to saucer(思归):如果在界面里有一个iframe1,在CodeBehind里 我这样定义: Dim iframe1 As HtmlGenericControl If Drpselect.SelectedItem.Value = 1 Then iframe1.Attributes("src") = "NZkaoping_employee.aspx?Detail=0" + "&str=1" + "&employeeid=" & Drpemployee.SelectedItem.Value & "'" End If 但是报错是说“未将对象引用设置到对象的实例”,请问是什么问题?
you need to declare Dim iframe1 As HtmlGenericControl as a member of your Page class
string str=@"<iframesrc="+LinkButtonText+" "+"frameborder=0 vspace=0 width =100% height =100%></iframe>";
mypage.InnerHtml=str;
document.all['myframe'].src= 'http://www.csdn.net';orwindow.frames['myframe'].location.href= 'http://www.csdn.net';
void Btn1_Clicked(Object sender, EventArgs e)
{
myiframe.Attributes["src"]="http://www.csdn.net";
}
void Btn2_Clicked(Object sender, EventArgs e)
{
myiframe.Attributes["src"]="http://www.dev-club.com";
}
</script>
<form id="form1" runat="server">
<asp:button text="show 1" onclick="Btn1_Clicked" runat="server" />
<asp:button text="show 2" onclick="Btn2_Clicked" runat="server" />
</form>
<iframe id="myiframe" runat="server"></iframe>if you are using CodeBehind, declare
HtmlGenericControl myiframe;
If Drpselect.SelectedItem.Value = 1 Then
iframe1.Attributes("src") = "NZkaoping_employee.aspx?Detail=0" + "&str=1" + "&employeeid=" & Drpemployee.SelectedItem.Value & "'"
End If
但是报错是说“未将对象引用设置到对象的实例”,请问是什么问题?
Dim iframe1 As HtmlGenericControl
as a member of your Page class