asp.net - How do I put hint in a asp:textbox -

how put hint/placeholder inside asp:textbox? when hint mean text disappears when user clicks on it. there way achieve same using html / css?

the placeholder attribute

you're looking placeholder attribute. use other attribute inside asp.net control:

<asp:textbox id="txtwithhint" placeholder="hint" runat="server"/> 

don't bother ide (i.e. visual studio) maybe not knowing attribute. attributes not registered asp.net passed through , rendered is. above code (basically) renders to:

<input type="text" placeholder="hint"/> 

using placeholder in resources

a fine way of applying hint control using resources. way may have localized hints. let's have index.aspx file, app_localresources/index.aspx.resx file contains

<data name="withhint.placeholder">     <value>hint</value> </data> 

and control looks like

<asp:textbox id="txtwithhint" meta:resourcekey="withhint" runat="server"/> 

the rendered result same 1 in chapter above.

add attribute in code behind

like other attribute can add placeholder attributecollection:

txtwithhint.attributes.add("placeholder", "hint");