AjaxControlToolkit.HtmlEditorExtender.OnLoad C# (CSharp) Метод

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            // Register an empty OnSubmit statement so the ASP.NET WebForm_OnSubmit method will be automatically
            // created and our behavior will be able to wrap it to encode html tags prior to submission
            ScriptManager.RegisterOnSubmitStatement(this, typeof(HtmlEditorExtender), "HtmlEditorExtenderOnSubmit", "null;");

            // If this extender has default focus, use ClientState to let it know
            ClientState = (string.Compare(Page.Form.DefaultFocus, TargetControlID, StringComparison.OrdinalIgnoreCase) == 0) ? "Focused" : null;

            // decode values of textbox
            var txtBox = (TextBox)TargetControl;
            if(txtBox != null)
                txtBox.Text = Decode(txtBox.Text);

            ajaxFileUpload.Visible = HasImageButton();
        }