aspx网页控件gridview中的boolean数据类型转换

                            <asp:TemplateField HeaderText="允许多任务">
                                <ItemStyle Width="80px" />
                                <ItemTemplate>
                                    <asp:CheckBox ID="chk允许多任务2" runat="server"  Checked='<%#  Eval("允许多任务").ToString()=="1"?true:false %>' />
                                </ItemTemplate>
                            </asp:TemplateField>