.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Register
 
Win Surprise Gifts!!!
Congratulations!!!


Top 5 Contributors of the Month
Sharon Maxwell
Post New Web Links

cannot have multple items selected in a dropdownlist

Posted By:      Posted Date: October 08, 2010    Points: 0   Category :ASP.Net
 

I have a webpage with two dropdownlists. I am not selecting anything from the dropdownlist and even if i debug code it does not show any error but still its generating the error.

"CAnnot have multiple items selected in Dropdownlist"

Here is my code.Please help me out this is very urgent!

Imports System.Data
Imports System.Data.SqlClient
Imports FESecurity
Partial Class MarketingReports
    Inherits System.Web.UI.Page
    Dim con As New SqlConnection
    Dim sql As String
    Dim cmd As New SqlCommand
       Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
                con.ConnectionString = "server=;database=;uid=;pwd="

        Master.MyStyleSheet = "osx2.css"
        Master.MyTabs.LoadTabItem("MarketingMain.aspx", "", "Marketing")
        Master.MyTabs.LoadTabItem("MarketingAdmin.aspx", "", "Marketing Admin")
        Master.MyTabs.LoadTabItem("MarketingReports.aspx", "", "Marketing Reports")
        Master.MyTabs.LoadTabItem("EngineeringMain.aspx", "", "Engineering")
        Master.MyTabs.LoadTabItem("EngineeringAdmin.aspx", "", "Engineering Admin")
        Master.MyTabs.LoadTabItem("Engineer


View Complete Post


More Related Resource Links

jQuery: Styling DropDownList Alternating Items (Rows)

  
In the following example, I will show how you can style any asp:dropdownlist very easily.

The example demonstrates how you can change alternating row items background color, using the fadeTo() to add a nice touch in the dropdownlist. You can change alt rows with a couple lines.

How to handle Active and inactive items in the dropdownlist?

  

It is a general ASP.NET questions. Many times some items in dropdownlist will become inactive (retired)or active again. It is easy to handle in the new records which use only currently active items. But how to handle the inactive items which need to be used to show history records. It bothered me a long time, not sure how to solve this problem efficiently.

Thanks


how can i display the selected value of dropdownlist from edittemplate to label from itemtemplate?

  

I have a detailsview with a dropdownlist in it. the detailsview is connected to a database table(employees having the following fields: id-smallint,name-nvarchar, departmnet-smallint). the ddl is connected to another table (departments with the following fields: id-smallint, departmentName-nvarchar). the ddl is in the edititemTempalte of the department field. My goal is to display in  the itemtemplate the departmentName (the selected value from the edititemtemplate ). How can I do this? Doyou have any ideas?

thanks a lot


dropdownlist javascript change items

  

I can't find solution for this problem for very long time:

I have dropdownlists in Gridview. I need to dinamicly change content of dropdown on client with javascript. Ok, I know to do that. But the problem is when I send data to server changes in dropdownlist does not see. On server I have  old items. How can I change items in dropdown on client with javascript and than see that items on sever when postback data?


Thanks


dropdownlist bound to sqldatasource adds items instead of replacing on change

  

Hello,

I have a series of dropdownlists on webform in ASP 4.0. The first drop down is filled upon load, and then when a user selects a value from that list, it populates the second dropdown. To accomplish this, I have a SQLdatasource with a parametersource of the first drop-down list control. This works great, except when a user changes their selection from the first drop down. It performs the query, but then adds the list of items to the ones that were already there from the previous selection, instead of replacing it with the new data. Here is the code:


 <asp:DropDownList ID="ddlMajor" runat="server" DataMember="DefaultView" 
      DataSourceID="SqlDataSource1" DataTextField="majortext" 
      DataValueField="majorkey" AppendDataBoundItems="True" AutoPostBack="True">
         <asp:ListItem Value="0">Select Major</asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="ddlReq" runat="server" DataMember="DefaultView" 
      DataSourceID="SqlDataSource2" DataTextField="req" DataValueField="admreqkey" 
            AppendDataBoundItems="True" AutoPostBack="True">
                <asp:ListItem Value="0">Sel

dropdownlist - default value is not 'selected value'

  
i have created a dropdown list that is populated from a sqlserver datasource. i have a separate sql command which uses the dropdownlist.selected value as a parameter and returns the command value to a label.  it mostly works fine but with one problem. when the page loads, the label value is null, because it doesn't seem to treat the dropdownlist default value as a selected value. when i use the dropdownlist to select a value, this is fine and the label begins to display the expected value. is there anyway I can make the default value when the page is loaded act like a manually selected value, so the label control never displays a null value?

External List - Access Selected Items

  
Hello, The situation;- An external list in SP 2010 from SQL A custom ribbon/button that calls via JS a Dialog box(Application page) and passes the selected items IDs Some code behind to process items after confirmation from user. Question is how to access the selected items in the code behind. As far as I can tell the JS 'getselecteditems' only returns the list ID, which in the case of a standard list is fine, but with an External list returns something like '_B00234' - how do I use this or how to return a more meaningfull ID? (I would rather work in my confort zone VB/C# than JS to process items) casey

ASP.Net MVC Dropdownlist and selected value problem

  
I was able to create a dropdownlist for my MVC project, but the value is not selected as  selected value on the dropdownlist. It just shows whole county list from the first.The value is from database. I tried find it from previous post, but it was quite confusing. Please, suggest me for any idea. Controller Code public ActionResult Edit(int i) {      var items = new SelectList(db.MST_COUNTRies.ToList(), "COUNTRY_ID", "COUNTRY_NM");      ViewData["MST_COUNTRies"] = items; } View Code <p>     <%= Html.DropDownList("COUNTRY_ID", (SelectList)ViewData["MST_COUNTRies"])%> </P>I was able to create a dropdownlist for my MVC project, but the value is not selected as  selected value on the dropdownlist. It just shows whole county list from the first.The value is from database. I tried find it from previous post, but it was quite confusing. Please, suggest me for any idea.Controller Codepublic ActionResult Edit(int i){     var items = new SelectList(db.MST_COUNTRies.ToList(), "COUNTRY_ID", "COUNTRY_NM");     ViewData["MST_COUNTRies"] = items;}View Code<p>    <%= Html.DropDownList("COUNTRY_ID", (SelectList)ViewData["MST_COUNTRies"])%></P>

Retaining the selection color(default blue Color) for the selected items in ListView when focus is l

  
I am having a Listview in a form. I have added items(images) to the Listview. When i select the item(Image) in the listview , the item(image) is selected with Default selection Color(Blue). In the same form i have other form added to its container.When i tried to click on the controls of other form, the default selection color(blue) is changing to Grey color. For the lisview i am using property HideSelection = false. How i could maintain the default selection color(blue) even in focus leave of listview? Can any one please suggest me a solution or give me a piece of code. Thanks in Advance, Kumar

Fill a Listbox with value selected from a Dropdownlist

  
Hi, Maybe the question has already be posted, but I didn't find it.I have in my web page two controls: a dropdownlist and a listboxMy goal is to fill the listbox with values from my database depending on what I have selected in my dropdownlist.I wouldlike to use the CascadingDropDown component for that. Is that possible ??(I tried on my own and I get this error messageException Details: System.InvalidCastException: Unable to cast object of type 'System.Web.UI.WebControls.ListBox' to type 'System.Web.UI.WebControls.DropDownList'.I think it's when i tried to fill the listbox with this function:[WebMethod] public CascadingDropDownNameValue[] GetAppliForDomain(string knownCategoryValues, string category) { int domainID; //this stringdictionary contains has table with key value pair of country and countryID StringDictionary kv = CascadingDropDown.ParseKnownCategoryValuesString(knownCategoryValues); if (!kv.ContainsKey("Domain") || !Int32.TryParse(kv["Domain"], out domainID)) { throw new ArgumentException("Couldn't find Domain."); }; SqlConnection con = new SqlConnection(strConnection); SqlCommand cmd = new SqlCommand(); cmd.Connection = con; cmd.CommandType = System.Data.CommandType.Text

How to apply color to selected number of items in check box list and drop downlist

  
Hi all,    I want to apply color to selected number of items in checkbox list and seleted number of items in drop downlist for e.g color red for few items and black (default). I have a bit value set in data base so if bit is set to 0 then red and if 1 then back. Please help me.  

How to get item selected in dropdownlist

  
I'm searching and trying now for the last couple of hours, so I thought the community might help.I'm filtering the rows in a gridview using a ddlDate. Now, I want to request this selected item.But: When I load the page without clicking in the DropDownList, the ddlDate.SelectedValue is empty, and the ddlDate.SelectedItem.Text.ToString() gives a NullReferenceException.Is there any way to fix this without using a listbox?

Fetching DropDownList Selected Value

  
I'm having issues getting the selecteditems and value after Databinding a dropdown list.  I have a button event with dropdownlist2.Selecteditem.text, but will always get the "-- Select --" as the SelectedItem.text ?  Anybody know why this is happening ?   Dim conn As New SqlConnection '("xxxxxx") conn.ConnectionString = ConfigurationManager.ConnectionStrings("PostAdSqlServer").ToString Dim query As String = ("SELECT [CategoryId], [Name] FROM [Category]") Dim cmd As New SqlCommand(query, conn) cmd.Connection.Open() Dim ddlValues As SqlDataReader ddlValues = cmd.ExecuteReader() DropDownList2.DataSource = ddlValues DropDownList2.DataValueField = "CategoryId" DropDownList2.DataTextField = "Name" DropDownList2.DataBind() DropDownList2.Items.Insert(0, "-- Select --") cmd.Connection.Close() cmd.Connection.Dispose()    

dropdownlist selected item problum

  
In gridview we have edit button whenever user click edit button i want to show particular data of dropdownlist as a selected data that is selected by user as a selected text of dropdownlistis there any solution ???

Retaining the selection color(default blue Color) for the selected items in ListView when focus is l

  
I am having a Listview in a form. I have added items(images) to the Listview. When i select the item(Image) in the listview , the item(image) is selected with Default selection Color(Blue). In the same form i have other form added to its container.When i tried to click on the controls of other form, the default selection color(blue) is changing to Grey color. For the lisview i am using property HideSelection = false. How i could maintain the default selection color(blue) even in focus leave of listview? Can any one please suggest me a solution or give me a piece of code. Thanks in Advance, mskumar.mcp

Selected Option from dropdownlist

  
 I need to figure out a way to modify the style property of a div on my page so that when a certain item ("Not shown - please quote") on a few different dropdownlists are selected,  the div style is set to "display: none". The dropdownlist gets generated dynamically and the amount of dropdownlists varys for each product. I've named the class via the cssclass property in the dropdownlist template usercontrol to be "dropDownClass".Here is my code for this page: <div id="ProductControls"> <div id="ProductOptions"> <div id="ctl00_MainContentHolder_VariantsDisplay_VariantsPanel" class="variantsdisplay"> <table> <tr class="dropdownlist"> <td class="choicelabel"><span id="ctl00_MainContentHolder_VariantsDisplay_modifierTemplate1_InputLabel">Color</span></td> <td class="choicefield"><select name="ctl00$MainContentHolder$VariantsDisplay$modifierTemplate1$ModifierList" onchange="javascript:setTimeout('__doPostBack(\'ctl00$MainContentHolder$VariantsDisplay$modifierTemplate1$ModifierList\',\'\')', 0)" id="ctl00_MainContentHolder_VariantsDisplay_modifierTemplate1_ModifierList" clas

How to Capture a DropDownList Selected Index Change Event

  
I have a gridview that receives data based on selection from a primary dropdownlist object. Works. Within the gridview, there is a dropdownlist whose selected index is based on the query from the primary dropdownlist. Works. Problem. How do I force the used to  change whatever value that the dropdownlist contains after they make their initial selection from the primary dropdownlist; except the default value of "Please make a selection". Gridview, contains a checkbox which drives whether a selected row is inserted into the data base. The databind in done using an ObjectDataSource on the presentation page, not in the code behind.   Thank you.   Ayomide 
Categories: 
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend