ASP.NET无法更改FormView控件的可见性 [英] ASP.NET Can not Change Visibility of a Formview control

问题描述

我觉得这是愚蠢的，但什么是地狱......

I feel this is stupid, but what the hell...

这是两行处理一个DropDownList事件的方法：

this is two lines of a methods that handles a dropdownlist event:

        resolve = (Button)FormView1.FindControl("btn_resolve");
        resolve.Visible = true;

它曾经与我早期的工作！现在没有工作

It used to work with me earlier! Not working now

推荐答案

您需要使用FormView控件数据绑定事件像

you need to use formview Databound event like

 protected void FormView1_DataBound(object sender, EventArgs e)
{
    if (FormView1.CurrentMode == FormViewMode.Edit)
    {
        btn_resolve = (Button)FormView1.FindControl("btn_resolve");
        resolve.Visible = true;
    }
}

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