'C# text box when clicked displays drop down with previous values entered

Using visual studio and added a text box for searching and it is automatically adding a drop down displaying previous entered text double spaced. How to get rid of it? I’ve tried everything but the correct fix. Code was added in Site.Master Thanks in advance.

    <div class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" runat="server" href="~/" title="Home">Live</a>

                <!-- Search Text Box -->
                <div style="margin-right: 0px; padding-right:0px; float:left;">
                    <asp:TextBox runat="server" CssClass="ignore-css" ID="txtSearchBox" placeholder="Search" style="margin-top: 15px; background-color: #fff; margin-right: 0px; padding-right: 0px; height: 22px;"></asp:TextBox>
                </div>
                <!-- Search Button -->
                <div style="margin-left: 0px; padding-left:0px; float:left;">
                    <asp:ImageButton runat="server" ID="btnSearch" ImageUrl="~/images/searchIcon.png" CssClass="btnSearch" OnClick="imgSearchButton_Click" />
                </div>
            </div>          

            <div class="nav navbar-nav navbar-right dropdown-ql">
              <button class="dropbtn-ql">Quick Links & LCOM</button>
              <div class="dropdown-content-ql" id="ddlQuickLinks" runat="server"></div>
            </div>              
        </div>
    </div>
c++sharp


Solution 1:[1]

You can turn off autocomplete by adding autocomplete="off" attribute to your textbox.

Solution 2:[2]

Check this -> HTML autocomplete Attribute Html input autocomplete attribute. Just set off in order to get rid of this.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 SnowGroomer
Solution 2

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