javascript - How do I populate a list box on a textbox change event -

simple one, need please. need populate list box based on values of textbox. sample.aspx code below

 <div>         <asp:textbox id="textbox1" autopostback="true"  runat="server"              ontextchanged="textbox1_textchanged"></asp:textbox>         <asp:listbox id="listbox1" runat="server"></asp:listbox>     </div> 

my sample .aspx.cs code below

 protected void page_load(object sender, eventargs e)     {          datalist("page");     }     protected void textbox1_textchanged(object sender, eventargs e)     {         datalist(textbox1.text);     }      private void datalist(string value)     {         datatable dt = new datatable();         dt.columns.add("city", typeof(string));         dt.columns.add("country", typeof(string));          (int = 0; < 10; i++)         {             datarow dr = dt.newrow();             dr["city"] = i.tostring() + value;             dr["country"] = i.tostring() + "a";             dt.rows.add(dr);         }           listbox1.datatextfield = "city";         listbox1.datavaluefield = "country";         listbox1.datasource = dt;         listbox1.databind();     } 

the textbox1_textchanged fired if control either goes out of focus or hit enter or tab button on textbox. means achieve on fly, eg. key in "b", , should able see listbox reflecting 0b,1b,... 9b. moment add ba, listbox should modify 0ba,1ba,... 9ba.

thanks , regards,

cmr

to call postback without reload page need use updatepanel, if want use asp.net solutions, think these tree post can you.

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i think do

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