html - How to make drop down lists next to each other without any spacing or padding

Question

my code for the drop down items is below. i have padding:0. however. it is still causing a space in between my three drop down list items. i want no space and for all of them to be exactly 150px width. not sure why it still has a space. I guess i am thinking too much.

<asp:DropDownList ID="DropDownList1" runat="server" Width="150px" style="padding:0">
                <asp:ListItem></asp:ListItem>
                <asp:ListItem>Borough</asp:ListItem>
                <asp:ListItem>ZipCode</asp:ListItem>
                <asp:ListItem>Address No</asp:ListItem>
                <asp:ListItem>Street</asp:ListItem>
                <asp:ListItem>Freeform</asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="DropDownList2" runat="server" Width="150px"  style="padding:0">
                <asp:ListItem></asp:ListItem>
                <asp:ListItem>Borough</asp:ListItem>
                <asp:ListItem>ZipCode</asp:ListItem>
                <asp:ListItem>Address No</asp:ListItem>
                <asp:ListItem>Street</asp:ListItem>
                <asp:ListItem>Freeform</asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="DropDownList3" runat="server" Width="150px"  style="padding:0">
                <asp:ListItem></asp:ListItem>
                <asp:ListItem>Borough</asp:ListItem>
                <asp:ListItem>ZipCode</asp:ListItem>
                <asp:ListItem>Address No</asp:ListItem>
                <asp:ListItem>Street</asp:ListItem>
                <asp:ListItem>Freeform</asp:ListItem>
</asp:DropDownList>

Answer 1

DropDownLists 之间的空格来自标记中的空格（或换行符）。您可以尝试以下标记来删除它们：

<asp:DropDownList ID="DropDownList1" runat="server" Width="150px">
    <asp:ListItem></asp:ListItem>
    <asp:ListItem>Borough</asp:ListItem>
    <asp:ListItem>ZipCode</asp:ListItem>
    <asp:ListItem>Address No</asp:ListItem>
    <asp:ListItem>Street</asp:ListItem>
    <asp:ListItem>Freeform</asp:ListItem>
</asp:DropDownList><asp:DropDownList ID="DropDownList2" runat="server" Width="150px">
    <asp:ListItem></asp:ListItem>
    <asp:ListItem>Borough</asp:ListItem>
    <asp:ListItem>ZipCode</asp:ListItem>
    <asp:ListItem>Address No</asp:ListItem>
    <asp:ListItem>Street</asp:ListItem>
    <asp:ListItem>Freeform</asp:ListItem>
</asp:DropDownList><asp:DropDownList ID="DropDownList3" runat="server" Width="150px">
    <asp:ListItem></asp:ListItem>
    <asp:ListItem>Borough</asp:ListItem>
    <asp:ListItem>ZipCode</asp:ListItem>
    <asp:ListItem>Address No</asp:ListItem>
    <asp:ListItem>Street</asp:ListItem>
    <asp:ListItem>Freeform</asp:ListItem>
</asp:DropDownList>

---

如果 Visual Studio 倾向于自动重新格式化它，将换行符放回标记中，这是另一种方法，使用 table 元素：

<table cellpadding="0" cellspacing="0">
    <tr>
        <td>
            <asp:DropDownList ID="DropDownList1" runat="server" Width="150px">
                <asp:ListItem></asp:ListItem>
                <asp:ListItem>Borough</asp:ListItem>
                <asp:ListItem>ZipCode</asp:ListItem>
                <asp:ListItem>Address No</asp:ListItem>
                <asp:ListItem>Street</asp:ListItem>
                <asp:ListItem>Freeform</asp:ListItem>
            </asp:DropDownList>
        </td>
        <td>
            <asp:DropDownList ID="DropDownList2" runat="server" Width="150px">
                <asp:ListItem></asp:ListItem>
                <asp:ListItem>Borough</asp:ListItem>
                <asp:ListItem>ZipCode</asp:ListItem>
                <asp:ListItem>Address No</asp:ListItem>
                <asp:ListItem>Street</asp:ListItem>
                <asp:ListItem>Freeform</asp:ListItem>
            </asp:DropDownList>
        </td>
        <td>
            <asp:DropDownList ID="DropDownList3" runat="server" Width="150px">
                <asp:ListItem></asp:ListItem>
                <asp:ListItem>Borough</asp:ListItem>
                <asp:ListItem>ZipCode</asp:ListItem>
                <asp:ListItem>Address No</asp:ListItem>
                <asp:ListItem>Street</asp:ListItem>
                <asp:ListItem>Freeform</asp:ListItem>
            </asp:DropDownList>
        </td>
    </tr>
</table>