Question

我在视图中有2个dropdownlist ..它们中的每一个都可能导致回发我想在导致回发时得到一个名字

              <tr>
                <td>
                    <label>
                        Owner</label>
                </td>
                <td>
                    @Html.DropDownListFor(m => m.OwnerId, new System.Web.Mvc.SelectList(Model.CallForPaperJournalOwnersList, "OwnerId", "Owner"), new { onchange = "submit();" })
                </td>
            </tr>
            <tr>
                <td>
                    <label>
                        Journal Code:</label>
                </td>
                <td>
                    @Html.DropDownListFor(m => m.JournalCode, new System.Web.Mvc.SelectList(Model.JournalsWithCallForPaperHtmlList, "JournalCode", "JournalCode"), new { onchange = "submit();" })

                </td>
            </tr>

Answer 1

在这种情况下......我会使用id：

   <tr>
                <td>
                    <label>
                        Owner</label>
                </td>
                <td>
                    @Html.DropDownListFor(m => m.OwnerId, new System.Web.Mvc.SelectList(Model.CallForPaperJournalOwnersList, "OwnerId", "Owner"), new { id = "btnsave2" })
                </td>
            </tr>
            <tr>
                <td>
                    <label>
                        Journal Code:</label>
                </td>
                <td>
                    @Html.DropDownListFor(m => m.JournalCode, new System.Web.Mvc.SelectList(Model.JournalsWithCallForPaperHtmlList, "JournalCode", "JournalCode"), new { id= "btnchange2" })

                </td>
            </tr>

并调用id

     $('#btnsave1').click(function (event) {
//do stuff here 
}

如果你想对多个DDL进行操作，请不要使用onclick ..使用：

@Html.DropDownListFor(m => m.OwnerId, new System.Web.Mvc.SelectList(Model.CallForPaperJournalOwnersList, "OwnerId", "Owner"), new { @class = "myclass" })

然后在jquery中去：

 $('.myclass').click(function (event) {
//do stuff here 
}

Answer 2

在我的项目中，我这样做

我用我的国家ID填写我的状态下拉列表

这是我的下拉列表

@Html.DropDownListFor(model => model.CountryId, new SelectList(Model.Countries, "ID", "Name"), "select", new { @ID = "ddlCountry", @class = "text", Style = "width: 150px;", onchange = "javascript:cascadingdropdown();" })

我在下面创建了一个像这样的javascript函数

<script type="text/javascript">
    function cascadingdropdown() {            
        var countryID = $('#countryID').val();
        $.ajax({
            url: "/City/State",
            dataType: 'json',
            data: { countryId: countryID },
            success: function (data) {
                $("#stateID").empty();
                $("#stateID").append("<option value='0'>--Select State--</option>");
                $.each(data, function (index, optiondata) {
                    alert(optiondata.StateName);
                    $("#stateID").append("<option value='" + optiondata.ID + "'>" + optiondata.StateName + "</option>");
                });
            },
            error: function () {
                alert('Faild To Retrieve states.');
            }

        });
    }

我认为这会对你有所帮助......

如何确定哪个dropdownlist导致mvc3中的回发？

2 个答案: