Search results matching tag 'DropDownList'

i can't access my list box

sumeshss — Wed, 23 Dec 2009 05:00:00 GMT

i have added some values to my asp listbox control from javascript.it is visible on browser too.but while i am accessing it using c# code (count attribute),

it shows count value as zero.can any body help me?

Passing parameters from View to Controller

BrianFan — Wed, 23 Dec 2009 05:00:00 GMT

How do you pass values from a View to a Controller? I have an Html.DropDownList in a view, and need to get the selected value/text back to the controller.

 <% using (Html.BeginForm("FileUpload", "Admin", 
                    FormMethod.Post, new { enctype = "multipart/form-data" }))
        {%>
        <div class="padded"><%= Html.DropDownList("UploadOptions") %></div>
        <fieldset>
        <legend>Browse for a file</legend>
        <input name="uploadFile" type="file" size="40" />
        </fieldset>
        <hr />
        <input type="submit" value="Upload File" />
<%} %>

 public class AdminController : Controller
    {
        bool _wasSuccess;
        //
        // GET: /Admin/

        public ActionResult Admin()
        {
            return View();
        }

        public ActionResult Success()
        {
            return View();
        }

        public ActionResult Error()
        {
            return View();
        }

        public ActionResult UploadData()
        {
            ViewData["UploadOptions"] = new SelectList(new [] {"--Select A Document Type--", "DDRT", "AKZ"});
            return View();
        }

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult FileUpload(HttpPostedFileBase uploadFile)
        {
            _wasSuccess = true;
            try
            {
                if (uploadFile.ContentLength > 0)
                {
                    string filePath = Path.Combine(HttpContext.Server.MapPath("../Uploads"),
                        Path.GetFileName(uploadFile.FileName));
                    uploadFile.SaveAs(filePath);
                }
            }
            catch (Exception ex) { _wasSuccess = false; }

            if (_wasSuccess == true)
                return View("Success");
            else
                return View("Error");
        }
    }

Displaying the SelectedItem as a Label / TextBox

quentins — Sun, 20 Dec 2009 05:00:00 GMT

In the ASCX I love the simplicity of the Html.DropDownList("", ViewData["Users"] as IEnumerable<SelectListItem>)

and thhe use of the UIHint to select this. But there are times I need to show this for display purposes such as in Grids or on a Read Only Display page. In these cases it would be great if I could use the same approach to get the item, but if not what is the best approach to getting this text?

For reference I use this in my Controller to generate the list for thhe controller - ViewData["Users"] = new SelectList(c_User.Items, "UserID", "FullName");

Is there a way to do this so it can be used in a Label or a TextBox (I want to show the same data as would be in a DropDown for the SELECTED ITEM) but just not let the user edit it. I could hard code this but that doesn't seem the best approach as I have 2 (or more) cases where this is needed just for User Names.

Tanks in advance for any help!

How to filter data in html dropdown lists

cmakwana — Thu, 10 Dec 2009 05:00:00 GMT

hi.

In my application on edit page i have three drop down lists for country,states and cities.

If i use cascading dropdown list for state and city then i am facing problem.

If user does chage Country from country's dropdown list then dropdowns for state and city remains blank though it is edit page.

So what i want to do is ,i want to show values in all the dropdowns as user has submitted previously.

Another problem with cascading dropdown list is that,its selected value is lost if control comes to that page again after post.

please help me with this .

i m confused.

thanking in advance.

Disabling a Specific Column in Listview for Editing

nencarnacion — Wed, 09 Dec 2009 05:00:00 GMT

I have a Listview and a dropdown list. The dropdown list contains all of the columns shown in the listview. What i want to do is that whenever i select an item from the dropdown list, the corresponding column in the listview will be disabled for editing. How do i do this guys?

CompositeControl - DropDownList and LinqDataSource.Selecting Issue

azurfire — Mon, 07 Dec 2009 05:00:00 GMT

Hi,

So I am creating a composite control. The idea is to have some dropdown lists that filter the results returned by the LinqDataSource.

Inside CreateChildControls(), I create the LinqDataSouce and the dropdown lists. If the page is not a postback, I add a "View All" item to the dropdown lists and then databind them to fill them with items from a database. Then I add WhereParameters (ControlParameters) to the LinqDataSource for each of the dropdown lists.

The problem is that when the LinqDataSource selects its items, the where parameters are all set to "View All" instead of what was selected. I think the states of the dropdown lists are not being restored until after the LinqDataSource does the select. If I check the state of the dropdown lists while the LinqDataSource is selecting, they are all empty. If I check at a later time, such as during PreRender(), all the dropdown lists have the correct items and selected values.

So does anyone know how to make sure the states of the dropdown lists are restored before the LinqDataSource selects?

Thank you.

Re: SelectedIndexChanged called when nothing changes...

james_t — Fri, 04 Dec 2009 05:00:00 GMT

Hi All!

Can someone shed light on a similar problem here, hopefully this trail is still active...

I have 4 cascading dropdownlists (named ddlCountryID_edt, ddlProvinceID_edt, ddlCityID_edt, ddlSuburbID_edt) located in the EditTemplate of a FormView (named fmvEnterpriseDetails) which in turn is located inside the ContentPlaceHolder derived from a masterpage.

The 4 dropdownlists populate each other one after another in turn by means of AJAX service calls in a manner similar to the AJAX Sample Website Database Cascading DropdownLists.

The problem is with the last one ddlSuburbID_edt. I needed to grab some values from the database based on selections in all 4 dropdowns, so i wired a SelectedIndexChanged handler to ddlSuburbID_edt and set both EnableViewState and AutoPostBack to "true" on ddlSuburbID_edt.

The SelectedIndexChanged fires as expected when i select a value in ddlSuburbID_edt. The problem is that the handler also fires when i click a button such as btnUpdate or btnCancel. How do i stop the event handler from firing when i click these buttons? I have also tried setting EnableViewState to true and to false in the ContentPlaceHolder tag to no avail. I have also set AutoEventWireUp to false in the page directive. Still no solution! By the way when i set EnableViewState on ddlSuburbID_edt to false, the selectedindexhandler doesnt fire anymore when an iten is selected in the dropdownlist!

Here is a stripped down extrcat of my aspx page------

  <asp:FormView ID="fmvEnterpriseDetails" runat="server" 
        BorderColor="#0099FF" BorderStyle="Solid" 
        BorderWidth="1px" DataSourceID="odsEnterpriseDetails" Width="100%" AllowPaging="true" 
        DataKeyNames="strEnterpriseID" 
        onitemcommand="fmvEnterpriseDetails_ItemCommand" 
        onitemcreated="fmvEnterpriseDetails_ItemCreated">
        <EditItemTemplate>
                <table width="100%">
                     <tr>
                        <td><asp:Label ID="lblCountryID_edt" runat ="server" Text = "Country:"/> </td>
                        <td>
                        <asp:DropDownList ID="ddlCountryID_edt" runat="server" EnableViewState="true"  Width="240px"/>
  
                         </td>
                        </tr>
                     <tr>
                        <td><asp:Label ID ="lblProvinceID_edt" runat="server" Text ="Province:" /></td>
                        <td>
                        <asp:DropDownList ID="ddlProvinceID_edt" runat="server" Width="240px" EnableViewState="true"/>
                            </td>                    
                    </tr>
                     <tr>
                        <td><asp:Label ID="lblCityID_edt" runat ="server" Text = "City:"/> </td>
                        <td>
                        <asp:DropDownList ID="ddlCityID_edt" runat="server" Width="240px"  EnableViewState="true"/>
    
                        </td>
                        </tr><tr>
                        <td><asp:Label ID ="lblSuburbID_edt" runat="server" Text ="Suburb:" /></td>
                        <td>
                        <asp:DropDownList ID="ddlSuburbID_edt" runat="server" Width="240px" 
                                EnableViewState="true" AutoPostBack="True" 
                                onselectedindexchanged="ddlSuburbID_edt_SelectedIndexChanged"/>
    
                        </td>
                    </tr>
 
                    <tr>        
                        <td valign="top"  colspan="2" align="center">
                            <asp:ImageButton ID="btnUpdate" runat="server" CommandName="Update" ToolTip="Save Changes"
                            ImageUrl="~/images/buttons/1button-save.gif" ValidationGroup="editvalidator" /> 
                            <asp:ImageButton ID="btnCancel" runat="server" CausesValidation="False" CommandName="Cancel" ToolTip="Cancel"
                            ImageUrl="~/images/buttons/1button-cancel.gif" />
                        </td>
                    </tr>                    
                </table>
            
                <cc1:CascadingDropDown ID="ccdCountries_edt" 
                                       runat="server" 
                                       TargetControlID="ddlCountryID_edt" 
                                       Category="Country" 
                                       PromptText="Choose a Country...." 
                                       LoadingText="Please wait ..." 
                                       ServicePath="~/webservices/CountriesService.asmx" 
                                       ServiceMethod="GetCountries"
                                       EmptyValue = "-1" 
                                       SelectedValue='<%# Eval("intCountryID") %>' 
                                       EnableViewState="true"
                                       >
                </cc1:CascadingDropDown>
                <cc1:CascadingDropDown ID="cddProvinces_edt" 
                                       runat="server" 
                                       TargetControlID="ddlProvinceID_edt" 
                                       ParentControlID="ddlCountryID_edt" 
                                       Category="Province" 
                                       PromptText="Choose a Province...." 
                                       LoadingText="Please wait ..." 
                                       ServicePath="~/webservices/CountriesService.asmx" 
                                       ServiceMethod="GetProvinces" 
                                       EmptyValue = "-1" 
                                       SelectedValue='<%# Eval("intProvinceID") %>' 
                                       EnableViewState="true"
                                       >
                </cc1:CascadingDropDown>
                <cc1:CascadingDropDown ID="cddCities_edt" 
                                       runat="server" 
                                       TargetControlID="ddlCityID_edt" 
                                       ParentControlID="ddlProvinceID_edt" 
                                       Category="City" 
                                       PromptText="Choose a City...." 
                                       LoadingText="Please wait ..." 
                                       ServicePath="~/webservices/CountriesService.asmx" 
                                       ServiceMethod="GetCities"
                                       EmptyValue = "-1" 
                                       SelectedValue='<%# Eval("intCityID") %>' 
                                       EnableViewState="true"
                                       >
                </cc1:CascadingDropDown>
                
                <cc1:CascadingDropDown ID="cddSuburbs_edt" 
                                       runat="server" 
                                       TargetControlID="ddlSuburbID_edt" 
                                       ParentControlID="ddlCityID_edt" 
                                       Category="Suburb" 
                                       PromptText="Choose a Suburb...." 
                                       LoadingText="Please wait ..." 
                                       ServicePath="~/webservices/CountriesService.asmx" 
                                       ServiceMethod="GetSuburbs" 
                                       EmptyValue = "-1" 
                                       SelectedValue='<%# Eval("intSuburbID") %>' 
                                       EnableViewState="true"
                                       >
                </cc1:CascadingDropDown>               
   
          </EditItemTemplate>

and here is a selection of the handler in the codebehind------- by the way i have a GoogleMapforASP User control on the page that i reference. Its not an issue here. Just the SelectedIndexChanged hander that executes when not expected.

   protected void ddlSuburbID_edt_SelectedIndexChanged(object sender, EventArgs e)
    {
            
            DropDownList ddlCountryID = (DropDownList)fmvEnterpriseDetails.FindControl("ddlCountryID_edt");
            DropDownList ddlProvinceID = (DropDownList)fmvEnterpriseDetails.FindControl("ddlProvinceID_edt");
            DropDownList ddlCityID = (DropDownList)fmvEnterpriseDetails.FindControl("ddlCityID_edt");
            DropDownList ddlSuburbID = (DropDownList)fmvEnterpriseDetails.FindControl("ddlSuburbID_edt");

            int intCountryID = Convert.ToInt32(ddlCountryID.SelectedValue.ToString());
            int intProvinceID = Convert.ToInt32(ddlProvinceID.SelectedValue.ToString());
            int intCityID = Convert.ToInt32(ddlCityID.SelectedValue.ToString());
            int intSuburbID = Convert.ToInt32(ddlSuburbID.SelectedValue.ToString());

            string strBoundsX1 = "0.00000";
            string strBoundsY1 = "0.00000";
            string strBoundsX2 = "0.00000";
            string strBoundsY2 = "0.00000";
            string strSuburbLatitude = "0.00000";
            string strSuburbLongitude = "0.00000";
            if (intCountryID > 0 && intProvinceID > 0 && intCityID > 0 && intSuburbID > 0)
            {
                // Grab the Suburb limits
                Suburb mySuburb = new Suburb();
                SqlDataReader reader = mySuburb.Get_tblSuburb_byCPCS(intCityID, intProvinceID, intCountryID, intSuburbID);
                while (reader.Read())
                {
                    strBoundsX1 = reader["strBoundsX1"].ToString();
                    strBoundsY1 = reader["strBoundsY1"].ToString();
                    strBoundsX2 = reader["strBoundsX2"].ToString();
                    strBoundsY2 = reader["strBoundsY2"].ToString();
                    strSuburbLatitude = reader["strGPSLatitude"].ToString();
                    strSuburbLongitude = reader["strGPSLongitude"].ToString();
                }

            }
            TextBox strBoundsX1_edt = (TextBox)fmvEnterpriseDetails.FindControl("strBoundsX1_edt");
            TextBox strBoundsY1_edt = (TextBox)fmvEnterpriseDetails.FindControl("strBoundsY1_edt");
            TextBox strBoundsX2_edt = (TextBox)fmvEnterpriseDetails.FindControl("strBoundsX2_edt");
            TextBox strBoundsY2_edt = (TextBox)fmvEnterpriseDetails.FindControl("strBoundsY2_edt");

            TextBox strGPSLatitude_edt = (TextBox)fmvEnterpriseDetails.FindControl("strGPSLatitude_edt");
            TextBox strGPSLongitude_edt = (TextBox)fmvEnterpriseDetails.FindControl("strGPSLongitude_edt");

            strBoundsX1_edt.Text = strBoundsX1;
            strBoundsY1_edt.Text = strBoundsY1;
            strBoundsX2_edt.Text = strBoundsX2;
            strBoundsY2_edt.Text = strBoundsY2;

            strGPSLatitude_edt.Text = strSuburbLatitude;
            strGPSLongitude_edt.Text = strSuburbLongitude;

            gmap.GoogleMapObject.Points["enterprise"].Latitude = Convert.ToDouble(strSuburbLatitude);
            gmap.GoogleMapObject.Points["enterprise"].Longitude = Convert.ToDouble(strSuburbLongitude);

            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["TopLeft"].Latitude = Convert.ToDouble(strBoundsY1);
            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["TopLeft"].Longitude = Convert.ToDouble(strBoundsX1);

            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["BottomRight"].Latitude = Convert.ToDouble(strBoundsY2);
            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["BottomRight"].Longitude = Convert.ToDouble(strBoundsX2);

            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["TopRight"].Latitude = Convert.ToDouble(strBoundsY1);
            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["TopRight"].Longitude = Convert.ToDouble(strBoundsX2);

            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["BottomLeft"].Latitude = Convert.ToDouble(strBoundsY2);
            gmap.GoogleMapObject.Polygons["SuburbBounds"].Points["BottomLeft"].Longitude = Convert.ToDouble(strBoundsX1);
        
    }

DropDownList and AppendDataBoundItems in GridView EditItemTemplate

SparTodd — Wed, 02 Dec 2009 05:00:00 GMT

I have a GridView, which in the EditItemTemplate contains a DropDownList. In the ItemTemplate itself the value displayed in the label is databound. In the EditItemTemplate, though, I'm not only trying to bind the data from the database, but also offer additional values.

My problem is that when I click an Edit button for the row and the mode changes, the DropDownList is defaulting to the first value in the ListItems. For example, if a row contains a value of "8:15 AM", how can I set this up so that in Edit mode the DropDownList defaults to "8:15 AM" but also displays the other values available to make a selection from?

<asp:GridView runat="server" id="exceptionsGridView" AutoGenerateColumns="false" />
	<columns>
		<asp:TemplateField>
			<ItemTemplate>
				<asp:Label runat="server" Visible="true" id="lblBeginHM1"  
					Text='<%# String.Format("{0:h:mm tt}", Convert.ToDateTime(Eval("P1STARTHR"))) %>'>
				</asp:Label>
			</ItemTemplate>
			<EditItemTemplate>
				 <asp:DropDownList runat="server" ID="editP1BeginTimeDDL"  AutoPostBack="False" 
					DataTextFormatString='<%# String.Format("{0:h:mm tt}", Convert.ToDateTime(Eval("P1STARTHR"))) %>' 
					AppendDataBoundItems="true"  DataValueField="STRHR1"  >
						<asp:ListItem Text="7:00 AM" Value="0700"></asp:ListItem>
						<asp:ListItem Text="7:15 AM" Value="0715"></asp:ListItem>
						<asp:ListItem Text="7:30 AM" Value="0730"></asp:ListItem>
						<asp:ListItem Text="7:45 AM" Value="0745"></asp:ListItem>
						<asp:ListItem Text="8:00 AM" Value="0800"></asp:ListItem>
						<asp:ListItem Text="8:15 AM" Value="0815"></asp:ListItem>
						<asp:ListItem Text="6:30PM" Value="1830"></asp:ListItem>
						<asp:ListItem Text="6:45PM" Value="1845"></asp:ListItem>
						<asp:ListItem Text="7:00PM" Value="1900"></asp:ListItem>
						<asp:ListItem Text="7:15PM" Value="1915"></asp:ListItem>
						<asp:ListItem Text="7:30PM" Value="1930"></asp:ListItem>
						<asp:ListItem Text="7:45PM" Value="1945"></asp:ListItem>
				</asp:DropDownList>
			</EditItemTemplate>
		</asp:TemplateField>
	</columns>
</asp:GridView>

I appreciate any help and advice.

Dynamically creating Template Field in GridView

pjlyons — Fri, 20 Nov 2009 05:00:00 GMT

I'm looking to create a template field and add it to my GridView control.

I need this template field to contain a drop down list.

Here's what I have so far...

TemplateField TestLab = new TemplateField();

TestLab.ItemTemplate =

I'm not sure then how to define the ItemTemplate field, since I can't create an instance of an ItemTemplate. How would I define a new ItemTemplate?

I know how to do the above in the code (see below), but not in code-behind.

<asp:TemplateField HeaderText="Assigned Bench" ItemStyle-Width="15%">

<asp:DropDownList ID="AssignedTestBenchList" runat="server" AutoPostBack="True" OnSelectedIndexChanged="TestBenchChanged" Visible="false" Width="100px" />

</ItemTemplate>

</asp:TemplateField>

Thanks,

Paul

Re: Setting the default value in dropdownlist

smcirish — Tue, 17 Nov 2009 05:00:00 GMT

After your databind to the dropdown list, you can also add another additional value to the dropdown list

ddl.Items.Add("none");

Then you can make whatever value you add above, the default value:

ddl.SelectedValue = "none";