How to check type and clear textboxs in c#

This article show you how to check type of textbox and clear all textboxes in form by using form controls. I have a form with six textboxses and I want to clear all textbox in my form when I click on clear button.

Sample form

 Let’s create a function to clear textbox.

Code :

public void clear(Form frm)

{

    //find all object in form

    foreach(Object txt in frm.Controls){

       //check if type of objects are TextBox

       if (txt is TextBox) {

          //declare a variable , text , as Textbox

          TextBox text = (Object)txt as TextBox;

          //clear all value in Textboxs

          text.Text = "";

        }

    }

}

  

Calling function clear in Clear Button 

private void btnClear_Click(object sender, EventArgs e)

{

    //calling clear function           

    clear(this);

    //this : is presented of the form

}

Done...hope you enjoy it...:) :)