FindControl Runtime Demo

FindControl — Runtime Support

BWFC provides a runtime FindControl(string id) method on every component, matching the Web Forms API. Your existing code-behind that uses FindControl compiles and runs without modification.

1. Direct Child Lookup

Code

TextBox box = (TextBox)panel.FindControl("DirectBox");
box.Text = "Found it!";

Result

Waiting for render...

2. Nested / Recursive Lookup

Code

// Search through nested panels
TextBox nested = (TextBox)outerPanel.FindControl("NestedBox");
nested.Text = "Found deep!";

Result

Waiting for render...

3. Chained Lookup

Code

// Chain through containers
var child = parent.FindControl("ChainChild");
Label lbl = (Label)child.FindControl("ChainLabel");
lbl.Text = "Chained!";

Result

Waiting for render...

4. Case-Insensitive Matching

Code

// ID="MixedCaseBox" found with lowercase
TextBox box = (TextBox)panel.FindControl("mixedcasebox");
box.Text = "Case doesn't matter!";

Result

Waiting for render...