如何访问位于从codebehind在ListView控件？ [英] How to access controls located in the listview from codebehind?

问题描述

我有一个名为ListView的 CouncilListView 和一个名为文本框 EmailTextBox 这是在ListView。

我怎样才能访问该文本框从C $ cBehind的$？

我尝试了一些形式的的FindControl 这样的：

  this.Page.FindControl（EmailTextBox）;
this.Page.FindControl（CouncilListView）的FindControl（EmailTextBox）;
this.CouncilListView.Findcontrol（EmailTextBox）;
this.FindControl（EmailTextBox）;
 

但我得到这个错误：

  

对象引用未设置到对象的实例。

解决方案

我解决了这种方式：

 保护无效CouncilListView_ItemInserted（对象发件人，ListViewInsertedEventArgs E）
{
    的foreach（的DictionaryEntry Emailentry在e.Values​​）
    {
        如果（Emailentry.Key ==电子邮件）//表字段名称是电子邮件
        {
            message.To.Add（新MailAddress（Emailentry.Value.ToString（）））;
        }
    }
}
 

I have a ListView called CouncilListView and a TextBox called EmailTextBox which is in the ListView.

How can I access this TextBox from the CodeBehind?

I tried some forms of FindControl like :

this.Page.FindControl("EmailTextBox");
this.Page.FindControl("CouncilListView").FindControl("EmailTextBox");
this.CouncilListView.Findcontrol("EmailTextBox");
this.FindControl("EmailTextBox");

but I get this error:

Object reference not set to an instance of an object.

解决方案

I solved it this way:

protected void CouncilListView_ItemInserted(Object sender, ListViewInsertedEventArgs e)
{
    foreach (DictionaryEntry Emailentry in e.Values)
    {
        if (Emailentry.Key == "Email") //table field name is "email"
        {
            message.To.Add(new MailAddress(Emailentry.Value.ToString()));
        }
    }
}

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