主题：[求助]如何动态判断增加控件

求助，如何在窗口控件panel动态判定是否存在多个chart，然后删除，重新动态创建新chart

以下代码执行总报错

    Dim pn As WinForm.Panel
    Dim chrt As WinForm.Chart
    For Each ctl As winform.control In e.form.controls("pn1").Children
        If e.form.controls("pn1").ExistControl(ctl.name) Then
           e.form.controls("pn1").RemoveControl(ctl.name)
        End If
    Next

代码写了很多测试都报错，具体如何写循环判定删除

解决了

    For Each c As Winform.Control In e.Form.Controls
        If c.name.contains("chart") Then
            e.Form.RemoveControl(c.name)
        End If
    Next