AlwaysVisibleControl控件，控件用于 将有该控件指定的面板或者空间，在页面指定的方式显示出来。
页面代码如下：
<%...@PageLanguage="C#"AutoEventWireup="true"CodeFile="AlwaysVisibleControlDemo.aspx.cs"
Inherits="AlwaysVisibleControlDemo"%>
<%...@RegisterAssembly="System.Web.Extensions,Version=1.0.61025.0,Culture=neutral,
PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI"TagPrefix="asp"%>
<%...@RegisterAssembly="AjaxControlToolkit"Namespace="AjaxControlToolkit"TagPrefix="cc1"%>
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml">
<headrunat="server">
<title>无标题页</title>
</head>
<body>
<formid="form1"runat="server">
<div>
<asp:ScriptManagerID="ScriptManager1"runat="server">
</asp:ScriptManager>
<asp:UpdatePanelID="update"runat="server">
<ContentTemplate>
<divstyle="width:230px;height:100px">
<asp:PanelID="displayPanel"runat="server"
Width="220px"BackColor="White"ForeColor="DarkBlue"
BorderWidth="2"BorderStyle="solid"BorderColor="DarkBlue"style="z-index:1;">
<divstyle="width:100%;height:100%;vertical-align:middle;text-align:center;"><p>可移动Panel:</p></div>
</asp:Panel>
<cc1:AlwaysVisibleControlExtenderID="avce"runat="server"
TargetControlID="displayPanel"
VerticalSide="Top"VerticalOffset="10"
HorizontalSide="Right"HorizontalOffset="10"
ScrollEffectDuration=".1"/>
</div>
<p>
选择需要移动到的Panel位置.
</p>
<p>
Position:<asp:DropDownListID="ddlPosition"runat="server"
AutoPostBack="true"OnSelectedIndexChanged="OnChange">
<asp:ListItemText="默认"Selected="true"Value="None"/>
<asp:ListItemText="左上"Value="TL"/>
<asp:ListItemText="上中"Value="TC"/>
<asp:ListItemText="右上"Value="TR"/>
<asp:ListItemText="左中"Value="ML"/>
<asp:ListItemText="中中"Value="MC"/>
<asp:ListItemText="右中"Value="MR"/>
<asp:ListItemText="左下"Value="BL"/>
<asp:ListItemText="中下"Value="BC"/>
<asp:ListItemText="右下"Value="BR"/>
</asp:DropDownList>
</p>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
程序代码如下：
usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Collections;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
usingAjaxControlToolkit;
publicpartialclassAlwaysVisibleControlDemo:System.Web.UI.Page
...{
protectedvoidPage_Load(objectsender,EventArgse)
...{
if(!IsPostBack)
avce.Enabled=false;
}
protectedvoidOnChange(objectsender,EventArgse)
...{
if(string.IsNullOrEmpty(ddlPosition.SelectedValue)||ddlPosition.SelectedValue.Length!=2)
...{
avce.Enabled=false;
return;
}
avce.Enabled=true;
switch(ddlPosition.SelectedValue[0])
...{
case'T':
avce.VerticalSide=VerticalSide.Top;
break;
case'M':
avce.VerticalSide=VerticalSide.Middle;
break;
case'B':
avce.VerticalSide=VerticalSide.Bottom;
break;
default:
avce.Enabled=false;
return;
}
switch(ddlPosition.SelectedValue[1])
...{
case'L':
avce.HorizontalSide=HorizontalSide.Left;
break;
case'C':
avce.HorizontalSide=HorizontalSide.Center;
break;
case'R':
avce.HorizontalSide=HorizontalSide.Right;
break;
default:
avce.Enabled=false;
return;
}
}
}
页面代码如下：
<%...@PageLanguage="C#"AutoEventWireup="true"CodeFile="AlwaysVisibleControlDemo.aspx.cs" Inherits="AlwaysVisibleControlDemo"%>
<%...@RegisterAssembly="System.Web.Extensions,Version=1.0.61025.0,Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI"TagPrefix="asp"%><%...@RegisterAssembly="AjaxControlToolkit"Namespace="AjaxControlToolkit"TagPrefix="cc1"%><!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml"><headrunat="server"><title>无标题页</title></head><body><formid="form1"runat="server"><div> <asp:ScriptManagerID="ScriptManager1"runat="server"></asp:ScriptManager><asp:UpdatePanelID="update"runat="server"><ContentTemplate><divstyle="width:230px;height:100px"><asp:PanelID="displayPanel"runat="server"Width="220px"BackColor="White"ForeColor="DarkBlue"BorderWidth="2"BorderStyle="solid"BorderColor="DarkBlue"style="z-index:1;"><divstyle="width:100%;height:100%;vertical-align:middle;text-align:center;"><p>可移动Panel:</p></div></asp:Panel><cc1:AlwaysVisibleControlExtenderID="avce"runat="server"TargetControlID="displayPanel"VerticalSide="Top"VerticalOffset="10"HorizontalSide="Right"HorizontalOffset="10"ScrollEffectDuration=".1"/></div><p>选择需要移动到的Panel位置.</p><p>Position:<asp:DropDownListID="ddlPosition"runat="server"AutoPostBack="true"OnSelectedIndexChanged="OnChange"><asp:ListItemText="默认"Selected="true"Value="None"/><asp:ListItemText="左上"Value="TL"/><asp:ListItemText="上中"Value="TC"/><asp:ListItemText="右上"Value="TR"/><asp:ListItemText="左中"Value="ML"/><asp:ListItemText="中中"Value="MC"/><asp:ListItemText="右中"Value="MR"/><asp:ListItemText="左下"Value="BL"/><asp:ListItemText="中下"Value="BC"/><asp:ListItemText="右下"Value="BR"/></asp:DropDownList></p></ContentTemplate></asp:UpdatePanel> </div></form></body></html>
程序代码如下：
usingSystem;usingSystem.Data;usingSystem.Configuration;usingSystem.Collections;usingSystem.Web;usingSystem.Web.Security;usingSystem.Web.UI;usingSystem.Web.UI.WebControls;usingSystem.Web.UI.WebControls.WebParts;usingSystem.Web.UI.HtmlControls;usingAjaxControlToolkit;publicpartialclassAlwaysVisibleControlDemo:System.Web.UI.Page...{protectedvoidPage_Load(objectsender,EventArgse)...{if(!IsPostBack)avce.Enabled=false;}protectedvoidOnChange(objectsender,EventArgse)...{if(string.IsNullOrEmpty(ddlPosition.SelectedValue)||ddlPosition.SelectedValue.Length!=2)...{avce.Enabled=false;return;}avce.Enabled=true;switch(ddlPosition.SelectedValue[0])...{case'T':avce.VerticalSide=VerticalSide.Top;break;case'M':avce.VerticalSide=VerticalSide.Middle;break;case'B':avce.VerticalSide=VerticalSide.Bottom;break;default:avce.Enabled=false;return;}switch(ddlPosition.SelectedValue[1])...{case'L':avce.HorizontalSide=HorizontalSide.Left;break;case'C':avce.HorizontalSide=HorizontalSide.Center;break;case'R':avce.HorizontalSide=HorizontalSide.Right;break;default:avce.Enabled=false;return;}}}
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