How to clear all form fields from code?

Question

HTML has the type of input buttons to reset all the form fields to their original state in one step: <input type="reset" ... />.

Is there a similar easy way to reset all form fields of an aspx page form from code? Or is it necessary that reset all control one by one with help TextBox1.Text=string.Empty, TextBox2.Text=string.Emptyetc.?

Thanks in advance!

Update:

Context is a simple contact page / "Send us a message" with 8 asp: TextBoxes on the page (where the user enters a name, address, phone, email, message, etc.). Then he clicks the “Send” button, the encoded Onclick message processor sends an email to some administrator, and all the fields of the form filled in by the user must be emptied, and he receives a notification on the shortcut (“Message sent by blabla ...”)). I want the form fields to be cleared so that the user doesn’t click again to submit, and the same message is sent a second time.

Answer 1

fork , - , reset it.

foreach( var control in this.Controls )
{
    var textbox = control as TextBox;
    if (textbox != null)
        textbox.Text = string.Empty;

    var dropDownList = control as DropDownList;
    if (dropDownList != null)
        dropDownList.SelectedIndex = 0;
    ...
}

. , , , . :

private void ClearControl( Control control )
{
    var textbox = control as TextBox;
    if (textbox != null)
        textbox.Text = string.Empty;

    var dropDownList = control as DropDownList;
    if (dropDownList != null)
        dropDownList.SelectedIndex = 0;
    ...

    foreach( Control childControl in control.Controls )
    {
        ClearControl( childControl );
    }
}

, , :

ClearControls( this );

Answer 2

.

http://www.freshcodehub.com/Article/3/clear-all-fields-like-textbox-dropdownlist-checkbox-radiobutton-label-after-form-submission-in-aspnet-c

public void ClearControls(Control parent)
{
    foreach (Control c in parent.Controls)
    {
        if ((c.GetType() == typeof(TextBox)))  //Clear TextBox
        {
            ((TextBox)(c)).Text = "";
        }
        if ((c.GetType() == typeof(DropDownList)))  //Clear DropDownList
        {
            ((DropDownList)(c)).ClearSelection();
        }
        if ((c.GetType() == typeof(CheckBox)))  //Clear CheckBox
        {
            ((CheckBox)(c)).Checked = false;
        }
        if ((c.GetType() == typeof(CheckBoxList)))  //Clear CheckBoxList
        {
            ((CheckBoxList)(c)).ClearSelection();
        }
        if ((c.GetType() == typeof(RadioButton)))  //Clear RadioButton
        {
            ((RadioButton)(c)).Checked = false;
        }
        if ((c.GetType() == typeof(RadioButtonList)))  //Clear RadioButtonList
        {
            ((RadioButtonList)(c)).ClearSelection();
        }
        if ((c.GetType() == typeof(HiddenField)))  //Clear HiddenField
        {
            ((HiddenField)(c)).Value = "";
        }
        if ((c.GetType() == typeof(Label)))  //Clear Label
        {
            ((Label)(c)).Text = "";
        }
        if (c.HasControls())
        {
            ClearControls(c);
        }
    }
}

Answer 3

String.Empty , Response.Redirect(); . , , :

    Public void reset(Control control)
    {
      foreach (Control x in control.Controls)
      {
        if (x is TextBox)
        {
            (x as TextBox).Text = String.Empty;
        }
        if (x is DropDownList)
        {
            (x as DropDownList).SelectedIndex = 0;
        } 
        .
        .
        reset(x);
      }
    }

reset(this); , reset, . if , Control x.

Answer 4

form.Controls.Clear() , , .

, , , : Reset "Button1", reset();

Reset:

   protected void resetButton_Click(object sender, EventArgs e)
   {
      TextBox1.Text=""; //set equal to empty string to all fields
   }

,

    protected void resetButton_Click(object sender, EventArgs e)
    {
        Response.Redirect("~/Test2.aspx", true);
    } 

Answer 5

, , ViewState (EnableViewState=false) , .

, , , - .