Display two fields side by side in a Bootstrap Form

I am trying to display a year range input on a form that has a 2 textboxes. One for the min and one for the max and are separated by a dash.

I want this all on the same line using bootstrap, but I cannot seem to get it to work correctly.

Here's my code:

<form id="Form1" class="form-horizontal" role="form" runat="server">
    <div class="row">
        <div class="form-group">
            <label for="tbxContactPhone" class="col-sm-2 control-label">Year</label>
            <div class="col-sm-4">
                <asp:TextBox ID="TextBox1" CssClass="form-control" runat="server" MaxLength="4" />
            </div>
            <label class="col-sm-2 control-label">-</label>
            <div class="col-sm-4">
                <asp:TextBox ID="TextBox2" CssClass="form-control" runat="server" MaxLength="4" />
            </div>
        </div>
    </div>
</form>

Here's what it looks like now:

How about using an input group to style it on the same line?

Here's the final HTML to use:

<div class="input-group">
    <input type="text" class="form-control" placeholder="Start"/>
    <span class="input-group-addon">-</span>
    <input type="text" class="form-control" placeholder="End"/>
</div>

Which will look like this:

Here's a Stack Snippet Demo:

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.css" rel="stylesheet"/>

<div class="input-group">
    <input type="text" class="form-control" placeholder="Start"/>
    <span class="input-group-addon">-</span>
    <input type="text" class="form-control" placeholder="End"/>
</div>

I'll leave it as an exercise to the reader to translate it into an asp:textbox element

@KyleMit's answer on Bootstrap 4 has changed a little

<div class="input-group">
    <input type="text" class="form-control">
    <div class="input-group-prepend">
        <span class="input-group-text">-</span>
    </div>
    <input type="text" class="form-control">
</div>

The problem is that .form-control class renders like a DIV element which according to the normal-flow-of-the-page renders on a new line.

One way of fixing issues like this is to use display:inline property. So, create a custom CSS class with display:inline and attach it to your component with a .form-control class. You have to have a width for your component as well.

There are other ways of handling this issue (like arranging your form-control components inside any of the .col classes), but the easiest way is to just make your .form-control an inline element (the way a span would render)

Bootstrap 3.3.7:

Use form-inline.

It only works on screen resolutions greater than 768px though. To test the snippet below make sure to click the "Expand snippet" link to get a wider viewing area.

        <link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css" rel="stylesheet"/>
        <form class="form-inline">
            <input type="text" class="form-control"/>-<input type="text" class="form-control"/>
        </form>

Reference: https://getbootstrap.com/docs/3.3/css/#forms-inline

For Bootstrap 4

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>

<div class="input-group">
    <input type="text" class="form-control" placeholder="Start"/>
    <div class="input-group-prepend">
        <span class="input-group-text" id="">-</span>
    </div>
    <input type="text" class="form-control" placeholder="End"/>
</div>

did you check boostrap website? search for "forms"

<div class="form-row">
<div class="col">
  <input type="text" class="form-control" placeholder="First name">
</div>
<div class="col">
  <input type="text" class="form-control" placeholder="Last name">
</div>

Just put two inputs inside a div with class form-group and set display flex on the div style

<form method="post">
<div class="form-group" style="display: flex;"><input type="text" class="form-control" name="nome" placeholder="Nome e sobrenome" style="margin-right: 4px;" /><input type="text" class="form-control" style="margin-left: 4px;" name="cpf" placeholder="CPF" /></div>
<div class="form-group" style="display: flex;"><input type="email" class="form-control" name="email" placeholder="Email" style="margin-right: 4px;" /><input type="tel" class="form-control" style="margin-left: 4px;" name="telephone" placeholder="Telefone" /></div>
<div class="form-group"><input type="password" class="form-control" name="password" placeholder="Password" /></div>
<div class="form-group"><input type="password" class="form-control" name="password-repeat" placeholder="Password (repeat)" /></div>
<div class="form-group">
    <div class="form-check"><label class="form-check-label"><input type="checkbox" class="form-check-input" />I agree to the license terms.</label></div>
</div>
<div class="form-group"><button class="btn btn-primary btn-block" type="submit">Sign Up</button></div><a class="already" href="#">You already have an account? Login here.</a></form>

@KyleMit answer is one way to solve this, however we may chose to avoid the undivided input fields acheived by input-group class. A better way to do this is by using form-group and row classes on a parent div and use input elements with grid-system classes provided by bootstrap.

<div class="form-group row">
    <input class="form-control col-md-6" type="text">
    <input class="form-control col-md-6" type="text">
</div>