Should A DropDownList Within A CompositeControl Remember Selected Item
Jul 6, 2010
Given the following
public class MyControl : CompositeControl
{
private DropDownList myList;
protected override void CreateChildControls()
{
base.CreateChildControls();
myList = new DropDownList();
myList.AutoPostBack = true;
this.Controls.Add(myList);
if (!Page.IsPostBack)
{
myList.DataSource = MyBLL.SomeCollectionOfItems;
myList.DataBind();
}
}
}
I find that the items in the list persist properly, but when a different control is rendered and then this one is rendered again, the last selected item is not persisted. (The first item in the list is always selected instead)
Should the last selected item be persisted in ViewState automatically, or am I expecting too much?
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 have a DropDownList in a template column of a GridView control. The GridView is bound to a list of objects. Each object has a property of type int which corresponds to a value in one of the DropDownLists ListItems. I could set the selected item programatically by adding a DataBind event to the drop down, but I'm wondering if there's a way to set the selected item by using a code block in the aspx markup.
I have items in a sql table that i populate a dropdown list with. so on page load the items are sent to dropdown list. I have a button on the page with the dropdown list that onclick it launches another page that allows more items to be added to the database table.
What I want to do is to refresh/update the list of items in the dropdown list when the second page is closed. In addition the last item added to the table will be the selected item in the drop down list.
I am inserting a new states in the table from dropdown list , the dropdown list has new in the list, clicking on new gets me a pop up which takes the new state and inserts in a table. My requirement is I want to get the last inserted state in the dropdownlist and its id to be selected as soon as insertion is done.
The second function is to insert the contact details where i have countryid,stateid,cityid
protected void stateSave(object sender, EventArgs e) { using (SqlConnection conn = new SqlConnection(cs)) { SqlCommand cmd = new SqlCommand("newStates", conn); cmd.CommandType = CommandType.StoredProcedure; SqlParameter outparm = new SqlParameter("@stateID", SqlDbType.Int);
I have a ASP DropDownList that gets populated on the Page_Load event, after i select an item and hit a button the selected item gets cleared and the first item in the DropDownList gets selected. (The DropDownList is only populated when the page is not postback)
if (!IsPostBack) { List<Country> lCountries = new List<Country>(); List<CompanySchedule> lCompanySchedules = new List<CompanySchedule>(); this.Load_Countries(lCountries); [code]...
I have a number of dropdownlists embedded in a gridview. When I submit the page I loop through all the rows of the gridview and use the findcontrol method to get the dropdownlist e.g:
foreach (GridViewRow gvrItem in gvItems.Rows) { DropDownList ddlOption = gvrItem.Cells[2].FindControl("ddlOption") as DropDownList; }
This works nicely, however when I try to get the selected item of the dropdownlist e.g:
ddlOption .SelectedItem.Text
It always returns the first item in the list rather than whats actually selecte din the page.
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:
1- ddlzone1 2- ddldistrict1 and one button (search)
At first I select item from ddlzone1 click on search button according to below SP it search on database and show result...
ALTER procedure [dbo].[GetCustomersPageWise] @PageIndex INT = 1 ,@PageSize INT = 5 ,@RecordCount INT OUTPUT ,@Region nvarchar(10) ,@District nvarchar(20)
[Code] ...
Now I want when users select item from ddlzone1 after that if they select item from ddldistict1 according to their selected item from ddlzone1 and ddldistrict1 it search in table and show result
Now how I can change my SP
I changed below code in SP but it didn't work
WHERE ([HOuse_info].Region = @Region or @Region='0') or ([House_Info] .District=@District or @District='0') SELECT @RecordCount = COUNT(*)
if (!IsPostBack) { DDL1.Items.Insert(0, new ListItem("select city", "0")); DDL2.Items.Insert(0, new ListItem("select region", "0")); DdlDistrict.Items.Insert(0, new ListItem("select district", "0")); }
And in this page I have btnInsert that when users click on it, it insert data in database
I want when users click on button all textboxs text be clear and all DDL selected Item clear so I set below code in btnInsert event
i have dropdown list in my page that bind it from database
BindDropDownList(DDL3, "Guidcenter", "Centername", "ID"); DDL3.Items.Insert(0, new ListItem(" select all", "0"));
here when users don't select any thing from dropdown list in data base insert 'select all' text but i want if users don't select any thing from DDL in database insert NULL.
I have a bunch of dropdowns in a gridview and I populate them through a datasource.On the databound event i need to change the selected item to the actual selected value from db.
I have a MVC dropdown list (Html.DropDownList) with list of Movies populated. I want to retrieve both Title(value field), Description(Text field) when I perform the form Submit. I can access the Title(value field), but I can't access the description. My code sample is below.
when users click on menubar in index.aspx they go to state.aspx in State.aspx is gridview with 6 Dropdownlist that occording to their selected item from DDL they can see result in gridview
now my problem is :
when i click item from menubar in index.aspx when it go to state.aspx it doesn't show any thing in gridview.
i want at first when users go to state.aspx page they can see all data in gridview after that they select item from DDL and see result according to their selected item
i am facing a problem in my code..i have one drop downlist in my page,i store the values in session ,whenever i select the name of the dropdownlist it will redirect to another page,if i select the firstvalue of the dropdownlist,it redirect to another page,and retrive the session value,in that session value i have a case in my page load,if it is firstvalue of the dropdownlist is selected it will call case 1 and executes,if the second value of the dropdownlist is selected,it will call case 2 and it executes ,its not working properly for me..here is my code
dropdownlist.aspx.vb Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged If DropDownList1.SelectedItem.Value = "" Then
