后端这样打连图片也显示不出来,求解
if (DropDownList1.Text == "bilibili")
Response.Redirect("https://www.bilibili.com/%22);
ImageButton1.ImageUrl = "img/bilibili.jpg";
if (DropDownList1.Text == "爱奇艺")
Response.Redirect("https://www.iqiyi.com/%22);
ImageButton1.ImageUrl = "img/aqy.jpg";
if (DropDownList1.Text == "腾讯视频")
Response.Redirect("https://v.qq.com/%22);
ImageButton1.ImageUrl = "img/tx.jpg";
if (DropDownList1.Text == "优酷")
Response.Redirect("https://www.youku.com/%22);
ImageButton1.ImageUrl = "img/yk.jpg";
这是前端 如果在这个地方设置imageurl的话可以显示图片,但是我想要通过不同的选项显示不同的图片
<asp:DropDownList ID="DropDownList1" runat="server" Height="30px" Width="100px">
asp:ListItembilibili
asp:ListItem腾讯视频
asp:ListItem爱奇艺
asp:ListItem优酷