javascript - Can I limit number of new lines in multiline asp:TextBox -


can limit 3 new lines in multiline asp:textbox using javascript or c#

only setting rows property 3 can achieve this:

<asp:textbox id="txtbox1" runat="server" rows="3" textmode="multiline"></asp:textbox>

use javascript:

function validate(e, max,maxchar) { var text = e.value.replace(/\s+$/g,""); var split = text.split("\n"); if (split.length <= max && text.length <=maxchar) {   return true; } else if (split.length >= max || e.value.length >=maxchar) {  return false; } }  <asp:textbox id="txtbox1" runat="server" textmode="multiline" rows="3" onkeypress="return validate(this,max_number,maxchar_number)"/>

change value of max_number , maxchar_number based on requirement.


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