Textbox field widths should be 100% in Bootstrap

Question

Below is my markup:

<div class="row">
                <div class="col-lg-2">
                    Address
                div>
                <div class="col-lg-10">
                    <asp:TextBox ID="txtAddress" runat="server" CssClass="form-control">asp:TextBox>
                div>
            div>

Below is the output:

 

 But, that is not what I want. I want the textbox field to cover 10 grids. Can someone help me?