Web Forms :: Is It Possible To Display The Items In A Dropdown List Not By The Order Of Insertion
Jul 7, 2010Is it possible to display the items in a dropdown list not by the order of insertion?
i want to display the orders alphabetically.
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Feb 24, 2010I'm designing my own custom control that contains a .NET dropdownlist. What I'm wondering is if it is possible to populate my dropdownlist with listitems placed in a placeholder? For example:
<asp:DropDownList ID="ddlFilter" runat="server" >
<asp:PlaceHolder ID="ListItemPlaceholder" runat="server"/>
</asp:DropDownList>
This doesn't work because the DropDownList control only allows ListItems as child controls. But, I want to do something similar to this so when the user includes my control on a page, they can do something like this:
<mytag:MyControl Mode="DropDown" runat="server">
<ListItemTemplate>
<asp:ListItem Text="C" Value="c"></asp:ListItem>
<asp:ListItem Text="E" Value="e"></asp:ListItem>
<asp:ListItem Text="B" Value="b"></asp:ListItem>
</ListItemTemplate>
</myTag:MyControl>
I know I can do this by dynamically adding the ListItems in the page code behind, but I'd like to avoid that if possible.
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[Code]....
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Mar 12, 2010I have a drop down that lists all our 40+ locations.. I then have a list box with all our locations as well. The client is presented with the question which locations have you worked at before. If they pick say 3 locations, i need to remove or disable those 3 from the drop down. I have other code for creating a drop down, but not sure where to go with this.
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[Code]....
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Within the formview, i have added drop down lists that are binded to the hobbies and Colors tables so they can edit their previous selection.On clicking Uodate update formview calls an Update Method that adds new selections to the User databaseNow I have two questionsIs it possible to show in the dropdown list the selected value that the User has already made?If the user only changes hobbies and not colors when they click update will a null value be passed into the data table for colors that replaces their previous selection?
Populating A DropDown List With Multiple Items?
Apr 30, 2010I am running into some additional difficulties with dropdown lists, and I'm hoping you can correct my thinking.
I have a table populated with items; ITEM_ID, ITEM_NAME, ITEM_COST.
Here is my code:
[Code]....
With this code I get this error: DataBinding: 'ITEM' does not contain a property with the name '2'.
If I remove the assignment of DataSource to c1, the dropdown generates this error: 'DropDownList3' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value
How should I code this so that the user is presented with a list of ITEM_NAMES, and that the ITEM_ID is stored in the value field so I can use it when the selection event is fired? I know I could databind the source directly to the dropdown list, but I am trying to understand the behind the scenes working of a dropdown list object.
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Day
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ToolID
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Stage
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WaferMapTitle
BreakPoint
BreakpointSide
BreakpointMeasurement
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Sep 21, 2010I have a dropdown list with four options like:
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Feb 10, 2011So I have a number of dropdown select list controls populated as part of a repeater. They might contain overlapping data, meaning that the first d d list control will have selections:
a
b
c
Second one:
c
d
e
Third one:
d
e
h
and so on.
So what I would like to do is to srart removing the duplicate items from the reset of drop down controls once the user starts selecting those. I intend to use jQuery for this.
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Jan 7, 2011I have a dropdown list where i wanted to display months in reversed quarterly format based on the current month.
for eg. if this is the month of January 2011.. so the list has to display from the previous quarter onwards....
the dropdown list has to display:-
Oct 2010 - Dec 2010
Jul 2010 - Sep 2010
Apr 2010 - Jun 2010
Jan 2010 - Mar 2010
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Web Forms :: Display In Textbox From Database Using DropDown List
Jul 2, 2010the following content I created a table (Workers) with two columns(username,userid). Now i have Dropdownlist and textbox. Dropdownlist for Userid, Textbox for Username. If i click on the userid in dropdownlist, then the particular username should get displayed on the textbox. For this i have tried codings.
private void DropDownList()
{
OleDbConnection databaseConnection = new OleDbConnection(ConfigurationManager.ConnectionStrings[1].ConnectionString);
databaseConnection.Open();
OleDbDataAdapter dataAdapter = new OleDbDataAdapter("Select userid from workers", databaseConnection);
DataTable dataTable = new DataTable();
dataAdapter.Fill(dataTable);
DropDownListMaterials.DataSource = dataTable;
DropDownListMaterials.DataTextField = "userid";
DropDownListMaterials.DataValueField = "userid";
DropDownListMaterials.DataBind();
}
protected void DropDownListMaterials_SelectedIndexChanged(object sender, EventArgs e)
{
OleDbConnection databaseConnection = new OleDbConnection(ConfigurationManager.ConnectionStrings[1].ConnectionString);
databaseConnection.Open();
OleDbCommand MyCommand = new OleDbCommand("select username from gridview where userid=('" + DropDownListMaterials.SelectedItem + "')", databaseConnection);
TextBoxUsername.Text =
}
private void DropDownList()
Forms Data Controls :: 2 Dropdown List / "Displaying A Dropdown List Of Categories With A --None -- Option?
Oct 10, 2010I am stuck at this point "Displaying a dropdown list of Categories with a --None -- Option. I want the gridview control to display 2 dropdown list one in read-only mode and the other in edit mode. When a record is in read-only mode, the dropdownlist's enabled property will be set to false."When it's on a read-only mode, it doesn't display the selected Category. it shows but the "No Category". When i click on edit to edit or change category, it doesn't display the selected category.
The example is given below( I am reading the book Sams Teach yourself ASP.NET 2.0 by Scott Mitchell. page 628)
<asp:Label ID="UserIdValue" runat="server" Visible="False"></asp:Label>
<asp:SqlDataSource ID="picturesDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT * FROM [Pictures] WHERE ([UserId] = @UserId) ORDER BY [UploadedOn] DESC"
DeleteCommand="DELETE FROM [Pictures] WHERE [PictureID] = @PictureID"
InsertCommand="INSERT INTO [Pictures] ([UserId], [CategoryID], [Title], [Description], [UploadedOn]) VALUES (@UserId, @CategoryID, @Title, @Description, @UploadedOn)"
UpdateCommand="UPDATE [Pictures] SET [UserId] = @UserId, [CategoryID] = @CategoryID, [Title] = @Title, [Description] = @Description, [UploadedOn] = @UploadedOn WHERE [PictureID] = @PictureID">
<DeleteParameters>
<asp:Parameter Name="PictureID" Type="Int32" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="UserId" />
<asp:Parameter Name="CategoryID" Type="Int32" />
<asp:Parameter Name="Title" Type="String" />
<asp:Parameter Name="Description" Type="String" />
<asp:Parameter Name="UploadedOn" Type="DateTime" />
</InsertParameters>
<SelectParameters>
<asp:ControlParameter ControlID="UserIdValue" Name="UserId" PropertyName="Text"/>
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="UserId"/>
<asp:Parameter Name="CategoryID" Type="Int32" />
<asp:Parameter Name="Title" Type="String" />
<asp:Parameter Name="Description" Type="String" />
<asp:Parameter Name="UploadedOn" Type="DateTime" />
<asp:Parameter Name="PictureID" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
<br />
<asp:SqlDataSource ID="categoriesDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [CategoryID], [Name] FROM [Categories] WHERE ([UserId] = @UserId)">
<SelectParameters>
<asp:ControlParameter ControlID="UserIdValue" Name="UserId" PropertyName="Text" />
</SelectParameters>
</asp:SqlDataSource>
<br />
<asp:SqlDataSource ID="maxPictureIDDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SELECT MAX(PictureID)
FROM Pictures
WHERE UserId = @UserId">
<SelectParameters>
<asp:ControlParameter ControlID="UserIdValue" Name="UserId"
PropertyName="Text" />
</SelectParameters>
</asp:SqlDataSource>
<br />
<asp:Label ID="cannotUploadImageMessage" runat="server"
Text="The photo could not be added to your album either because you did not specify a file to upload or the file specified was not a JPEG image with the file extension .JPG"></asp:Label>
<br />
<asp:DetailsView ID="dvPictureInsert" runat="server"
DataSourceID="PicturesDataSource" Height="50px" Width="125px"
AutoGenerateRows="False" CellPadding="4" DataKeyNames="PictureID"
DefaultMode="Insert" ForeColor="#333333" GridLines="None">
<AlternatingRowStyle BackColor="White" />
<CommandRowStyle BackColor="#D1DDF1" Font-Bold="True" />
<EditRowStyle BackColor="#2461BF" />
<FieldHeaderStyle BackColor="#DEE8F5" Font-Bold="True" />
<Fields>
<asp:TemplateField HeaderText="Picture">
<InsertItemTemplate>
<asp:FileUpload ID="imageUpload" runat="server" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server"
ControlToValidate="imageUpload" Display="Dynamic"
ErrorMessage="There was no file selected" ValidationGroup="PictureAdd"></asp:RequiredFieldValidator>
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Category" SortExpression="CategoryID">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("CategoryID") %>'></asp:TextBox>
</EditItemTemplate>
<InsertItemTemplate>
<asp:DropDownList ID="pictureCategory" DataSourceID="categoriesDataSource"
runat="server" DataTextField="Name" DataValueField="CategoryID"
SelectedValue='<%# Bind("CategoryID") %>'
Visible='<%# Bind("CategoryID") %>' AppendDataBoundItems="True">
<asp:ListItem Selected="True" Value="">-- Select Category --</asp:ListItem>
</asp:DropDownList>
</InsertItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("CategoryID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Title" SortExpression="Title">
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Title") %>'></asp:TextBox>
</EditItemTemplate>
<InsertItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Title") %>'></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="TextBox1" Display="Dynamic"
ErrorMessage="you must provide a name for the title"
ValidationGroup="PictureAdd"></asp:RequiredFieldValidator>
</InsertItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("Title") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description" SortExpression="Description">
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Description") %>'></asp:TextBox>
</EditItemTemplate>
<InsertItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Description") %>'
Web Forms :: Dropdown List Display Empty Whenever The Page Loads?
Jun 29, 2010I have a dropdown list that is populated by certain information. However, though, I would like the dropdown to be empty whenever the page loads.
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Jan 18, 2011I try to display the selected value with dropdown list by using label control but cant display it in firefox but works fine in internet explorer.
Below are my code:
[Code]....
Web Forms :: Display Information On Label Based On Dropdown List?
Nov 12, 2010I have a table that has 3 columns, ID NAME DESCRIPTION at the moment, i have a drop down binded to name(bring back a list of names) simple enough!
now i want to put a label next to the drop down so that what ever is selected , it would show a label description next to it...
Forms Data Controls :: Display Two SQL Column Values In One Dropdown List
Apr 16, 2010Is it possible to display two column values from a SQL database in to one DDL? I have been trying to write a SQL query, where in I select two fields to be displayed in the DDL but when I run the application it only displays one. Not sure why. Here is my code below:
<asp:DropDownList ID="DropDownList8" runat="server"
DataTextField="LATA"
DataValueField="LATA"
onselectedindexchanged="DropDownList8_SelectedIndexChanged"
DataSourceID="SqlDataSource1">
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:Inventory_DBConnectionString %>"
SelectCommand="SELECT DISTINCT [LATA], [LATA Name] AS LATA_Name FROM [CA] WHERE ([SWITCH ID] = @SWITCH_ID)">
<SelectParameters>
<asp:QueryStringParameter Name="SWITCH_ID" QueryStringField="ddl1"
Type="String" />
</SelectParameters>
</asp:SqlDataSource>
JQuery :: Reorder List - Change Order Of Divs And Upload New Order To Database
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Jan 8, 2010I am trying to display message box after successfully insertion of comments into database. And before redirecting to another page.
But My application, in every time when button is clicked, displays message box even "textarea" box is empty.
[code]....
