0
我目前遇到的问题是,在更改视图后,我的按钮和其他控件未出现在页面上。该方案是建立这样的:更改视图后不会显示按钮
- 用户输入在文本框(tbxNumber)的数
- 用户点击该按钮(btnNumber),并且按钮填充下拉列表(ddlViews)用“意见”。观看次数取决于输入的数字。
- 用户从下拉列表中选择一个视图,然后单击另一个按钮。该按钮切换到与多视图(mtvNumber)中的视图相对应的视图。
我把程序切换到正确的视图,但是当它切换按钮,文本框和下拉列表全部消失。这是改变asp.net中视图背景的正确方法吗?
<asp:MultiView ID="mtvNumber" runat="server" ActiveViewIndex ="-1">
<asp:View ID="View1" runat="server">
<div style='position:absolute;z-index:0;left:0;top:0;width:100%;height:100%'>
<img src='Images/Patriots.jpg' style='width:100%;height:100%' alt='[]' />
</div>
<p>Hello from view1</p>
</asp:View>
我不确定这是否是将图像设置为背景的正确方法。如果有其他人有另一种方式来引入图片,请让我知道!
ASP.Net代码
<div>
<form id="formViews" runat="server">
<asp:TextBox ID="tbxNumber" runat="server"></asp:TextBox>
<asp:Button ID="btnNumber" runat="server" Text="Button" OnClick="btnNumber_Click" />
<asp:DropDownList ID="ddlViews" runat="server" OnSelectedIndexChanged="ddlViews_SelectedIndexChanged"></asp:DropDownList>
<asp:Button ID="BtnChangeView" runat="server" Text="Change View" OnClick="BtnChangeView_Click" />
<asp:MultiView ID="mtvNumber" runat="server" ActiveViewIndex ="-1">
<asp:View ID="View1" runat="server">
<div style='position:absolute;z-index:0;left:0;top:0;width:100%;height:100%'>
<img src='Images/Patriots.jpg' style='width:100%;height:100%' alt='[]' />
</div>
<p>Hello from view1</p>
</asp:View>
<asp:View ID="View2" runat="server">
<div style='position:absolute;z-index:0;left:0;top:0;width:100%;height:100%'>
<img src='Images/patriots2.jpg' style='width:100%;height:100%' alt='[]' />
</div>
</asp:View>
C#代码
protected void BtnChangeView_Click(object sender, EventArgs e)
{
// string used to check input.
string viewChecker = ddlViews.SelectedValue.ToString();
// if view1 is selected, switch to view1
if (viewChecker == "view1")
{
mtvNumber.ActiveViewIndex = 0;
Response.Write("made it to the first view");
BtnChangeView.Visible = true;
btnNumber.Visible = true;
// if view2 is selected, switch to view2
}
else if (viewChecker == "view2")
{
mtvNumber.ActiveViewIndex = 1;
Response.Write("made it to the second view");
}
// if view3 is selected, switch to view3
else if (viewChecker == "view3")
{
mtvNumber.ActiveViewIndex = 2;
Response.Write("made it to the third view");
}
我想我错过了一些东西,你可以请张贴一些更多的代码? –
刚发布! – JimmyDean
任何运气得到这个工作? –