private static Control FindControl(Control seed, string id, bool traverse, Control branch)
{
if (seed == null || string.IsNullOrEmpty(id))
{
return(null);
}
Control found = null;
try
{
found = seed.FindControl(id);
if (found != null)
{
return(found);
}
}
catch (HttpException)
{
/// TODO: Notes regarding the FindControl Method.
// We need to call the native .FindControl because .EnsureChildControls()
// is method and can only be called internally by a Control.
// If protected .FindControl actually finds the control, we just return the found control.
// There is a bug in Visual Studio Design-Mode which causes protected/native
// .FindControl to think it's found two controls with the same ID, although only
// one exists. The conflict appears to be coming from a cached version of the assembly.
// Might be related to the following Microsoft KB834608 article, see
// http://support.microsoft.com/default.aspx/kb/834608
// start checking .ID property
}
Control root = (seed is INamingContainer) ? seed : seed.NamingContainer;
string exclude = (branch != null) ? branch.ID ?? "" : "";
foreach (Control control in root.Controls)
{
if (!exclude.Equals(control.ID) && ControlUtils.HasControls(control))
{
found = ControlUtils.FindChildControl(control, id);
}
if (found != null)
{
break;
}
}
if (traverse && found == null)
{
found = ControlUtils.FindControl(root.NamingContainer, id, traverse, root);
}
return(found);
}
public static T FindControl <T>(Control seed, string id, bool traverse, Control branch) where T : Control
{
Control c = ControlUtils.FindControl(seed, id, traverse, branch);
if (c != null && !ReflectionUtils.IsTypeOf(c, typeof(T)))
{
throw new InvalidCastException(string.Format("The Control ID ('{0}') was found, but it was not a type of {1}. The found Control was a type of {2}.", id, typeof(T).ToString(), c.GetType().ToString()));
}
return(c as T);
}
public static T FindControl <T>(Control seed, string id) where T : Control
{
return(ControlUtils.FindControl <T>(seed, id, true, null));
}
public static Control FindControl(Control seed, string id, bool traverse)
{
return(ControlUtils.FindControl(seed, id, traverse, null));
}
public static Control FindControl(Control seed, string id)
{
return(ControlUtils.FindControl(seed, id, true, null));
}
public static T FindControl <T>(Control seed, bool shallow) where T : Control
{
return(ControlUtils.FindControl(seed, typeof(T), shallow) as T);
}
public static T FindControl <T>(Control seed) where T : Control
{
return(ControlUtils.FindControl(seed, typeof(T)) as T);
}
