常用输入框组组合

<label asp-for="SpareMoney" class="col-md-2 control-label text-danger"></label>
                    <div class="col-md-4">
                        <div class="input-group">
                            <span class="input-group-addon"><span class="fa fa-yen"></span></span>
                            <input asp-for="SpareMoney" class="form-control"aria-label="Amount (to the nearest yen)" />
                         
                        </div>
                        <span asp-validation-for="SpareMoney" class="text-danger"></span>
                    </div>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#loadingModal" data-backdrop="static" data-keyboard=false>
  Launch demo modal
</button>

<!-- Modal -->
    <div class="modal fade" id="loadingModal" tabindex="-1" role="dialog" aria-labelledby="loadingModalLabel">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h4 class="modal-title" id="loadingModal">请稍后</h4>
                </div>
                <div class="modal-body">
                    <img class="icon" src="~/ajax-loader.gif">&nbsp; 正在处理，请耐心等候，勿关闭窗口...
                </div>
            </div>
        </div>
    </div>