在用户控件由codebehind无法访问GridView控件事件 [英] Can't access GridView event at usercontrol by codebehind

问题描述

IpInterfaceUC用户控件

<div id="dvChannel" runat="server">
        <asp:GridView ID="gvChannelUC" 
            OnRowCommand="gvChannelUC_RowCommand"
            OnSelectedIndexChanged="gvChannel_SelectedIndexChanged"
        />
</div>

IPServices页codeBehind

if (!IsPostBack){
}else
{    
 string str_btn = Request.Form.Keys[Request.Form.Keys.Count - 1].ToString();
 handleClick(str_btn);
}

问

它总是显示的 str_btn 是null.If我点击按钮，就会显示按钮的id.But当我点击GridView的在选择，它显示的 str_btn 为空。应该显示GridView控件的ID，当我们单击选择。

It always show str_btn is null.If I click Button,It'll show button's id.But when I click Select at GridView,It show str_btn is null.It should be show GridView's id when we click select.

感谢您的任何解释。

推荐答案

按我的理解，你需要电网事件处理（的.ascx）页/ codebehind（的.aspx）。

As per my understanding you need grid event handing (.ascx) on page/codebehind (.aspx).

在用户控件声明事件处理程序

declare eventhandler in userControl

 public event EventHandler<EventArgs>  RaiseSelectedIndexChanged=delegate {};

在userControl.cs手柄用户控件SelectedIndexChanged事件

handle userControl selectedindexchanged event in userControl.cs

   protected void gvChannel_SelectedIndexChanged(object sender, EventArgs e)
    {
        var raiseSelectedIndexChanged = RaiseSelectedIndexChanged ;
        if(raiseSelectedIndexChanged!=null)
        {
            raiseSelectedIndexChanged(sender, e);
        }
    }

注册和ASPX使用您的用户控件（我希望你已经做了）这code会在aspx页面

register and use your userControl in aspx (which I hope you already did) this code will go in aspx page

        <uc:userControl OnRaiseSelectedIndexChanged="OnRaiseSelectedIndexChanged"/>

处理ASPX code事件背后

handle the event in aspx code behind

    protected void OnRaiseSelectedIndexChanged(object sender, EventArgs e)
    {
       //handle your event and put logic 
    }

我希望我说清楚，让我知道，如果它混淆了你。

I hope i make it clear , let me know if it confuses you.

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