DevExpress ComboBox SelectedIndexChanged in asp.net mvc答案

【问题标题】：DevExpress ComboBox SelectedIndexChanged in asp.net mvcDevExpress ComboBox SelectedIndexChanged in asp.net mvc
【发布时间】：2016-11-08 20:01:23
【问题描述】：

控制器：

public ActionResult ComboBox()
{

List<ComboBoxClass> Products = new List<ComboBoxClass>();
Products.Add(new ComboBoxClass { ProductName = "Masa" });
Products.Add(new ComboBoxClass { ProductName = "Sandalye" });
Products.Add(new ComboBoxClass { ProductName = "Bilgisayar" });
Products.Add(new ComboBoxClass { ProductName = "Laptop" });
Products.Add(new ComboBoxClass { ProductName = "Kulaklık" });
Products.Add(new ComboBoxClass { ProductName = "Bardak" });
Products.Add(new ComboBoxClass { ProductName = "Kalem" });
Products.Add(new ComboBoxClass { ProductName = "Seramik" });
Products.Add(new ComboBoxClass { ProductName = "Telefon" });

ViewData["Products"] = Products;

return View(Products);
}

查看：

@Html.DevExpress().ComboBox(
settings =>
{
settings.Name = "BenimComboBox";
settings.Width = 180;
settings.Properties.ValueField = "ProductName";
settings.SelectedIndex = -1;
settings.Properties.IncrementalFilteringMode = IncrementalFilteringMode.StartsWith;
settings.Properties.DropDownStyle = DropDownStyle.DropDown;
settings.Properties.TextField = "ProductName";
settings.Properties.ValueField = "ProductName";
}
).BindList(ViewData["Products"]).GetHtml()

类

public class ComboBoxClass
    {
        public string ProductName { get; set; }
    }

我有产品。我在 ComboBox 上列出所有产品。如何将我的 SelectedIndexChanged 值传递给 ActionResult？

我想在“string SelectedItem”下面看到选定的值

public ActionResult SelectedItemHere(string SelectedItem)
{
// Processes..
return View();
}

【问题讨论】：

标签： devexpress

【解决方案1】：

您需要将以下代码添加到您的 Combobox，

settings.Properties.ClientSideEvents.SelectedIndexChanged = "SelectedId";

之后

布局中的 Javascript 代码

function SelectedId() {
var data= {
SelectedItem: BenimComboBox.GetValue(),
};

$.ajax({
url: "/YOUR CONTROLLER/YOUR ACTİONRESULT",
type: "POST",
dataType: "json",
contentType: 'application/json',
data: JSON.stringify(data),

最后，

控制器：

public ActionResult SelectedItemHere(string SelectedItem)
{
// Processes..
return View();
}

【讨论】：

工作完美，除了我必须做一点小改动。发布它以防其他用户无法运行该功能。 settings.Properties.ClientSideEvents.SelectedIndexChanged = "function(s,e){ getData()}";

【解决方案2】：

通过客户端访问 DevExpress ComboBox Selected Index

function OnComboBoxSelectedIndexChanged(e, s) {
    //check seleted index 

    var selected_index = e.lastSuccessValue;
    alert(selected_index);
            
  }

<dx:ASPxComboBox ID="cbsample"  runat="server" AutoPostBack="true">
<ClientSideEvents  SelectedIndexChanged="OnComboBoxSelectedIndexChanged" />
  
  <Items>
         <dx:ListEditItem  Text="item name"    Value="0" />
         <dx:ListEditItem  Text="item name1"  Value="1" />
         <dx:ListEditItem  Text="item name2" Value="2"  />
  </Items>
  
</dx:ASPxComboBox>

【讨论】：