Web Forms :: DropDownList - Need Blank Default Value?
Nov 23, 2010
I have a field that is a DropDownList. When in the insert mode I want that field to be blank - It currently is displaying the first record in the table it pulls from. I was expecting to see an initial value setting in the DropDownList properties but do not. For example - suppose I have a field named locations that consist of 4 location (below). In "Insert" mode, location currently displays Dallas. I want it to be set to blank initially and the user select one. What am I mssing?
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Similar Messages:
May 7, 2015
I have house_info table in database and I have dropdownlist in my page that bind it from Shoppingcenter columns from house_info table...
in Shoppingcenter column in some rows are data and some rows are NULL
now when I bind dropdown list it shows space in first Item after that it shows other Item that bind from house_info table I mean in dropdownlist shows NULL value (Space) that is in Shoppingcenter column
below is SP
ALTER procedure [dbo].[selectcentercityS]
@city nvarchar(30)
,@region nvarchar(5)
,@district nvarchar(30)
[Code] .....
I don't want it shows space in dropdownlist. What should I do?
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Oct 20, 2010
I'm used to using VB.net for web programming.Often, I have something like:
Dim s as string = Session("s")
I get a string value for s from the web session. If there is no value in the web session, I get a blank string.However, AFAIK, in C#, I have to have something like the code below to do the same thing.
string s;
try { s = Session["s"].ToString(); }
catch { s = ""; }
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Feb 2, 2011
How to add blank item in dropdownlist without using appenddatabounditem after control parameter refresh?
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Jul 10, 2010
i have dropdownList Binded to a data source and its working fine But want i want to do is when the page loads its initial value should Blank until clicking the dropdown button
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Jul 16, 2010
I created a new blank ASP.NET Website using VS 2008.
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Mar 7, 2010
I am trying to understand the best way of implementing a DropDownList in ASP.NET MVC 2 using the DropDownListFor helper. This is a multi-part question.First, what is the best way to pass the list data to the view?Pass the list in your model with a SelectList property that contains the dataass the list in via ViewDatHow do I get a blank value in the DropDownList? Should I build it into the SelectList when I am creating it or is there some other means to tell the helper to auto create an empty value?
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Jun 9, 2010
I've dynamically added a DropDownList to the Gridview. To this DropDownList I'm trying to add a blank row. I'm not getting any error but why is the blank row not added to the Gridview?
Dim ddlActualPickupTime
As
New DropDownList
objBLLRsrv.FillTimeSlot(ddlActualPickupTime)
ddlActualPickupTime.ID ="dynDDLActualPickupTime"
e.Row.Cells(3).Controls.Add(ddlActualPickupTime)
ddlActualPickupTime.Items.Insert(0,New ListItem("select", -1))
ddlActualPickupTime.SelectedValue = ActualPickupTime.ToString
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Nov 22, 2010
I have a databound dropdown list (ASP.net). I want the page to load with a certain item as the selected item.
I am not adding a blank first row (thats not what i need)I find that I can get this to work with "AppendDataBoundItems" to true, but the side-effect is that I have all the items listed twice.
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Jul 28, 2010
I am trying to set a default value for a dropdown from which i have an SQL datasource, heres my code:
<asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SqlDataSource1" DataTextField="name" DataValueField="name"></asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="..." SelectCommand="SELECT [title_id], [name] FROM [tbl_job_titles]"></asp:SqlDataSource>
I tried adding this:
<asp:ListItem Selected="True" Text="All" Value="All">All</asp:ListItem>
but it didnt work..
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Jun 1, 2010
I have a dropdownlist that is being populated using linq. The code for linq is below
[Code]....
When the page is viewed the dropdownlist show the following;towels, shoes, etc. What I would like is the default item to be nothing. That is when the page is viewed then the drop down list should show something like this "select category". Right now it is starting by showing towels, which is quite irritating, since if I want to see towels I first have to select something else and then go back and select it!
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Jul 9, 2010
I have a dropdown list which I bind through a datasource. How can I inject a default value to it? My db doesn't have a default value and changes are not permitted!
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May 3, 2012
I have dropdownlist i want in my DDL before selecting item show some text:
Like this
Please select city
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Jan 11, 2011
I have a dropdownlist that is not bound to a datasource, I have hard coded a few items in the list cause the list is always constant and will never grow and there are only 4 entries init. Anyway, after i load the page and make a selection from the dropdownlist and do a postback, the dropdown always returns to the default selection...which tells the users to make a selection.How do I get the dropdown to keep the selected value after the postback? I want to be able to display the selected value all through until another selection is made.
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May 7, 2015
dropdown list keep giving value -1 even i choose one of it already. tell me where i was doing wrong?
this is my code
<asp:DropDownList ID="ddl_viewer" runat="server">
</asp:DropDownList>
this is my vb code
Protected Sub LoadViewer()
ddl_viewer.DataSource = SQL_Viewer()
ddl_viewer.DataTextField = ("view_group")
ddl_viewer.DataValueField = ("view_ID")
ddl_viewer.DataBind()
ddl_viewer.Items.Insert(0, New ListItem("-- Choose --", "-1"))
[Code]......
this is my class
Dim sqlCmd As SqlCommand = New SqlCommand("Insert_News", ClsDBConn.GetDBConn)
sqlCmd.CommandType = Data.CommandType.StoredProcedure
Dim sqlParameter As SqlParameter
sqlCmd.Parameters.Add(New SqlParameter("RETURN_VALUE", SqlDbType.Int))
sqlCmd.Parameters("RETURN_VALUE").Direction = ParameterDirection.ReturnValue
[Code]......
and this is my stored procedure
ALTER PROCEDURE [dbo].[Insert_News]
-- Add the parameters for the stored procedure here
@News_Title VARCHAR (500),
@News_Viewer VARCHAR (500),
@News_Message VARCHAR (300),
@News_Author VARCHAR (100),
[Code]...
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Jan 11, 2010
what i have a is a dropdownlist and what i have done is set the datasource to be "select top 10 * from Orders"I have only displayed the OrderID , CustomerID and the Freight i would like to display in a dropdownlist. But what is happening is that for all 10 rows the dame value in the dropdownlist is shown. The dataset that is bound to the dropdownlist initially is all that items in the database.i would like the freight for that particualar Orderid to be displayed even if it is lets say item number 5 in the dropdownlist or itemn number 2 .
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Oct 11, 2010
The intension is to get the all text file names in the drop down present in a particular location. When a user selects any filename from the drop down, it will show the data which is in that particular text file in a GridView.
I've done both the steps and it's almost complete but i stuck on a small issue. Probably because of non-usage of ASP.NET for a long period of time. The problem is, the drop down only selects the default value not other values.Here's my code for DropDown Selected Index Change
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
DirectoryInfo di = new DirectoryInfo(@"C:myLogs");
[code]....
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Dec 27, 2011
URL....If in the dropdownlist before making selection if i want to display like this -----Select a city------How can i do it?
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Jul 3, 2012
My dropdownlist is bind from database table. Now I want to add default item. How can I do that...
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Aug 6, 2010
I have gridview that has month as a column. When the user clicks a row's edit button, that row goes into edit mode. I have created a drop-down list for month in edit mode with the values 1-12. Right now, the drop-down list shows 1. I would like it to show the current value for that row. How do I do this? Here's the code for my gridview:
[Code]....
Here's some applicable code from the code behind:
[Code]....
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Jan 18, 2011
How do i make the default entry in a dropdownlist not selectable? Right now I have a drop down and the users are able to select the default option that says (Select one)...here is what my code look like. I hard coded my options in there cause the list is really short and won't change ever. Right now, users can select the default entry and add it whatever list they are generating on the page...and I would like to make that default visible but not selectable.
[Code]....
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Aug 15, 2012
I have dropdown list in my page
BindDropDownList(DdlDistrict, "District1", "District", "ID");
DdlDistrict.Items.Insert(0, new ListItem("select district", "0"));
And I use this code for binding from database
DdlDistrict.Items.FindByText(_dr["District"].ToString()).Selected = true;
Here if in database have value it show in ddldistrict
Now I want if there wasn't any thing in database in dropdown list show "select district" that i define here
DdlDistrict.Items.Insert(0, new ListItem("select district", "0"));
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May 31, 2010
I have 2 dropdownlist in my detailsview that second dropdownlist get thier data based first dropdownlist selecet value;
following error arised:
Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control
I solve it by this solution:
[Code]....
current problem:
when I want to insert new item ( detailsview insert mode), default value of my DropdownList sent to parmlist
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Jun 2, 2010
I have a form which a user can fill in x times with the data they want too. The form is posted to the following Action.
[HttpPost]
public ActionResult Manage(ProductOptionModel DataToAdd)
{
if (!ModelState.IsValid)
{
return View(DataToAdd);
}
var ProdServ = new ProductService();
if (DataToAdd.ID != 0)
{
//Edit Mode.
DataToAdd = ProdServ.EditProductOption(DataToAdd);
ViewData["Message"] = "Option Changes Made";
}else
{
//Add
DataToAdd = ProdServ.AddProductOption(DataToAdd);
ViewData["Message"] = "New Option Added";
}
var RetModel = new ProductOptionModel() {ProductID = DataToAdd.ProductID};
return View(RetModel);
}
So at the bottom I blank the model (Leaving just the required field) and then return to the view. However the view holds the data from the previously submitted form. I have debugged the code and checked that the RetModel variable is empty.
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Sep 25, 2010
I have a databound dropdownlist, bound to an object datasource. I want to have a default value of "None" inserted at the top of the list and I would like to do this declaritively if possible. After much googling I came up with the below code. However it does not display my default item. I was under the impression that setting the AppendDataBoundItems to True would solve this, however it hasn't.
<asp:DropDownList runat="server" ID="ddl" DataSourceID="ldsCompany" DataTextField="CompanyName" DataValueField="CompanyId" SelectedValue='<%# Bind("CompanyId") %>' AppendDataBoundItems="True">
<asp:ListItem Value="DefaultValue" Text="DefaultText"/>
</asp:DropDownList>
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