关于bootstrap 模态框 瞬间消失

不要重复引用bootstrap.min.js和jquery.min.js

<asp:Button ID="btnCurrentUser" type="button" runat="server" Text="[当前用户:管理员]" CssClass="btn btn-success" data-toggle="modal" data-target="#myModal" OnClientClick="return false"></asp:Button>
<!-- 模态框（Modal） -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                <h4 class="modal-title" id="myModalLabel">模态框（Modal）标题</h4>
            </div>
            <div class="modal-body">在这里添加一些文本</div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
                    <button type="button" class="btn btn-primary">提交更改</button>
                </div>
            </div><!-- /.modal-content -->
        </div><!-- /.modal -->
    </div>
</div>