Question

There is repeater in my program includin a hyper link.i cant a cess my hyper link control.

<asp:HyperLink ID="HyperLink15" runat="server" NavigateUrl="abc.aspx">

set enabled=false

so i use

HyperLink a = (HyperLink)Repeater1.FindControl("HyperLink15");

The hyper link is only enabled for user a and b… so i use the code:

if (a && b)
{
    HyperLink link = (HyperLink)Repeater1.FindControl("HyperLink15");
    link.Enabled=true;
    link.Navigateurl="efg.aspx"; 
}

But I get the following error:

System.NullReferenceException: Object reference not set to an instance
of an object.

Answer 1

HyperLink a = (HyperLink)Repeater1.Items[0].FindControl("HyperLink15");

Use above, and Items will contain index.

Or

for (int count = 0; count < Repeater1.Items.Count; count++)
        {
            HyperLink a = (HyperLink)Repeater1.Items[count].FindControl("HyperLink15");
        }