Web Forms :: Cascading Dropdownlist Always Append The Values From Previous Selection?
Sep 3, 2010
I have 3 cascading dropdownlists. Everything works OK EXCEPT whenever I change the selection in the dropdownlist, the old values from the previous selection are added to the new values (specifically DropDownList id=InstructorList and CourseNumberList)
ASPX page,
<asp:AccessDataSource id="CourseNameSource" Runat="Server" DataFile="r:angel_file_storageCourses.mdb" SelectCommand="SELECT DISTINCT CourseField FROM (SELECT Mid(CourseField, 1, 4) AS CourseField FROM Course_Load) ORDER BY CourseField"/>
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Aug 12, 2012
i have 3 drop down list in my page
1-ddlzone1
2-ddldistrict1
3-ddlstore1
this is ddlzone1 code
protected void DDLzone1_SelectedIndexChanged(object sender, EventArgs e) {
DDLstore1.Items.Clear();
DDLstore1.Items.Add(new ListItem("select center", ""));
DDLstore1.AppendDataBoundItems = true;
SqlCommand _cmd = new SqlCommand("selectcenter", _cn);
[CODE].....
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Jan 8, 2013
I am having two dropdownlist in my project,one dropdownlist for empid, another dropdownlist for month, if the user select the empid, the values are retrieved in the textbox.
In the second dropdownlist, if the user select the month in the dropdownlist it will display the leave details, its all working fine, if the user again select the first dropdownlist that means empid, I want to show the second dropdownlist as select month, how can do this.....
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Jan 17, 2011
my c# web application populating dropdowns with datas at run time... i.e my web form contains 3 dropdowns and one gridview.. dropdown1 populate with 'pgmtitle' which is fetch from database,when user select one item-pgmtitle from dropdown1,participants(BadgeNo,Name)
of that pgm will be populated in gridview. when user click on the participant badgeno,dropdownlist3 will poputated with recieving officers name.. wen user select one of the recieving officer from dropdown3,his designation is dispalyed in a textbox,and dropdon2
will populated with feedback sentdate... this is my requirement... and my pblm is, when i choose another pgmtilte(say pgmtilte2) from dropdownlist1,previous value associated with(pgmtilte1) appended with dropdown2 and dropdown3.. here is my HTML code:-
[Code]....
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Jun 10, 2010
I'm wanting to maintain the dropdownlist values that were selected when i use postbackurl with a button. They cascading dropdowns are on a masterpage in an accordion pane. I select the 3 vales in the ddl and then presss a button which redirects to the new content page.
I've been able to get the values using previousPage.master.fincontrol... but am then setting the selectedValue in the page_init of the conent page, but they aren't set when the page loads... does anyone know where to put the code to set the values?
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Feb 17, 2011
I have EntityDataSource for DetailsView which is in Edit mode by default (showin Update, Cancel link buttons).
This datasource also has foreign key called PecID. If I change the value in textbox bound to PecID, it works fine.
Entering IDs is not very user friendly, so I add dropdownlist and new datasource.
When I select new value from dropDownList and press update the DropDownList's selection is restored to original (previous) value.
Other values in textboxes are saved as expected.
After few hours of trying to figure out what is going on, I got lucky. I figure out that it is important the order of TextBox and DropDownList in field template.
This is the working order (textbox before DropDownList)
[Code]....
This one doesn't work [Code]....
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Jun 3, 2010
I have two ListBox in my ascx file, I fill them with some data (no problem here), I make them multiple and increase the size, below is my code.
[Code]....
I use some jQuery code to exchange element between them (Here too, no problem). My problem begin when I post my form, I'm unable to get the data from the DropDownList with attribute multiple or size. I tried in my controler to add a FormCollection parameter, I can see every element in my form except those select tag with more options than id and name. I tested to put a manual select tag in my code with only an id and a name then add size and multiple attribute, when there is only id and name I can get the value but when there are more I can't get my select tag in the FormCollection
Also I need to get all the value in the ListBoxand not only the ones who were selected. I have been searching answer for 2 fays now... Without success, I only find resource on how to show ListBoxbut not how to get values from them in mvc web site and I don't find any resources who talk about multiple selection ListBox, I think I'm a bad searcher but....
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Mar 24, 2011
I am using Jquery and Ajax to add new record into the database. After successfully insert the record, I want the listview I have to automatically append the previous added record.
The record can be added successfuly into the database and the only problem is I want them to be display in my listview after I click submit button. So is there any solution for this?
Below is my code:
[Code]....
[Code]....
[Code]....
[Code]....
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Apr 18, 2010
I have a parameter page which contains a hyperlink. This hyperlink opens a new window when clicked. I am passing the value of the selection made in the listbox in the new window to the previous page via session. Now, once, i again click the hyperlink in that session, i want to show the previous selection made on that hyperlink page.
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Mar 23, 2010
I have a datareader "gDatareader", it has 6 rows for field "orderno", is it possible to add all 6 rows info to a dropdownlist box ddlOrders using something like this:
Dim anItem As New ListItem
anItem.Value = s
anItem.Text = s1
anItem.Selected = False
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Mar 25, 2010
is there a way to cancel the current selection for a cascadingdropdown list ? For example, user changes selection, I present user with option to cancel selection and if he chooses to cancel, then the old value should be reverted.
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Feb 13, 2011
<select id="example" name="example" multiple="multiple">
</select>
[Code]....
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Oct 6, 2010
I have 2 dropdownlists, the second (department) cascades from the first (division). I use a jquery script to update the second drop down list. When the user clicks submit, the underlying model is updated, apart from the new value for department. 2 ideas I have for fixing this are; a) Generate a postback. Prefer not to do this because of bad user experience. b) With a JQuery change event, make a call to server side and set a ViewData variable that I can use to update the field in the model later.
However there must be a better way. This is the view;
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/AdminAccounts.master"
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Dec 29, 2010
I have 2 dropdownlist, one is to dropdown department, and another dropdown staffnames. the secong dropdownlist will based on the selection of department as each department has different staffs i have 2 tables department and staff in my database , in my department table i have departmentid as PK and departmentname, in my staff table i have staffname and departmentid as FK. So my ques is how am i going to populate staffname in the dropdownlist according to the selection of department.
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Jan 19, 2010
I have one table which contains branch codes(primary key), Branch name and bank name columns. I have 3 dropdownlist boxes. the first dropdownlist is for the branch codes. When i select the a branch code i need the second dropdownlist box to populate with the appropriate branch name and the third dropdownlist box to populate the bank name at the same time.
Is it possible to have one table like mine and acheive this, if so how do i go about doing this?
I did read up on this but only came across ones with 3 tables.
I am using Visual Basic to do this.
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Sep 18, 2010
I am making an application that deals with vehicles. I need two DropDownLists:
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Models: Models that belong to the selected value of the Make DropDownList
How is this done in MVC2? My Idea: Do I use an ajax call when my first list is selected and then pull back the Models to bind to the Model DDL? How would model binding come into play that way? UPDATE I posted what I ended up doing as an answer. It is super simple and works great. You can use a get too if you feel so inclined, but you have to specify that you want to like so... return Json(citiesList, JsonRequestBehavior.AllowGet);
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Dec 1, 2010
I am currently building a web site and I utilize cascading drop down lists. I am having difficulty clearing two of my drop downs. The application is utilizing Visual Basis. Here is what I found through my research but they are not resetting my drop downs after a post back:
cascadingDropDown1.SelectedValue = Nothing
cascadingDropDown1.SelectedValue = ""
I am stumped on this on and have spent several hours researching this. If anyone has a possible solution I would be greatful.
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May 21, 2010
i am creating a grid page for a first time.
I looked on some tuitorials also but i still have few confusions.
I have a few parameters on page A. After the selection of those parameters, i should pass to the new page which should have a list of fleet items. There will be few columns and at the right most, i want a tickbox whether to select that item or not.
As a default, i want each checkbox be checked but if user wants to uncheck it, they should be able to do it.
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Mar 25, 2010
i have a table with three columns as ID,baseid,name.
[code]...
i will display all baseid 0 values in first dropdownlist1
based on the selection corresponding values will be shown in dropdownlist2 (like when desc1 is selected desc1212 &desc2323 will be shown in dropdownlist2. now i want to edit/add details to the table from aspx page.
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Jun 5, 2010
let me know if some body tried to use a cascading dropdownlist inside a formview to be used in update and insert templates.known that my tables are like this:
Section:
SecID SecTitle
Category: [code]...
I need to create a formview to insert and update all my news but I need a cascading Dropdownlist to select a section and generate the related categories Note that I need to display the Sectoin and the Category Titles
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May 10, 2012
I have two comboboxes say DDL 1 : Artist , DDL 2: Albums and a Gridview containing ( album name, artist name, no.of tracks, year, etc), What I want to achieve is: when an option(artist1) in DDL1 is chosed, then the albums related to DDL1 needs to display in DDL 2 and also it must update the appropriate values in the gridview( artistname, albums(album name -no of songs, year)etc...(language: Asp.net(VB)-Sql server ).
I looked at your article regarding cascading dropdownlists and was really useful but in my case I want to use two drop down lists and a grid view.
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May 7, 2015
Append Query String Parameter Values in Current URL.
I have added Hyperlink in data list.which is Bind with their Respective data.When I Click that Hyperlink it Will Pass Url like this.
Area_id,Cuisine_Id and Veg_Id Bind in Datalist
[URL]
I want to Built a Filter Page Which Includes Area_id, Cuisine_Id and Veg_Idso when i Click to Hyperlink of Area then url like this. [URL] And then After i click to hyperlink of Cuisine then URL Like this.
[URL]
Similar Way
[URL]
So Basically I want Filter Data With Clickable query Strings Parameter Values
Problem : How can i Make Url Like this and it is Dynamic
[URL]
I want to Do Something like this SitePage Filter
[URL]
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Sep 2, 2012
i have 2 DDL in my page that when users select item from ddldistric1 item in ddlcity1 will change these are my code
protected void DDLcity1_SelectedIndexChanged(object sender, EventArgs e)
{
BindDistrictC();
}
private void BindDistrictC()
[code]...
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Mar 16, 2011
I have 2 dropdownlists and on change 1st dropdownlist (ddlPlant), the 2nd dropdownlist (ddlCategoryName) refreshes its data based on 1st dropdownlist value. However, the codes does not worked.
My codes:
[Code]....
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Mar 2, 2010
I have created two dropdown lists. The 2nd DDL depends for values on the 1st DDL. I have written code on the SelectedIndexChanged event of 1st DDL to change values of 2nd DDL. also i have used detailsview. In the template field i have used 2 DDL mentioned above. they are having SelectedValue='<%# Bind("") %>' property. Everything works fine but when i tried to edit record in detailsview & select value from 1st DDL then it gives me following error.
Server Error in '/' Application. Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
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