using System;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Collections;


namespace CustomWebControl
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:ServerControl1 runat=server></{0}:ServerControl1>")]
    public class CustomTextBox : WebControl
    {
        private HtmlGenericControl SPAN;
        protected TextBox _txtBox;


        public string GetText
        {
            get
            {
                return _txtBox.Text;
            }
        }
        protected override object SaveViewState()
        {
            object[] basestate = new object[2];
            basestate[0] = base.SaveViewState();
            basestate[1] = _txtBox.Text;
            return basestate;
        }

        protected override void LoadViewState(object savedState)
        {
            if (savedState != null)
            {
                object[] state = (object[])savedState;
                base.LoadViewState(state[0]);
                if (state.Length > 1)
                {
                    if (state[1] != null)
                    {
                        _txtBox.Text = state[1].ToString();
                    }
                }
            }
        }

        public CustomTextBox()
        {
            SPAN = new HtmlGenericControl("span");
            _txtBox = new TextBox();
            _txtBox.EnableViewState = true;
        }

        protected override void RenderContents(HtmlTextWriter output)
        {

            _txtBox.ID = this.UniqueID + "_TXT";
            SPAN.Controls.Add(_txtBox);

            SPAN.RenderControl(output);
        }

        public bool LoadPostData(string postDataKey, NameValueCollection postCollection)
        {
            this._txtBox.Text = postCollection[postDataKey + "_TXT"];

            return true;
        }
    }
}