C# - Retrieving Selected Item Text Within A JsonResult Function
Mar 3, 2011
I am creating an MVC project with a table using the JQGrid plugin. I would like to use a DropDownList to allow the user to specify a value, that will be used in an SQL query to retrieve specific data from the table. I.e. user can select a country from the list, and the table will display items only from that country. I cannot figure out how to retrieve the selected item from the DropDownList, within my data bind function for my table, within my controller class.
DropDownList in the View
<%= Html.DropDownList("Countries")%>
Setting up the DropdownList in my controller
//dt is a DataTable which holds the values for my list
List<SelectListItem> countries = new List<SelectListItem>();
for (int i = 0; i < dt.Rows.Count; i++)
[code]....
The problem seems to be that within a JsonResult function I don't have access to the ViewData or my ViewModel, which always seem to be null when I try and access them. I am very new to MVC and web development,
I have a .net 3.5 web form with an ajax combo box and a text box inside it. The bombo box is bound to a SqlDataSource.
My requirement is to show/hide the text box depending on the text of the selected item in the combo box. If a particular string, say 'xyz', appears in the text of the selected item, the I will make the text box invisible. I enabled the AutoPostback, made the text box disappear in the SelectedIndexChanged event, and everything worked fine.
However, when users enter their own texts (which are not in the list items), I am unable to show / hide the text box. I've tried the TextChanged event but nothing happens. It seems the event is not trigger after I enter a new text and locate the focus to other place.
is there a way to prevent the user ented text from being inserted into the bombo box?
I have one label and one dropdownlist which contain "red" and "blue". When I select "red" from dropdownlist, the label will display "You select RED" and if I select "blue", it will display "You select BLUE". The text is display immediatelly after selected without using BUTTON.
I have try to put the codes in Page_Load but not functioning, below is my code:
[Code]....
Can anyone guide me how to do this and I'm using C#?
i have a select element with few items and the script.
[Code]....
on selection of any item from the dropdownlist how can i get the text selected from dropdown in the javaScript function that i have provided in onchange event handler ?
I am using frames in my webpage.in one of the frames i have a menu control whose items are database driven.when click on the menu item, i want another page to be displayed in other frame. now i want to pass the the selected menu item text to the other page using session variable which is in the menu item click event method.but the thing is when i click on the menu item, the click event is not firing. is there any better way to pass the selected menu item text to the other page?
My requirement is, i have a checkedlistbox, and i want the selected item should be inserted into the gridview using javascript, in grid i want only two columns i.e. selected item text and another is checkbox.
Is there a way to programmatically select the entire string of the selected item in the AJAX Combobox?What I'm trying to do is bascially on a State/City selection.
1. User selects a State from the first combobox. This triggers the City combobox to be populated. The item(0) is "Select One:".
2. I want the entire "Select One:" to be hightlight as if the user had used their mouse and highlighted all the text.
The reason for this that I'd like the user to be able to start typing the city without needing to clear out the "Select One:" manually.
I am using frames in my webpage.in one of the frames i have a menu control whose items are database driven.when click on the menu item, i want another page to be displayed in other frame.
now i want to pass the the selected menu item text to the other page using session variable which is in the menu item click event method.but the thing is when i click on the menu item, the click event is not firing.
is there any better way to pass the selected menu item text to the other page?
I have a list with 2 sorts of items. Items that have actual values (1,2,3,4 etc) and items that are like group headings so all their values are set to 0. If someone decides to select a group heading - which has a value of 0, is it possible to redirect them to my 'Select an item' item which has a value of ""?
If worse comes to worse, I can just reconstruct the entire list, although if possible I'd like to avoid it.
I have a project that queries a set of times from a database and uses these entries to populate a dropdownlist. Once the page is loaded, the user can select one of the items in the DropDownList. When the "Save" button is clicked, the Selected item value is returned to the [HttpPost] version of the controller action. This item is then stored into session. If the system returns to the page containing the dropdown, I want the saved Value to be selected in the DropDownList. What actually happens is that the DropDownList is always set to be the first item in the list.
Database Table: This data has been imported using Link to SQL
Here when i click on button it insert all data into table but it didn't insert my selected item from dropdownlist it insert select city that i define in page_load
DDL1.Items.Insert(0, new ListItem("select city", "0"));
And when i delete this code from page load it insert in table first row of my table it didn't insert my selected item from dropdown list.
I am trying to get a drop down and a form view to work together. I've never used form views before. I also am using the entity framework to do everything. This is also my first time with it.
I want to be able to have a drop down, that is populate from the same data source as the form view. So far that works fine.
I then want to be able to change the drop down item, and it change the form view item that is displayed. I cannot figure out how to make this work.
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; } }
I have a drop down list control populated with items and some code to take the currently selected item value. The problem is I only get the value of the first item in the list regardless of what item is actually selected. Here is my code to populate the drop down:
protected void displayCreateCategories() { StoreDataContext db = new StoreDataContext(); var a = from c in db.Categories orderby c.Name select new{catName= c.Name, catId=c.CategoryID}; ddlCategory.DataSource = a; ddlCategory.DataTextField = "catName"; ddlCategory.DataValueField = "catId"; ddlCategory.DataBind(); }
To get the value of the currently selected item which in my case is always of type integer I do label1.text=Convert.toInt32(ddlCategory.SelectedValue); I get the selected value, but it is always for the 1st item in the list. I'm pulling my hair out over this.
is it possible to retrieve by using connection.getschema() the description item from a sql server table column, just like it's possible to retrieve the column name, data type, is nullable, column default value, etc? if so, how?
I ran into a road block and hope someone has the quick answer. Searched the forum found several solutions but none worked for me.
Here's the issue:
Got a listbox set with Multiple selection. I want to get all the Selected values of that list box to use those values to later display into an email. Tried several ways but no luck and just got frustrated.
i have a checklistbox that is databound during Page_Init in an
If (!Page.IsPostBack)
block. the user can then check off certain values, and click an asp.net button which posts back the form and renders a crystal report on the same page.
i need to be able to determine which items were checked in the control so that they can be used as parameters in the crystal report. rendering must be done during Page_Init.
the checklistbox object is on the page during design time; only the items are dynamic.
i tried using the Request.Form object during Page_Init to obtain the checkboxlist's items but either i didn't code it correctly or it can't be done that way...
can the checkboxlist items' values be obtained during Page_Init, and if so, how?
I have an unbound dropdownlist that is populated in my page_load event. I want to retrieve the text of the selection from the dropdownlist. I'm
using dropdownlist.selectedvalue.tostring(), which works on original page_load but not when I make another selection, even though autopostback is set to true. Do i have to write something in the selectedindexchanged event when not databinding?
I have a button on the page and a gridview with checkboxes on the first column. The gridview is bound to a List. On buttonClick, I need to retrieve the underlying bound data item (MyEntity) for each selected row. How can I do this? I can't simply recreate MyEntity based on the gridview columns, because I am not displaying all the fields of MyEntity. I need a way to get a hold of MyEntity based on the key (MyEntityId).
