Make CheckBoxList CheckBoxes in one same line using CSS in ASP.Net

 Solution :

.inline label {
    display: inline;
}

<div style="border: solid 1px blue; width: 300px;">
            <asp:CheckBoxList ID="CheckBoxList2" runat="server" CssClass="inline">
                <asp:ListItem Value="0" Text="line 0"></asp:ListItem>
                <asp:ListItem Value="1" Text="This is a kind of long text line which causes the text to be wrapped."></asp:ListItem>
            </asp:CheckBoxList>
        </div>