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分享mvc 三级联动省市区 无法赋值！！
前台
<script type="text/javascript">
function getCity(provinveCode) {
$("#City").html(""); //清空
$.ajax({
type: "GET",
url: $("#GetCityList").val(),
data: "p=" + provinveCode + "&date=" + new Date(),
dataType: "json",
success: function (json) {
if (json.length > 0) {
for (var i = 0; i < json.length; i++) {
$("#City").append("<option value='" + json[i].Value + "'>" + json[i].Text + "</option>");
}
getTown(json[0].Value);
} else {
$("#City").append("<option value=''>请选择</option>");
}
},
error: function (data) {
alert(data);
}
});
}
function getTown(shi) {
$("#Town").html(""); //清空
$.ajax({
type: "GET",
url: $("#GetTownList").val(),
data: "s=" + shi + "&date=" + new Date(),
dataType: "json",
success: function (json) {
if (json.length > 0) {
for (var i = 0; i < json.length; i++) {
$("#Town").append("<option value='" + json[i].Value + "'>" + json[i].Text + "</option>");
}
} else {
$("#Town").append("<option value=''>请选择</option>");
}
},
error: function (data) {
alert(data);
}
});
}
$(document).ready(function () {
//获取市列表
$("#Province").change(function () { getCity($(this).val()); });
//获取镇列表
$("#City").change(function () { getTown($(this).val()); });
})
</script>
<div class="editor-field">
@Html.DropDownListFor(model => model.Province, ViewBag.Province as
IEnumerable<SelectListItem>)
@Html.DropDownListFor(model => model.City, ViewData["City"] as
IEnumerable<SelectListItem>)
@Html.DropDownListFor(model => model.Town, ViewData["drdaddress"] as
IEnumerable<SelectListItem>)
@*隐藏字段用于在js调用，设置url路径*@
@Html.Hidden("GetCityList", Url.Action("GetCityList", "Sell"))
@Html.Hidden("GetTownList", Url.Action("GetTownList", "Sell"))
</div>
后台
public ActionResult MarketDetail(int MarketId, string O)
{
if (O == "edit")
{
S_MarketModel market = new S_MarketModel();
market = new MarketBll().GetMarket(MarketId);
IList<SelectListItem> Province = new List<SelectListItem>();
foreach (var dr in SettingBll.GetDictionarys(new Sys_DictionaryModel() { TableField = "S_Market-Adress", Lever = 1, ParentID = 0 }))
{
if (market.Province == dr.Value)
{
Province.Add(new SelectListItem { Selected = true, Text = dr.Name, Value = dr.Value.ToString() });
}
else
{
Province.Add(new SelectListItem { Text = dr.Name, Value = dr.Value.ToString() });
}
}
ViewBag.Province = Province;
// ViewData["Province"] = Province;
IList<SelectListItem> City = new List<SelectListItem>();
foreach (var dr in SettingBll.GetDictionarys(new Sys_DictionaryModel() { TableField = "S_Market-Adress", Lever = 2, ParentID = market.Province }))
{
if (market.City == dr.Value)
{
City.Add(new SelectListItem { Selected = true, Text = dr.Name, Value = dr.Value.ToString() });
}
else
{
City.Add(new SelectListItem { Text = dr.Name, Value = dr.Value.ToString() });
}
}
ViewData["City"] = City;
IList<SelectListItem> drdaddress = new List<SelectListItem>();
foreach (var dr in SettingBll.GetDictionarys(new Sys_DictionaryModel() { TableField = "S_Market-Adress", Lever = 3, ParentID = market.City }))
{
if (market.Town == dr.Value)
{
drdaddress.Add(new SelectListItem { Selected = true, Text = dr.Name, Value = dr.Value.ToString() });
}
else
{
drdaddress.Add(new SelectListItem { Text = dr.Name, Value = dr.Value.ToString() });
}
}
ViewData["drdaddress"] = drdaddress;
return View(market);
}
else
if (O == "dele")
{
if (new MarketBll().DeleMarket(MarketId))
{
return RedirectToAction("MarketList");
}
else
{
Response.Write("<script>alert('删除失败!');</script>");
return RedirectToAction("MarketList");
}
}
else
{
IList<SelectListItem> Province = new List<SelectListItem>();
foreach (var dr in SettingBll.GetDictionarys(new Sys_DictionaryModel() { TableField = "S_Market-Adress", Lever = 1, ParentID = 0 }))
{
Province.Add(new SelectListItem { Text = dr.Name, Value = dr.Value.ToString() });
}
ViewBag.Province = Province;
ViewData["City"] = Province;
ViewData["drdaddress"] = Province;
return View(new S_MarketModel());
}
}
三级联动是没有问题
保存也是没有问题
就是编辑信息时 只绑定最后一个下拉框的值
前两个都不赋值
...全文
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moonwrite 2014-12-15
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呵呵 和我之前遇到的：
“那么我之前遇到一个是因为名字是Titie和ViewTitle又冲突或什么的 很奇怪的现象”
一样 不知道是bug 还是什么
luhr 2014-12-14
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编辑信息时 只绑定最后一个下拉框的值
没看见编辑啊，只绑定最后一个下拉框的值是什么意思？你不是说三级联动没有问题么。。。为什么发三级联动的代码。。。
yufeiyunsui 2014-12-14
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找问题的原因了 很扯的原因
@Html.DropDownListFor(model => model.Province, ViewBag.Province as
IEnumerable<SelectListItem>)
前台的 model => model.Province 的 Province 不能跟 ViewBag.Province 的Province 命名一样了
ViewBag.Province 的Province 换个新的命名就好了
好扯。。。 纠结死了。。。
还好解决了
yufeiyunsui 2014-12-14
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编辑就是 给省市区赋值的时候 没有赋上 联动是没问题 为了让代码全
yufeiyunsui 2014-12-14
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Selected 一直都是 false 没有从后台传过来，后台断点看的时候有 到前台就没了 ，selected 属性传不到前台
mvc ViewData 传值 肿么可以这样。。。
qq1746178060 2014-12-13
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调用数据库数据实现省市区三级联动实例
//下拉框局部更新显示设置
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:DropDownList ID="ddlProvince" runat="server" AutoPostBack="True"
onselectedindexchanged="ddlProvince_SelectedIndexChanged">
</asp:DropDownList>
<asp:DropDownList ID="ddlCity" runat="server" AutoPostBack="true"
onselectedindexchanged="ddlCity_SelectedIndexChanged">
</asp:DropDownList>
<asp:DropDownList ID="ddlArea" runat="server">
</asp:DropDownList>
</ContentTemplate>
</asp:UpdatePanel>
//加载绑定下拉框设置
SqlConnection sqlcon;
string strCon = ConfigurationManager.AppSettings["conn"];
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
sqlcon = new SqlConnection(strCon);
string sqlstr = "select Province from tb_Province";
sqlcon.Open();
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
DataSet myds = new DataSet();
myda.Fill(myds);
ddlProvince.DataSource= myds;
ddlProvince.DataValueField = "Province";
ddlProvince.DataBind();
string strCity = "select * from tb_City where Province='" + ddlProvince.SelectedItem.Text + "'";
SqlDataAdapter mydaCity = new SqlDataAdapter(strCity, sqlcon);
DataSet mydsCity = new DataSet();
mydaCity.Fill(mydsCity);
ddlCity.DataSource = mydsCity;
ddlCity.DataValueField = "City";
ddlCity.DataBind();
string strArea = "select * from tb_Area where City='" + ddlCity.SelectedItem.Text + "'";
SqlDataAdapter mydaArea = new SqlDataAdapter(strArea, sqlcon);
DataSet mydsArea = new DataSet();
mydaArea.Fill(mydsArea);
ddlArea.DataSource = mydsArea;
ddlArea.DataValueField = "Area";
ddlArea.DataBind();
sqlcon.Close();
}
//点击省联动二级显示市
protected void ddlProvince_SelectedIndexChanged(object sender, EventArgs e)
{
sqlcon = new SqlConnection(strCon);
string sqlstr = "select * from tb_City where Province='" + ddlProvince.SelectedItem.Text + "'";
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
DataSet myds = new DataSet();
sqlcon.Open();
myda.Fill(myds);
ddlCity.DataSource = myds;
ddlCity.DataValueField = "City";
ddlCity.DataBind();
sqlcon.Close();
}
//点击市联动三级显示区
protected void ddlCity_SelectedIndexChanged(object sender, EventArgs e)
{
sqlcon = new SqlConnection(strCon);
string sqlstr2 = "select * from tb_Area where City='" + ddlCity.SelectedItem.Text + "'";
SqlDataAdapter mysda = new SqlDataAdapter(sqlstr2, sqlcon);
DataSet myds2 = new DataSet();
sqlcon.Open();
mysda.Fill(myds2);
ddlArea.DataSource = myds2;
ddlArea.DataValueField = "Area";
ddlArea.DataBind();
sqlcon.Close();
}
moonwrite 2014-12-13
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@foreach item ViewBag.Province
<div>@item.Text -- @item.Selected</div>
目的 看看是否有Selected为true的
如果有 又没有赋值
那么我之前遇到一个是因为名字是Titie和ViewTitle又冲突或什么的 很奇怪的现象
另外把js去掉，看看是不是被js改变了
以上是个人经验
yufeiyunsui 2014-12-12
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mvc model 就是复制了 怎么我的没有赋值？？
