Clear all forms controls from code-behind asp.net c#

/////////////

Use NameSpace

1. using System.Web.UI;

2. using System.Web.UI.HtmlControls;

public static void Clear_Controls_Comman(Panel ControlIDs)

    {

        foreach (Control item in ControlIDs.Controls)

        {

            if (item is TextBox)

            {

                TextBox t = item as TextBox;

                t.Text = "";

            }

            else if (item is CheckBox)

            {

                CheckBox t = item as CheckBox;

                t.Checked = false;

            }

            else if (item is DropDownList)

            {

                DropDownList t = item as DropDownList;

                t.ClearSelection();

                if (t.Items.Count > 0)

                {

                    t.SelectedIndex = 0;

                }

            }

            else if (item is CheckBoxList)

            {

                CheckBoxList t = item as CheckBoxList;

                t.ClearSelection();

            }

            else if (item is RadioButton)

            {

                RadioButton t = item as RadioButton;

                t.Checked = false;

            }

            else if (item is RadioButtonList)

            {

                RadioButtonList t = item as RadioButtonList;

                t.ClearSelection();

            }

            else if (item is HtmlInputText)

            {

                HtmlInputText t = item as HtmlInputText;

                t.Value = "";

            }

            else if (item is HtmlTextArea)

            {

                HtmlTextArea t = item as HtmlTextArea;

                t.InnerText = "";

            }

            else if (item is HtmlInputCheckBox)

            {

                HtmlInputCheckBox t = item as HtmlInputCheckBox;

                t.Checked = false;

            }

        }

    }