//.net Framework类库中的FindControl方法可以帮助我们访问Formview中的控件:protected void FormView1_ItemCreated(object sender, EventArgs e) { DropDownList test; switch (FormView1.CurrentMode) { case FormViewMode.Edit: test = ((DropDownList)FormView1.Row.FindControl("DropDownList3")); test.Attributes.Add("onchange", "FControl('" + test.UniqueID + "');"); break; case FormViewMode.Insert: test = ((DropDownList)FormView1.Row.FindControl("DropDownList3")); test.Attributes.Add("onchange", "FControl('" + test.UniqueID + "');"); break; } }//上面的程序实现的功能是://给FormView中的EditItemTemplate和InsertItemTemplate中的DropDownList控件加上FControl;//FControl方法的代码是: function FControl(ctlName) { var rowIndex=document.getElementById(ctlName).selectedIndex; if(document.getElementById(ctlName).options[rowIndex].innerText=='58') { document.getElementById('FControl').style.display=""; } else { document.getElementById('FControl').style.display="none"; } }//当DropDownList的值为58时显示id为FControl的组件,否则不显示。 转载于:https://www.cnblogs.com/JoeDZ/archive/2008/02/27/1083260.html