having trouble clearing textboxes

Question

i want to clear all textboxes. wrote the public function as:

public void clean(Control parent)
{
    try
    {
        foreach (Control c in parent.Controls)
        {
            TextBox tb = c as TextBox; //if the control is a textbox
            if (tb != null)//Will be null if c is not a TextBox
            {
                tb.Text = String.Empty;//display nothing
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("{0} Exception caught.", ex);
    }
}

in the class of the page i want it to be called i declared:

PublicFunctions pubvar = new PublicFunctions();

and i call it as

pubvar.clean(Page);

but its not working... not even throwing an error... and my textboxes arent clearing... help?

When and where are you calling it? Also, your use of exception handling here is pointless. — James, Nov 21 '13 at 14:03
@James im calling it after closing of my connection to the database and after i do a gridview bind. all this happens when i click save to submit the info... also y is it pointless? please explain. — New2This, Nov 21 '13 at 14:10
It's pointless because 1. You are swallowing the exception and 2. if an exception get's thrown during that block of code then something is *fundamentally* wrong - you don't want to swallow it. Are you populating your UI anywhere else? Seems to me like you are re-populating it after you postback. — James, Nov 21 '13 at 14:28

score 0 · Answer 1 · answered Nov 21 '13 at 14:15

You should use recursive loop to check all the controls.

try this code

using System;
using System.Collections.Generic;
using System.Web.UI;
using System.Web.UI.WebControls;

public class PublicFunctions 
{
    public void Clean(Control parent)
    {
        var controls = GetAllControls(parent);

        foreach (Control c in controls)
        {
            TextBox tb = c as TextBox;
            if (tb != null)
            {
                tb.Text = String.Empty;
            }
        }
    }

    public IEnumerable<Control> GetAllControls(Control parent)
    {
        foreach (Control control in parent.Controls)
        {
            yield return control;

            foreach (Control innerControl in control.Controls)
            {
                yield return innerControl;
            }
        }
    }
}

This isn't going to solve anything, the code the OP has should work. — James, Nov 21 '13 at 14:25

having trouble clearing textboxes

1 Answers1