

btnNext=(Button)DataGrid1.FindControl("button1");

btnNext.Enabled=true;





}
<FooterTemplate>
<asp:button id="button1" runat="server" Enabled="false"..........
 
I get a runtime error for this line 

btnNext.Enabled=true;
Object reference does not set to an instance of an object..
 
 
Required help on above Error---
 
 
Santosh

Charles Carroll <[EMAIL PROTECTED]> wrote:
You need to use OnItemDataBound()  and use DataGridID.findcontrol() on
that event.

It does not exist until the data is filled in to control.

Others will be able to elaborate. I wanted to point you in right direction.


On Sat, 22 Jan 2005 14:46:56 +0000 (GMT), santosh poojari
<[EMAIL PROTECTED]> wrote:
>  Hi All,
>  I have disabled the button in Datagrid and i want to make it enabled during
> run time such as 
>  public void Datagrid1_OnSelectedChanged( object sender ,System.  )
>  {
>  
>  ((Button)DataGrid1.FindControl("btnNext")).enabled=true;
>  }
>  I have tried this doing but it throws a runtime error
>  "Object Reference does not contain instance of Button.
>  
>  please comment,
>  San
>  
>  Yahoo! India Matrimony: Find your life partneronline.
>  
>  [Non-text portions of this message have been removed]
>  
>  
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