selectedvalue

问题 markup: <div style="float:left;margin-top:15px;width:80px"> <asp:DropDownList ID="MyList" runat="server" Width="100px"></asp:DropDownList> </div> code: // clear vehicles list MyList.Items.Clear(); // add 'all' option MyList.Items.Add(new ListItem("ALL", "0")); // add assets foreach (CustomClass item in items) MyList.Items.Add(new ListItem(item.Name, item.ID.ToString())); No event triggering for SelectedIndexChanged since it's not necessary. When I click the button for postback, the value of

问题 markup: <div style="float:left;margin-top:15px;width:80px"> <asp:DropDownList ID="MyList" runat="server" Width="100px"></asp:DropDownList> </div> code: // clear vehicles list MyList.Items.Clear(); // add 'all' option MyList.Items.Add(new ListItem("ALL", "0")); // add assets foreach (CustomClass item in items) MyList.Items.Add(new ListItem(item.Name, item.ID.ToString())); No event triggering for SelectedIndexChanged since it's not necessary. When I click the button for postback, the value of

问题 I have a dropdownlist which I declare on the aspx markup like so: <asp:DropDownList ID="State" runat="server"></asp:DropDownList> Then I bind it on page load like so : protected void Page_Load(object sender, EventArgs e) { BindDropdowns(); } private void BindDropdowns() { State.DataSource = DataAccess.GetStates(); State.DataValueField = "FieldId"; State.DataTextField = "FieldName"; State.DataBind(); } The selected value is not retained after postback, I also cannot fire the

问题 In my Gridview I have the following template field: <asp:TemplateField HeaderText="Dept Code" SortExpression="DeptCode"> <ItemTemplate> <%# Eval("DeptCode") %> </ItemTemplate> <EditItemTemplate> <asp:DropDownList ID="ddlDeptCode" runat="server" SelectedValue='<%# Eval("DeptCode") %>' DataSource='<%# GetAllDepartments() %>' DataTextField="DeptCode" DataValueField="DeptCode" /> </EditItemTemplate> </asp:TemplateField> This works great when I click Edit on a row it populates the DropDownList

问题 I'm using angular5 ng-select component: https://github.com/ng-select/ng-select and try to set the selected value (programatically) when the container component first loaded (kind of default selected value set in the model). I didn't find any relevant attribute for it or for the isSelected for each item. Here is my code (filtered): HTML: <ng-select [items]="filter.values" bindLabel="text" bindValue="id" class="input-md" [(ngModel)]="filter.selectedValue"></ng-select> Model: export class

问题 I'm having trouble getting the selected value using the select_tag. On my new.html.erb, I have a following code: <%= select_tag "dams_provenance_collection[subjectType][]", options_for_select(subjectTypeArray), :prompt=>"Select subject type" %> and on edit.html.erb, I want to use the selected value from new.html.erb as a default, so I tried: <%= select_tag 'dams_provenance_collection[subjectType][]', options_for_select(subjectTypeArray, params[:selected]) %> but it didn't work. Does anyone

问题 I want to compare select boxes selected option value, and if there are duplicate values in the select boxes I want to show alert: alert("Duplicate value!"); This is my code: <select class="examSelect"> <option value="one">ba</opion> <option value="two">woo</opion> <option value="three">coo</opion> <option value="four">po</opion> </select> <select class="examSelect"> <option value="one">ba</opion> <option value="two">woo</opion> <option value="three">coo</opion> <option value="four">po</opion>

问题 I tried to change a dropdownlist selected value from a c# code : <repeater > <repeater> <dropdown> and I add a datasource in aspx page to the dropdown every thing works fine .. but I want to change the selected value onload of the dropdown to be able to show the user the previous selected name when edit the table protected void PrepairDropDownList(object sender,EventArgs e) { shiftrepeater.DataBind(); if (shiftrepeater.Items.Count > 0) { for (int shiftcount = 0; shiftcount < shiftrepeater

问题 Basically, the codes I have is from here : http://ranafaisal.wordpress.com/2009/02/17/dynamically-adding-removing-textboxes-in-aspnet-repeater/ However, the thing is that, I will need a dropdownlist with textboxes. The purpose of having dropdownlist is to allow users to select their country of origin. They have the option to Add or Remove the particulars they have entered before. This is my error message: 'ddlName' has a SelectedValue which is invalid because it does not exist in the list of

问题 I am BATTLING to get the selected values (please note VALUES not TEXT) from a Winforms Listbox that has multi-select enabled and has been bound to a database table getting the Name (as DisplayMember) and ID (as ValueMember) - I need the ID of the selected items. The listbox control has properties for SelectedValue to get one of the selected items values, but not for all selected items values. The SelectedItems property returns a Listbox.SelectedObjectCollection from which I cannot seem to