How to set contentEditable property in aspx?

I need to make a text开发者_StackOverflow中文版 box related to a calender control readonly. I set the contentEditable property to false. Still it can be edited. Here Readonly property failed to support my solution. Can any one please help me out?

' contentEditable="False" MaxLength="10" />

Thanks in advance

contentEditable="False" 
onKeyPress = "javascript: return false;" 
onPaste = "javascript: return false;"

You can try this one. Here the contentEditable property is browser dependent. So for browsers other than IE

onKeyPress = "javascript: return false;" 
onPaste = "javascript: return false;" 

will do the job