vb.net 在asp.net中使面板可见或不可见
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make a panel visible or invisible in asp.net
提问by Vishal
I have a button on my page. I have a panel on my page. I also have a multiline textbox on my page.
我的页面上有一个按钮。我的页面上有一个面板。我的页面上还有一个多行文本框。
Now I want to make panel visible and invisible without disturbing the position of the textbox below. Just like notification panel on facebook.
现在我想让面板可见和不可见，而不会干扰下面文本框的位置。就像 facebook 上的通知面板一样。
Here is the code to make panel visible/invisible :
这是使面板可见/不可见的代码：
Protected Sub btnReauests_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles btnReauests.Click
If pnlShowRequests.Visible = True Then
pnlShowRequests.Visible = False
Else
pnlShowRequests.Visible = True
End If
End Sub
I have also tried setting the z-order style of the panel like this
我也试过像这样设置面板的 z-order 样式
<asp:Panel ID="pnlShowRequests" runat="server" style =" z-index : 1; position : relative; top: 0px; left: 255px; width: 206px; height: 200px;" Visible="False">
</asp:Panel>
回答by Joe Raio
You would have to wrap the panel in it's own div and set the height. This way when you make it invisible, it wont affect the position of the elements around it.
您必须将面板包裹在它自己的 div 中并设置高度。这样当你让它不可见时，它不会影响它周围元素的位置。
For example:
例如：
<div style="height: 100px;">
<asp:panel></asp:panel>
</div>
<asp:textbox runat="server"></asp:textbox>
