高手帮帮忙，如何用户控件添加事件？

2009-12-18 04:52:21 191 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

JPA - @MappedSuperclass - 基类注解目录前言代码示例前言 @MappedSuperclass注解一般作为基类的注解，表眀该类是映射的超类，继承于它的子类实体在映射时会自动添加到子类实体的对应数据库表中，用于共同的属性代码复用和模型分离。代码示例 BaseEntity.java import lombok.Getter; import lombok.Setter; import javax.persistence.MappedSuperclass; import java.util.Date; @Getter @Setter @Ma 阅读详情

我用了一个类似于DropDownList的用户控件，不同的是他有筛选功能，现在想要实现类似DriopDownList控件中的SelectedIndexChanged事件。请问下，在这个控件中应该如何实现这个事件。

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ly006404

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切换为时间正序

xingdongfang 2009-12-20

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这个完全可以。

你public SelectIndexchanged mCallback;

然后在你的ddl事SelectIndexchanged事件里面触发mCallback.

ly006404 2009-12-18

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11楼的高手，就这样就行吗？这样写在引用该控件的页面可以找到这个事件吗？我想要的结果是和DropDownList控件中SelectIndexchanged事件一样的效果。不知道行不行？

ly006404 2009-12-18

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对，就是在ascx.cs中定义一个event 。

xingdongfang 2009-12-18

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楼主是不是说的服务端事件

需要在ascx.cs中定义一个event

public event EventHandler mCallback;

protected void FireEvent()
{
if (this.mCallback != null)
{
this.mCallback(this, EventArgs.Empty);
}
}
protected void Page_Load(object sender, EventArgs e)
{
//fire event
this.FireEvent();
}

在引用它的页变的oninit事件中定义：

protected override void OnInit(EventArgs e)
{
base.OnInit(e);
this.WebUserControl11.mCallback += new EventHandler(WebUserControl11_mCallback);
}

void WebUserControl11_mCallback(object sender, EventArgs e)
{
throw new NotImplementedException();
}

ly006404 2009-12-18

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*.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="SelectClientSingle.ascx.cs" Inherits="UserControl_SelectClientSingle" %>

<script type="text/javascript" >
function <% =this.ClientID %>OnWorkerSingleselect()
{
document.getElementById("<% =txtDictionarySingleName.ClientID %>").readonly = true ;
selectIndex = document.getElementById("<% =selDictionarySingle.ClientID %>").selectedIndex ;
document.getElementById("<% =txtDictionarySingleName.ClientID %>").innerText = document.getElementById("<% =selDictionarySingle.ClientID %>").options[selectIndex].text ;
var strName = document.getElementById("<% =selDictionarySingle.ClientID %>").options[selectIndex].text ;
document.getElementById("<% =txtDictionarySingleId.ClientID %>").innerText = document.getElementById("<% =selDictionarySingle.ClientID %>").options[selectIndex].value ;
document.getElementById('<%=this.ClientID %>myFrame').style.display = 'none';
document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').style.display= 'none'

}
function <% =this.ClientID %>SetDictionaryName(strName)
{
document.getElementById("<% =txtDictionarySingleName.ClientID %>").innerText = strName ;
}
function <% =this.ClientID %>btnDictionarySingleCannelSel()
{
document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').style.display= 'none' ;
document.getElementById('<%=this.ClientID %>myFrame').style.display = 'none';
}
function <% =this.ClientID%>displayDivtxtDictionarySingle()
{
var tt = document.getElementById("<% =txtDictionarySingleName.ClientID %>") ;
var ttop = tt.offsetTop; //TT控件的定位点高

var thei = tt.clientHeight; //TT控件本身的高
var tleft = tt.offsetLeft; //TT控件的定位点宽

while (tt = tt.offsetParent){ttop+=tt.offsetTop; tleft+=tt.offsetLeft;}
if(tleft > document.body.clientWidth / 2)
{

tleft = tleft - document.getElementById('<% =this.ClientID %>divtxtDictionarySingle').clientWidth ;

}
if(ttop > (window.screen.height - 300) / 2)
{

ttop = ttop + thei ;
ttop = ttop - document.getElementById('<% =this.ClientID %>divtxtDictionarySingle').clientHeight ;

}
document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').style.top = ttop ;
document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').style.left = tleft ;
document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').style.display= 'block' ;
document.getElementById('<% =this.ClientID %>txtFilterDictionary').focus() ;
document.getElementById('<%=this.ClientID %>myFrame').style.top = ttop ;
document.getElementById('<%=this.ClientID %>myFrame').style.left = tleft ;
document.getElementById('<%=this.ClientID %>myFrame').style.width = document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').offsetWidth ;
document.getElementById('<%=this.ClientID %>myFrame').style.height = document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').offsetHeight ;
document.getElementById('<%=this.ClientID %>myFrame').style.zIndex = document.getElementById('<% =this.ClientID%>divtxtDictionarySingle').style.zIndex - 1;
document.getElementById('<%=this.ClientID %>myFrame').style.display = 'block';
}
function <% =this.ClientID%>filterDictionary()
{
onKeyCode = event.keyCode ;
if(onKeyCode > 36 && onKeyCode < 41)
{
<% =this.ClientID%>ChangeSelected(onKeyCode)
}
else
if(onKeyCode ==8 || onKeyCode==32 || (onKeyCode > 64 && onKeyCode < 91) || (onKeyCode > 47 && onKeyCode < 57) || (onKeyCode > 95 && onKeyCode < 106) )
{
document.getElementById("<% =txtDictionarySingleKey.ClientID %>").value =document.getElementById("<% =this.ClientID %>txtFilterDictionary").value ;
if(document.getElementById("<% =this.ClientID %>txtFilterDictionary").value != "" )
{
document.getElementById("<% =btnDictionarySinglePostBack.ClientID %>").click() ;
}
else
{
if(onKeyCode ==8)
{
document.getElementById("<% =btnDictionarySinglePostBack.ClientID %>").click() ;
}
}
}
if(onKeyCode == 13)
{

<% =this.ClientID %>OnWorkerSingleselect() ;
}

}

function <% =this.ClientID %>ChangeSelected(KeyCode) //移动Select的选中项

{
selIndex = document.getElementById("<% =selDictionarySingle.ClientID %>").selectedIndex ;
if(KeyCode == 38)
{
if(document.getElementById("<% =selDictionarySingle.ClientID %>").options.length > 0 && selIndex > 0)
{
document.getElementById("<% =selDictionarySingle.ClientID %>").selectedIndex = selIndex - 1 ;
}
}
if(KeyCode == 40 )
{
if(document.getElementById("<% =selDictionarySingle.ClientID %>").options.length > selIndex +1)
{
document.getElementById("<% =selDictionarySingle.ClientID %>").selectedIndex = selIndex + 1 ;
}
}

}

</script>
<input id="txtDictionarySingleName" runat="server" class="tbTextbox" name="txtDictionarySingleName"

readonly="readonly" type="text" value="" />
<asp:RequiredFieldValidator ID="requDictionarySingleId" runat="server" ControlToValidate="txtDictionarySingleId"
ErrorMessage="*" Width="3px"></asp:RequiredFieldValidator>
<input id="txtDictionarySingleId" type="text" runat="server" style="display:none; width: 1px;" name="txtDictionarySingleId" />
<div id="<% =this.ClientID%>divtxtDictionarySingle" onmouseout="ContralHid(this,document.getElementById('<%=this.ClientID %>myFrame'));" class="DIV_CONTRAL" style="width: 310px; height: 220px ; z-index:20000;　 position :absolute ; display: none; left: 800px; top: 40px;">
<table style="width: 200px">
<tr>
<td style="width: 120px ; ">
<input id="<% =this.ClientID %>txtFilterDictionary" style="width: 120px" type="text" onkeyup="<% =this.ClientID %>filterDictionary();" /></td>
<td style="">
<input id="<% =this.ClientID %>btnDictionarySingleSubmit" type="button" class="CoolButton_Blue" value="确定" onclick="return <% =this.ClientID %>OnWorkerSingleselect();" />
<input id="<% =this.ClientID %>btnDictionarySingleCannel" type="button" class="CoolButton_Blue" value="取消" onclick="return <% =this.ClientID %>btnDictionarySingleCannelSel();" />
</td>
</tr>
<tr>
<td colspan="2" style="height: 161px">
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<select id="selDictionarySingle" name="selDictionarySingle" multiple runat="server" style="width: 298px; height: 184px"

></select><br />
<div id="Div1" style="display:none">
<asp:TextBox ID="txtDictionarySingleKey" runat="server"></asp:TextBox>
<asp:Button ID="btnDictionarySinglePostBack" runat="server" Text="" OnClick="btnDictionarySinglePostBack_Click" CausesValidation="False" />
</div>
</ContentTemplate>
</asp:UpdatePanel>
<br />

</td>
</tr>
</table>

</div>
<iframe id="<%=this.ClientID %>myFrame" scrolling="no" frameborder="0" style="position:absolute; top:0px; left:-1px; display :none; width: 6px; height: 1px;" ></iframe>