nedash says:

hi

I put textbox and checkbox in page like below:

1 2	<asp:TextBox ID="Txtmatn" runat="server" TextMode="MultiLine" CssClass="txtPH1T"></asp:TextBox> <label runat="server" class="chsms">    <input type="checkbox" id="Checkbox1" runat="server" class="chsms"/></label>

I want when users checked checkbox Txtmatn Enabled="true" and when they don't checked chekbox (unchecked checkbox) Txtmatn Enabled="false"

Best regards

neda

Refer the below Link for your reference and implement it by your own logic as per your code.

Enable Disable TextBox on CheckBox click (checked unchecked) using jQuery