c# - Adding Attribute to base control of custom control in asp.net -

i have created custom control numeric textbox inherits textbox control. when renders , source of page show me 2 textboxes - 1 id of custom control , other 1 customcontrol's id , appended _txt_ctrl.

i want base control (with _txt_ctrl) should not render. in case if cant it, atleast , can add attribute base control. tried line of no use.

base.attributes.add("title", "this numeric textbox, accepts numbers."); 

![error screenshot - additional textbox][1]

  protected override void render(htmltextwriter writer)         {             writer.write("<table id=" + this.clientid + "_tbl" + " width='100%' cellspacing='0' cellpadding='0' border='0'><tr><td>");             base.render(writer);             writer.write("</td></tr></table>");         } 

and init

  protected override void oninit(eventargs e)         {             base.oninit(e);              if (this.page.clientscript.isclientscriptblockregistered("numerictextboxscript") == false)             {                 string _strscriptsrc = page.request.applicationpath + "/commonframework/presentation/javascripts/facesnumerictextbox.js";                  string strscriptblock = "<script src='"                     + _strscriptsrc                     + "'></script>";                  this.page.clientscript.registerclientscriptblock(this.gettype(), "numerictextboxscript", strscriptblock);             }              this.registerclientscriptfunction();              // adding textalign property control's stylesheet.                         if (this.textalign != null && this.textalign != string.empty)                 this.style.add("text-align", this.textalign);              this.attributes.add("onkeypress", "onkeypress_numericedit(event,'" + this.clientid + "');");             this.attributes.add("onblur", "formatinteger_numericedit('" + this.clientid + "');");             this.attributes.add("maxvalue", _maxvalue.tostring());             this.attributes.add("minvalue", _minvalue.tostring());             this.attributes.add("mindecimalplaces", convert.toint32(_mindecimalplaces).tostring());             this.attributes.add("datamode", convert.toint32(_datamode).tostring());             this.attributes.add("ismaxvalueset", ismaxvalueset.tostring());             this.attributes.add("isminvalueset", isminvalueset.tostring());             this.attributes.add("valuechange", _valuechange);         this.attributes.add("title", "this numeric textbox, accepts numbers."); base.attributes.add("title", "this numeric textbox, accepts numbers.");           }