VS 2008 / Unable To Get Selected-index Of DropDownList?

Jan 26, 2012

I am populating a DropDownList from a text file (class requirement).

The file is read in the Page_Load method and the DropDownList is populated then.

When I press the Submit button, throughout the process of the code it is supposed to get the SelectedIndex and use it to grab a value out of a List(Of ).

The thing is, nothing is ever passed through. I even setup an alert box and it passes right over the alert box and never even triggers it, but gives me an Index out of range error when it moves to the line right after the Alert.

Code:

Redacted to keep people from stealing classwork.

View 6 Replies


Similar Messages:

VS 2008 DropDownList - Selected Index Changed

Jul 12, 2012

I am using SelectedIndexChanged in the DropDowList and it works fine and populates a GridView based upon a site selection.

Is there there a way I can reset the SelectedIndexChanged so if user wants to refresh the GridView they would open the drop down list and click on the same selection again?

View 5 Replies

Should The Selected Index Or Selected Value Be Used To Set A Dropdownlist

Nov 26, 2010

I am binding months to a list 0-13 items default selection is 0 months duration, and years 0-8 items and 0 years is the default selection.As I know there are always going to be 12 months in a year, I could use selectedvalue or selectedindex without any perceived problem. Is there a reason why I should not use either/or of the two properties to select a list item?

View 2 Replies

Dropdownlist Selected Index Changed Using C#?

Oct 12, 2010

i have 2 drop down list..first for city and second for state i want to fill the state list when the city is selected...m using the code

protected void Ddl_SelectedIndexChanged(object sender, EventArgs e)
{
String sqlQuery="select SM.StateId,StateName From StateMast SM,CityMast CM where CM.StateId=SM.StateId AND CM.CItyId='"+ Convert.ToInt16(DdlCity.SelectedValue.ToString())+"'";
DdlState.DataSource = cls.Select(sqlQuery);
DdlState.DataTextField = "StateName";
DdlState.DataValueField = "StateId";
}

but nothing is happing on selecting city..i have set the autopostback of city=true..select is a function which is returning data tablepublic DataTable Select(String sqlQuery)
{
con.Open();
SqlDataAdapter adapter = new SqlDataAdapter(sqlQuery,con);
DataTable table = new DataTable();
adapter.Fill(table);
con.Close();
return table;
}

View 2 Replies

Data Controls :: Could Not Find Selected Index In DropdownList

Apr 28, 2014

<br />
<table align="center">
<tr>
<td>
<fieldset>
<legend>

[code]...

For Edit I want to select the OfficeName before Selecting a Department or any another way to do this

View 1 Replies

Forms Data Controls :: Setting The Selected Index / Value In A DropDownList?

Feb 8, 2011

I have a problem in setting the selected index /value in a drop down list. The list is bound by a Linq query and I want to add an item at the top of the list and set it as the selected item.

THis is the code i am using

ListItem li = new ListItem("Select", "", true);
list.DataSource = (from ap in edc.Approvers
where ! ap.approverEmail.Equals("")
orderby ap.approverEmail
select new {ap.approverEmail}).Distinct();
list.DataTextField = "approverEmail";
list.DataValueField = "approverEmail";
list.DataBind();
list.Items.Add(li);
list.Items.FindByText("Select").Selected = true;

The listItem li is the item i want to be first in the list and also selected. Adding this before the databind just loses the item.

View 2 Replies

Web Forms :: Preserve DropDownList Selected Index In User Control?

Dec 4, 2010

I have a user control that has some drop down lists. These DDLs are used by the user to filter their product search on my search page. A button is used to post the form and get the results of the product search. Those results are displayed on the results page, which also has the search filter user control on it. I'd like the results page to have the values of the DDLs be preserved from the search page. Example: user selected color of red and size of large on the search page. When the results page is displayed, I'd like the selected color to be red for the color DDL and the size to be large for the size DDL. How can I do this?

View 9 Replies

Forms Data Controls :: How To Make Dropdownlist Box To Selected Index To 0

Sep 13, 2010

I have a dropdownlist1 control in footer template, but when i go to edit command for editing an existing row. at that time. the footer dropdownlist box showing exact index which is selected in edit template dropdownlist box.

dropdownlist1 is in footer template and dropdownlist2 is in edit item template.

same datagrtid i am using for adding new rows via footer template and editing existing rows via edititem template.

how to make dropdownlist1 which is in footer template to selectedindex "0", when i go to editcommand. tried using itemdatabound but not working.

View 4 Replies

Web Forms :: Selected Index Change Event On Dropdownlist In Gridview

Aug 30, 2012

How to select next row of grid view on selected index change event on dropdownlist in gridview...

View 1 Replies

Web Forms :: Populate DropDownList On Selected Index Changed Event Of Other

Feb 23, 2013

there is 3 drop down list control in in first dropdown load Districts when page load when we select or index changed in drop down1 items changed or loaded in drop down list2 according to the disrict.According to the item selected in drop downlist2 items changed or loaded in drop downlist3.

View 1 Replies

Web Forms :: Prevent The Firing Of Index Changed Event In A Dropdownlist When 'NO' Is Selected?

Mar 20, 2011

I have a simple query based on the index changed event of a dropdownlist in ASP.NET. The scenario is i have a dropdown list bearing a collection of items (say ONE, TWO, THREE, FOUR, FIVE) with the default value selected as 'ONE'. Now, when the client changes the index (say the client selects 'TWO'), a confirmation box is prompted asking 'Are you sure want to change the index?' with the buttons YES & NO. Now, the problem is, if YES button is clicked then its working fine as the index is changed. But when NO button is clicked in the confirmation box, I do not want the index to be changed to 'TWO' and it should be holding the previously selected value which was 'ONE'. How can I do this? For which event should I write the code, as I cant think of writing the code for the IndexChanged event because here the index change has already occured and since there is no 'IndexChanging' event in ASP.NET, where shall i write the code

View 7 Replies

Data Controls :: Get Selected Index Of Dropdownlist Inside Gridview Using JavaScript

May 7, 2015

In ASP.NET, I can get the selected index of dropdownlist using:

var dropdown1 = document.getElementById('dropdown1');But I want the selected index of that dropdownlist, which is present INSIDE a GridView.How to get that using JavaScript?

View 1 Replies

Data Controls :: Replace DropDownList Text With Value On Selected Index Changed

Jan 5, 2014

I want to create a drop down list, where user can view the code name and the name the code when they click on the drop down list.

But after they choose, only the code is appeared. This is my current coding as for now. 

<asp:DropDownList ID="ddlcodetype" runat="server">
<asp:ListItem Selected="True">-</asp:ListItem>
<asp:ListItem>DK Deck</asp:ListItem>
<asp:ListItem>EG Engine</asp:ListItem>
<asp:ListItem>CT Catering</asp:ListItem>
<asp:ListItem>OT Others</asp:ListItem>
</asp:DropDownList>

With this, both my name and the code name are appeared. 

View 1 Replies

Forms Data Controls :: How To Capture A DropDownList Selected Index Change Event

Sep 15, 2010

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 "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.

View 11 Replies

Data Controls :: Update Row Cell Values In GridView On DropDownList Selected Index Changed

Jul 17, 2015

How do i change the name column text the current row when the selected index of drop down is changed? ex:first row is mudassar khan and belgium, when i change belgium i want mudassar to be replaced to a name which i fetch from database....

View 1 Replies

Web Forms :: Populate Columns In DropDownList And Filter GridView Data On Selected Index Changed

Jul 2, 2012

I want to filter grid view, drop down list should select the column and text box will filter the column. like ID NAME Phone Designation fields in gridview.i will select Designation in dropdown and type programmer in text box .so it should filter programmers from the gridview...

View 1 Replies

VS 2008 Put Selected Value In DropDownList?

Aug 29, 2010

Is it right way to get the selected values in DropDownList

Code:
cmbType.SelectedValue = reader.Item("HeadName")
or Please suggest the right way

I m getting the below error on this line

'cmbType' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value

View 9 Replies

Web Forms :: Unable To Have Multiple Items Selected In A DropDownList?

May 31, 2010

I have just started with this . I am a new user and i want to know that why we cannot have multiple items selected in a DropDownList?

View 4 Replies

VS 2008 - Unable To Get DropdownList Value From Inside GridView

Apr 10, 2013

I need to loop through a gridview and get the values of some dropdownlist controls at that time.I am binding the gridview from a datatable I created.

Code:
gvFields.DataSource = myDataTable
gvFields.DataBind()

Now I am going through the rows of the gridview manually and need to get the values. You can see I have tried different ways. How can I do this from clicking a button to get the values instead of any other event? I only get True or False returned instead of the text in the dropdownlist controls.

Code:
For X = 0 To gvFields.Rows.Count - 1
Dim chkBox As CheckBox = CType(gvFields.Rows(X).Cells(0).Controls(1), CheckBox)
If chkBox.Checked = True Then
Dim ColumnName2 As String = Trim(gvFields.Rows(X).Cells(1).Text)

[code]....

View 1 Replies

AJAX :: Unable To Get Selected Value Of DropDownList Populated Using JQuery On Server Side

May 7, 2015

We bind dropdown using json and web service but when we click on save button we can not get selected value of that dropdown...

View 1 Replies

AJAX :: To Get The Selected Index,selected Value , Selected Text Using Javascript Of Combobox Control

Feb 17, 2010

Can i get the selected index,selected value , selected text using javascript of ajax combobox control. if yes send me the sample code.

View 7 Replies

Forms Data Controls :: Unable To Get Multiple Items Selected In A DropDownList Exception?

Jul 21, 2010

I am trying to hide 2 buttons depending on the value in the dropdownlist. It works when the page is initially loaded but chokes when returning to the page sometimes. I have some pretty simple code in the Page_Load event within an If Not Page.IsPostBack statement

[Code]....
[Code]....

View 2 Replies

Data Controls :: Filter Repeater Control Data On DropDownList Selected Index Changed

May 7, 2015

i need to Filter and display Google Map Markers from database based on DropDownList selection. for that I need to pass the selected value of DropDownList to the query.What should i do in the following code to do the above task?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;

[code]...

View 1 Replies

Data Controls :: How To Fetch Data On Selected Index Of Dropdownlist

Apr 27, 2016

how can i fetch the data from different tables stored in database on the value selected of dropdownlist..for ex.

DropDownlist1.selectedValue=="HEG01"

then the data from that table will be fatched from the databse and entries are displayed in gridview.

DropDownlist1.selectedValue=="RES01"

then the data from that table will be fatched from the databse and entries are displayed in gridview.

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







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