C# 清除动态用户控件容器

如何使动态材质为空或清除viewstate

当用户单击submit时，我想重置容器，使所有文本框都为空

你知道我该怎么解决这个问题吗

    private materials[] _dynamicMaterials; // Container for dynamically added UserControl "materials.ascx"

    protected void Page_PreInit(object sender, EventArgs e)
    {
        GetPostBackControl(Page);
    }


    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        if (!this.DesignMode)
        {
            int count = MySession.Current.UserControlCount;
            _dynamicMaterials = new materials[count];

            for (int i = 0; i < count; i += 1)
            {
                Control newcont = LoadControl("materials.ascx");
                newcont.ID = "materialControl" + i.ToString();
                myPlaceHolder1.Controls.Add(newcont);
                _dynamicMaterials[i] = (materials)newcont;
            }
        }
    }

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不清楚是否需要跟踪该容器的ViewState，但假设不需要，最简单的解决方案是在容器上将EnableViewState设置为false：

<asp:Panel ID="pnlContent" runat="server" EnableViewState="false">
    <!-- your controls here -->
</asp:Panel>

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您是否尝试过ViewState.Clear；？ViewState.clear；不起作用。

pnlContent.Controls.OfType<TextBox>().ToList().ForEach(t => t.Text = string.Empty);