To Clear the Form Controls in Single Click

public static void ClearForm(System.Windows.Forms.Control parent)

{

foreach (System.Windows.Forms.Control ctrControl in parent.Controls)

{

//Loop through all controls

if (object.ReferenceEquals(ctrControl.GetType(), typeof(System.Windows.Forms.TextBox)))

{

//Check to see if it's a textbox

((System.Windows.Forms.TextBox)ctrControl).Text = string.Empty;

//If it is then set the text to String.Empty (empty textbox)

}

else if (object.ReferenceEquals(ctrControl.GetType(), typeof(System.Windows.Forms.RichTextBox)))

{

//If its a RichTextBox clear the text

((System.Windows.Forms.RichTextBox)ctrControl).Text = string.Empty;

}

else if (object.ReferenceEquals(ctrControl.GetType(), typeof(System.Windows.Forms.ComboBox)))

{

//Next check if it's a dropdown list

((System.Windows.Forms.ComboBox)ctrControl).SelectedIndex = -1;

//If it is then set its SelectedIndex to 0

}

else if (object.ReferenceEquals(ctrControl.GetType(), typeof(System.Windows.Forms.CheckBox)))

{

//Next uncheck all checkboxes

((System.Windows.Forms.CheckBox)ctrControl).Checked = false;

}

else if (object.ReferenceEquals(ctrControl.GetType(), typeof(System.Windows.Forms.RadioButton)))

{

//Unselect all RadioButtons

((System.Windows.Forms.RadioButton)ctrControl).Checked = false;

}

if (ctrControl.Controls.Count > 0)

{

//Call itself to get all other controls in other containers

ClearForm(ctrControl);

}

}

}

//Example call

ClearForm(this);