Update Textbox Through Selected Item In Listbox?

Mar 11, 2011

In ASP.NET I have a dropdown with some items in it, I have a button and a textbox. I am subscribed to the SelectedIndexChanged event of the dropdown where I pass the new selected index of the dropdown to a struct that converts it's index (via enum) to a string. That string is then gotten through a property in a class to put into the textbox.

[Code]....

Now the problem I have is that, when you click it (the button) the first time, the action get's updated with the current action selected in the listbox, but then when you click the button again WITHOUT changing anything in the listbox, the textbox shows the zero'th item in the textbox, (seems to reset), although it actually hasn't changed at all.

I'm guessing this might have something to do with the postback caused by the button click, which resets the state of the global or something, but I'm not sure. Why is it being reset while the dropdown box is still as I set it the first time?

View 1 Replies


Similar Messages:

Web Forms :: Display Selected Item Of ListBox In Label Or TextBox

May 7, 2015

i want to display value in textbox when a value is selected in listbox in webapplication vb.net.

Dim con As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersUserDocumentsDatabase4.accdb")
Dim cmd As New OleDbCommand()
cmd.Connection = con
con.Open()
cmd.CommandText = "Select ID,product from List"
' cmd.CommandText = CommandType.Text
Dim da As New OleDbDataAdapter(cmd)

[code]...

View 1 Replies

Forms Data Controls :: Get The Selected Item From The Listbox In The Selected Index Changed Event

Feb 28, 2011

How to get the selected item from the listbox in the selected index changed event. I tried: Label1.Text = ListBox1.SelectedItem.Text; It is giving me object set to null reference.

foreach (ListItem item in ListBox1.Items)
{
if (item.Selected)
{
//lblResults.Text += item.Text + "
";
Label1.Text = item.Text;
}
}

No use, no value coming in to label.

View 5 Replies

Web Forms :: How To Get Listbox Selected Item

Mar 23, 2011

if any body select listbox then

item=item1

if nobody select list box

item=no

how to do it

View 6 Replies

Web Forms :: Listbox Multiselect Last Selected Item?

Aug 3, 2010

regarding this scenario..

I have a listbox, i am binding it to a datatable with DataTextField and DataValueField. This is in WebForm (not windows).And the first item in ListBox is "Select All" and the rest are from DataTable.SelectAll is selected by default.1) If i select any other item...(as it is multiselect) the "select all" item should be unselected.2) If i select 5 items in ListBox and after that i select "Select All" items then all the other items except "Select All" item should be unselected.

View 2 Replies

Make The Listbox Scroll To The Selected Item?

Sep 9, 2010

I have a textbox that searches the listbox below it and selects the text that I types in the textbox. Now although the item is selected in the listbox I have to scroll to the end to see if the item is selected ornot
IS there a way that I can make the list box scroll to the selected item?

View 27 Replies

Check With Jquery That An Item Is Selected Or Not In Listbox?

Jul 21, 2010

how can i check with jquery that an item is selected or not in listbox?

View 2 Replies

Javascript - Scroll To First Selected Item In ListBox

Nov 17, 2010

is there an easy way to scroll an ASP.Net ListBox automatically to the first selected Item? The ListBox has SelectioMode="Multiple".

<asp:ListBox ID="LbSymptomCodesEdit" CausesValidation="true" ValidationGroup="VG_SAVE" Height="100%" Width="100%" runat="server" SelectionMode="Multiple"></asp:ListBox>

The ListBox is in the EditItemTemplate of a FormView inside of an UpdatePanel. jQuery is possible but it would be great if there would be an asp.net serverside(or Ajax) way to achieve this because i don't want to use more client scripts than really needed(and this is only a nice to have).

View 1 Replies

Set Scroll Bar To Selected Item In Multiple Select Listbox

Feb 1, 2010

I have a multiple select Listbox.When I click on it then it post backs and scroll back to the top of the Listbox. Is there any property to prevent it?

View 1 Replies

Web Forms :: Listbox.Selected - Duplicate Item Error

Nov 4, 2010

I have built one of those 2 listbox things where the items in the left textbox can be selected and moved to the right list box. The items in the list can be thought of as tasks (like Raise Invoice, Call Client, Deliver goods etc) The rules of this are that the item you move to the right box remains in the left box. Reason being, you are allowed to add the same item from the left to right as many times as you like. An example what the list on the right might look like is this.

Raise Invoice
Call Client
Deliver Goods
Installation
Call Client
Finalize Deal

Now I have added the feature to select an item on the right and hit the UP button, to move it up in the list. For example I could select 'Deliver Goods' and hit the up button. (the down button works as expected)

Raise Invoice
Deliver Goods
Call Client
Installation
Call Client
Finalize Deal

If i select the 2nd instance of Call Client and hit the up button,

Raise Invoice
Call Client
Deliver Goods
Installation
Call Client
Finalize Deal

This is what happens.

Raise Invoice
Call Client
Deliver Goods
Installation
Call Client
Finalize Deal

My code that loops though and does the move relies on the item.selected property to find which on I have selected. (obviously)

[Code]....

Despite having the items at the bottom of the list selected, the .Selected property is true on the first instance of the item that happens to have the same .Text and .Value.

View 1 Replies

Web Forms :: Displaying Data From Selected Item In Listbox

Oct 13, 2010

I have a asp.net web form in which I display registered customers in a listbox. In the listbox I can choose one customer, and click a "Show data"-button. That should display all registered data about the chosen customer in textboxes next to the listbox. This doesn't work and I haven't been able to find where the error lies. Instead of displaiyng the data in the textboxes the error message in: LabelNoCustomerChosen is displayed. Could it be that the program doesn't find the customer ID? The string that is displayed in the listbox looks like this: ID Lastname, Firstname

[Code]....

View 17 Replies

Using Javascript To Detect When User Has Selected Item In Listbox?

Mar 16, 2010

I am developing an ASP.NET web application that incorporates google maps. I have an ASP.NET listbox on my page which contains a list of items. When the user selects one of the items, I'd like to show this item on the map. The main complication lies in the fact that google maps uses javascript to control it and the listbox is a server control.

I can think of two ways to do this. The first would involve the listbox calling a javascript function when the user selects a new item. I can then write this function to perform the necessary map operations. Unfortunately, the OnSelectedIndexChanged property of the listbox doesn't seem to support javascript functions.

The second involves wrapping an UpdatePanel around the listbox and getting the listbox to perform a postback. In the SelectedIndexChanged event in VB/C#, I would the need to somehow make a call to a javascript function which would then update the map.

View 3 Replies

Web Forms :: How To Change The Selected Listbox Item Back Color

Mar 10, 2011

I want to change the selected listbox item back color. How can I achive this. I tried using ..

protected void lstbxApplications_SelectedIndexChanged(object sender, EventArgse)
{
try
{
lstbxApplications.SelectedItem.Attributes.Add(
"style",
"background-color:Green;
color: Red;"
);
}
catch
(Exception
)
{
throw
;
}
}

But this seems not working.

View 11 Replies

Web Forms :: ListBox Selected Item Costing To Business Object

Nov 7, 2010

I want to cast back my ListBox Item into my Business Object. Following is the code. ListBox Populate Code on Page Load...

if (!Page.IsPostBack)
{
SalesDBEntities ctx = new SalesDBEntities();
this.ListBox1.DataSource = ctx.SalesHistories;
this.ListBox1.DataTextField = "Product";
this.ListBox1.DataValueField = "SaleID";
this.ListBox1.DataBind();
}

And here is

protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
SalesHistory sh = new SalesHistory();
//sh = (SalesHistory)ListBox1.SelectedValue; Error Here. How it is possible
TextBox1.Text = ListBox1.SelectedValue.ToString();
}

View 4 Replies

C# - Changing The SelectedIndex Of Multiple Select Listbox To The Last Selected Item?

Jan 18, 2011

Referring to a C#, .net, System.Web.UI.WebControls.Lisbox which has a multiple select option true and needs to do a postback every time selected index changes.

Problem is, the [SelectedIndex / SelectedItem / SelectedValue] is always on the value of the 1st selected item. Clicking on the second item, third item, does not change the SelectedIndex, causing the listbox to reload and scroll to the highest selected item position.

View 5 Replies

Listbox Control Not Preserving Selected Item On Button Click

Mar 26, 2014

Ok so I have two listboxes on my page one for users and another for cases. For some reason the users listbox preserves state, but the cases listbox doesn't.

They're both set EnableViewState= true

Code:

<asp:ListBox ID="ExistingUsers" runat="server" Width="45%" Height="189px"
CssClass="createdusers" ></asp:ListBox>
<asp:ListBox ID="ExistingCases" runat="server" Width="45%" Height="190px"
></asp:ListBox>

I tried setting them both to autopostback, but that didn't work. The users listbox would preserve the selected item, but make it the first viewable item in the list. The cases listbox still reset the selected item to the first.

My page load:

Code:

'....
If Not Page.IsPostBack Then
''Sort later.
Dim i As Integer = 10
For Each usr As String In AttRoleProvider.GetUsersInRole("Role1")
Me.ExistingUsers.Items.Add(usr)

[Code]......

View 4 Replies

Data Controls :: Remove Focus From ListBox When Item Is Selected

May 7, 2015

In Listbox after select one item in first and how to unselect or remove focus on that listbox.

View 1 Replies

How To Insert A New Item In A Listbox And Then Setfocus On The Listbox New Item On A Button Click Event In C#

Sep 24, 2010

I have a listbox which populated from using a datatable. I have a Add button in my page. On clicking the add button I want to insert a blank row in the listbox. This can be done easily by

ListBox_Admin.Items.Add("");

after this is done I want to select this item as in setfocus on this item.How do I do this.

View 3 Replies

Web Forms :: How To Update More Than One Item Selecting From ListBox

Jan 4, 2011

How can I update the database with more than one item selected from the List Box. What I am currently doing updates only one item

objprp1.plugin_id = Convert.ToInt32(ListBox1.SelectedItem.Value);//passing the value(id) of the plugin thru the listbox property

View 5 Replies

Listbox Selected Items Into Textbox Not Working

Dec 22, 2010

my vb.net will not use listbox1.selecteditems it always comes up with a blue line underneath even though when i search online everyone is using this. my goal is to get the selected items and list them in a textbox

Protected Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim li As ListItem
For Each li In ListBox1.Items
If li.Selected Then
TextBox1.Text &= li.Text & vbCrLf
End If
UpdatePanel2.Update()
Next
End Sub
End Class

View 2 Replies

ADO.NET :: Get Table Values Into Textbox By Using Selected Item

Mar 31, 2011

I have a DropdownList.In this List i have some items like empid.I have four textboxes also.when i select the particular empid in the DropdownList,the remaining row values of the table in the oracle like empname,empbs,empdoj,emploc values should display in the textboxes.

View 2 Replies

MVC :: Add Selected Item From Dropdownlist To A Textbox On The Same Form?

Sep 27, 2010

I have been trying to figure out what the proper method is to be able to have a dropdownlist on the same form that holds a number of textboxes for properties. I am using a strongly typed typed view which was generated by the Visual Studio IDE so it contains textboxes for all of the properties of my strongly typed class. The class has a few properties that can have a set of possilbe answers; I'd like to displat those possible answers in a dropdownlist and then when the user fills in the form and clicks the submit button the selected item would be transferred to the correct property. I have a solution but think there must be a better solution out there and was wondering if anyone might point me in the right direction.So say I have a model with 3 properties, FirstName, LastName. and MaritalStatus.If I generated a view for this then I'd get an aspx file with the following:

[Code]....

[Code]....

[Code]....

[Code]....

[Code]....

[Code]....

[Code]....

[Code]....

View 1 Replies

Web Forms :: Adding Item To Listbox From Another Listbox Taking Way Too Long?

Mar 4, 2010

I have two list boxes, one has a list of available users (about 1500 items) and the other is blank. There is a button to add the seleted items from the first list box to the second one. Both of these listboxes are within an update panel and for some reason it takes over 20 seconds for the items to show up in the second listbox.

Is this normal? Is there an alternate, faster way of doing this?

View 6 Replies

Data Controls :: Display Selected Item In Dropdown And Textbox In GridView

Apr 14, 2012

i am making a web page in which there is a dropdown list and a text box.i want to display the selected item in dropdown and textbox in a Gridview.

View 1 Replies

Getting Data From ListBox / Read The Selected Field From The Listbox?

Mar 14, 2011

how I can read the selected field from the listbox?I have MSAccess table attached to the app.I can get to the properties, but I don't know which property gets me the data of the specific field.In VB it would be "listbox1.Column(x)", where 'x' represents the column number in the listbox1.I am using Microsoft Visual Web Developer 2010 Express

View 2 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved