选择省份、选择省市区举例【c#】【js】

<style type="text/css">
 
              .labelhide {
        -webkit-box-shadow: 0px 1px 0px 0px #f3f3f3 !important;
        , inset 0px 1px 2px 0px #f3f3f3 !important;
        box-shadow: 0px 1px 0px 0px #f3f3f3 !important;
        , inset 0px 1px 2px 0px #f3f3f3 !important;
        background: #f8f8f8 !important;
        border: 1px solid #f8f8f8 !important;
        color: #f3f3f3 !important;
        width: 1px !important;
        float:left;
    }
    .leftcss {
    float: left;
    }
</style>
<script type="text/javascript" src="http://www.shicishu.com/down/provincecity.data.min.js"></script>
<script type="text/javascript" src="http://www.shicishu.com/down/provincecity.min.js"></script>
 
<tr>
            <td>
                <asp:Label ID="Label15" runat="server" Text="地区:"></asp:Label>
            </td>
            <td colspan="3">
                <asp:Label runat="server" ID="lbl332city" CssClass="leftcss" ></asp:Label>
                <asp:Label runat="server" ID="Label8" CssClass="leftcss" Text="。  请选择市：" ></asp:Label>
                <asp:TextBox runat="server" ID="tbcity" CssClass="labelhide"></asp:TextBox>
                <div class="form-inline leftcss">
                    <div data-toggle="provincecity">
	                    <div class="form-group">
                            <label class="sr-only" for="province1">Province</label>
                            <select id="province1"></select>
                        </div>
                        <div class="form-group">
                            <label class="sr-only" for="city1">City</label>
                            <select id="city1" onclick="selectcity()"></select>
                        </div>
                    </div>
                </div>
 
            </td>
        </tr>
 <script type="text/javascript">
        var vc = document.getElementById('<%=lbl332city.ClientID%>');
        var al = document.getElementById("city1").value;
        var vas = document.getElementById('<%=tbcity.ClientID%>');
          if (vc.innerText != "") {
               vas.setAttribute("value", vc.innerText);
            } else if(vc.innerText == "") {
                if (al == "") {
                    va.setAttribute("value", "");
                }
            }
        function selectcity() {
            var a = document.getElementById("city1").value;
            var va = document.getElementById('<%=tbcity.ClientID%>');
            vc.innerHTML = a;
             if (a != "") {
                    va.setAttribute("value", a);
                } else  if (a == "") {
                    va.setAttribute("value", "");
                }
        }
    </script>
 
 if (Convert.ToInt32(lblID.Text) > 0)
	lbl332city.Text= Convert.ToString(data.Rows[0][1]);
	}
	 protected void btnSubmit_Click(object sender, EventArgs e)
        {
	lbl332city.Text = tbcity.Text;
            if (CheckInput())
            {
			//addinfo/update
 
			//use：
			tbcity.Text
			}
 
	}
	 private bool CheckInput()
        {
            bool Result = true;
 
	    if (tbcity.Text=="") {
                lblMessage.Text = "请选择城市";
                Result = false;
            }
            return Result;
        }