c#年份筛选

年份：

<script type="text/javascript" src="http://www.shicishu.com/down/WdatePicker.js"></script>
<asp:Panel>
	<asp:Label ID="Label3" runat="server" Text="年度:"></asp:Label>
                <input class="Wdate" type="text" onclick="WdatePicker({ dateFmt: 'yyyy', minDate: '2019' })" id="tbxProDate" runat="server">

                <asp:Button ID="bnname" runat="server" Text="查询" OnClick="bnck_click" />

		  protected void bnck_click(object sender, EventArgs e)
        {
            if (Convert.ToString(tbxProDate.Value) == "")
            {

                lbtitle.Text = "请选择年份。";
            }
			FillUI();
        }