DataSource Controls :: Cascading DropDownList With LINQ?
Sep 8, 2010
My application includes a gridview control with and Edit mode which allows users to do selections using cascading dropdownlist. My code is based on tutorial by Brian Orrell (link below). I am able to statically populate the dropdownlist but in my case I need to populate it dynamically based on a previous selection of a dropdownlist, I would like to do it programatically so I can manipulate data.
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Similar Messages:
Apr 19, 2012
I have 5 dropdown list (sector-country-year-project code-project title) so what i need is when i select specific sector for example education , the rest of the label should show me the only data related to the sector education in dropdown list. the same with other if i select year 2011 should show me in other dropdown list just the data related to year 2011.
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Feb 25, 2010
i have a DAL function to get the records from DB. it will return a dataset. now i want to use linq from dataset and bind the dropdownlist, gridview data comtrols. pls any one give me a sample. also i want to know whether we can use distinct, fileter in linq.
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Apr 5, 2010
I have a partial class extending my Entity Model. I'd like to write a method that returns a collection of types from my entity framework model. For example, I'd like to get all the states to populate a drop down list. So I've written a method called getallstates(), similar to the example below:
[Code]....
I tried returning a list of Objects, and a list of states to my calling method to be used to bind to a drop down list. However I get an error that:
Server Error in Application. Unable to cast object of type 'System.Data.Objects.ObjectQuery to type 'System.Collections.Generic.List`1[System.Object]'.
What should my return type be for this function?
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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 5, 2013
I have 2 dropdownlist in my page
1--ddlTarde
2--ddlTradeClass
and 2 table in database
1-Trade table
ID Tname
1 Industry
2 Cloth
2-Tradeclass
ID Class Tname
1 Electronic Industry
2 Car Industry
3 Scarf Cloth
4 Pants Cloth
I bind ddlTrade from Tradetable and I want when users click on Item from ddlTrade it bind data from ddlTradeclass that TNAME=ddlTrade.selectedItem in ddltradeClass for this I used below code
for binding ddltrade
BindDropDownList(DDLtrade, "tradename", "Name", "id");
protected void BindDropDownList(DropDownList DDL, string spname, string dataTextfield, string dataValuefield) {
SqlCommand _cmd = new SqlCommand(spname, _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
SqlDataReader _dr = _cmd.ExecuteReader();
[Code] ....
NOW my problem is that when I select Item from ddlTrade it didn't show any thing in ddlTradeClass but when I delete this code
DDL.DataValueField=dataValuefield;
from BindDropDownList Metod and change like below:
protected void BindDropDownList(DropDownList DDL, string spname, string dataTextfield)
{
SqlCommand _cmd = new SqlCommand(spname, _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
[Code] ....
It worked correctly I mean when I click Item from ddlTrade in ddlTradeClass show data from TradeClass Table
so here what should I do ? I need DataValueField in ddlbinding ... Why this problem happen?
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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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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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Feb 9, 2011
I have an ASP.NET/C# web project that uses an Entity Data Model and Entity Framework to interact with my database. I also have a DetailsView control that will serve as the control used to insert a new record. The user will need to be able to select from multiple,
cascading dropdownlist controls to determine what parent record this new record will belong to. Here is an example.Say we have an online ordering system with the following hierarchy.
Customers -> Orders -> OrderParts -> Parts
We're going to add a new part to an order, under a customer. Ultimately the orderparts table won't have a reference to a customer, just an order. The order will have the reference to the customer. In the DetailsView for the new orderparts record we will need two cascading dropdownlist controls. One for customer and one for order, since we won't want to view some crazy amount of orders all in one dropdownlist.
However, the customer dropdownlist should not be bound to the detailsview control since there is no field for it. I also don't want to use the AJAX control since I don't want to create a separate web service to provide all of this information to the dropdownlist controls.
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Jun 16, 2015
I have question how can make cascading dropdownlist in gridview edit mode
the first dropdown is for departments and second is for classes
the primary table to be updated is employees table
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Sep 18, 2010
I am making an application that deals with vehicles. I need two DropDownLists:
Makes: All Vehicle Makes
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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Nov 21, 2012
is there any easy way to add city names,state names,and country names in dropdownlist..
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May 7, 2015
I have two dropdownlists inside a repeater. And based on the value I pick in the first dropdownlist the second needs to get populated (both need to be populated from the DB via stored proc). I am adding the code I have so far but it's not complete
<asp:Repeater ID="rpt" runat="server" OnItemDataBound="rpt_ItemDataBound">
<ItemTemplate>
<tr>
[Code].....
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Dec 23, 2013
How do I fill ProductNameID on selection of ProductCategoryID dropdown by passing
ProductCategoryID .SelectedValue...
aspx Code
<asp:GridView ID="gridPosition" runat="server" AutoGenerateColumns="False" ShowFooter="True" OnRowDataBound="gridPosition_onRowDataBound"
DataKeyNames="SaleDetailID" OnRowEditing="gridPosition_RowEditing"
OnRowCancelingEdit="gridPosition_RowCancelingEdit" OnRowUpdating="gridPosition_RowUpdating"
OnRowDeleting="gridPosition_RowDeleting" ShowHeaderWhenEmpty="True" CssClass="manage-admin"
Width="500px" GridLines="None">
[Code] .....
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Sep 20, 2012
Using four dropdown lists (country, state, city, pincode) in one table. i want to select one after other like based upon the country, states has to be displayed and based upon the states, cities has to be displayed and based upon the cities , pincode has to display.
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Apr 27, 2016
Into my application there is EditAds.aspx page where the user get a link on his email after he add an Ad into my application. My inquiry is can i bind the cascading ddl to show the value of State column into Ad/product row as well if the user want to update the rest of state will be also reachable. It maybe hard to get what i am looking for exactly so i make a short screen record ...
Rebinding values of Ad/product depending on AdsID which is a query string in the page called: QADNUM
[URL] ....
if (!IsPostBack)
{
if (cookie["Location"] == null)
{
DataTable rEfilterstathpBizDT = new DataTable();
using (SqlConnection REGGfilterstathpBizCon = new SqlConnection(sc))
[Code] ......
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Mar 12, 2010
I am writing a plugin to help with a current ERP system we have that I am not allowed to modify the data structure at all. The table I am dealing with has over 100 columns and I am wanting to set my linq object propertychanged event and submitchanges or do I really have list out each property and set it equal to the new one?Below is an example of what I am trying to do:
[Code]....
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Mar 9, 2010
txtLastName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Last_Name.ToString();
Like that I have large number of controls on my form. I have dought, if I assigned like this, db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Last_Name.ToString(); to every control, then I have set of controls like,
ddlSalutation.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Salutation.ToString();
txtLastName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Last_Name.ToString();
txtFirstName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).First_Name.ToString();
txtMI.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Middle_Initial.ToString();
txtAddress.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Home_Address.ToString();
txtCity.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).City.ToString();
ddlState.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).State.ToString();
txtZip.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Zip_Code.ToString();
txtSSNo.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ssn.ToString();
txtMRNo.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Mr_No.ToString();
txtDOB.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Birth_Date.ToString();
RBGender.SelectedItem.Value = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Gender.ToString();
RBMaritalStatus.SelectedItem.Value = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Marital_Status.ToString();
txtHomePhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Home_Phone.ToString();
txtWorkPhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).WorkPhone.ToString();
txtCellPhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).CellPhone.ToString();
ddlSuffix.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Suffix.ToString();
txtReligion.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Religion.ToString();
txtEmail.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Email.ToString();
txtSSOName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ssn.ToString();
txtPatientKin.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Patient_Kin.ToString();
txtRelationWithPatient.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Kin_Relation.ToString();
txtPhoneNo.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Kin_Phone.ToString();
ddlPreferredPharmacy.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Id_Pharmacy.ToString();
txtEmergencyContactName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Emergency_Contact_Name.ToString();
txtEmergencyContactNumber.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Emergency_Contact_Phone.ToString();
txtRelation.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Kin_Relation.ToString();
txtRace.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Race.ToString();
ddlHowDidPatientFindUs.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).How_Found.ToString();
txtEmployerName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Employer_Name.ToString();
txtEmployerOccupation.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Employer_Occupation.ToString();
txtEmployerPhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Employer_Cell_Phone.ToString();
txtEmployerAddress.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Employer_Address.ToString();
txtEmployerCity.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Employer_City.ToString();
ddlEmployerState.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Employer_State.ToString();
txtEmployerZip.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Employer_Zip.ToString();
txtRecordsReleasedTo.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Records_Released_To.ToString();
txtOtherInfo.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Other_Info.ToString();
txtPopupNote.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Popup_e.ToString();
ddlPPlanName.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Insurance_Name.ToString();
txtPGroupNo.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Group_No.ToString();
txtPIDNo.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Id_No.ToString();
txtPPhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Plan_Phone.ToString();
txtPVerifiedWith.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Verified_With.ToString();
txtPVerifiedPhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Verified_Phone.ToString();
txtPEffectiveDate.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Effective_Date.ToString();
txtPExtDate.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Ext_Date.ToString();
if (db.usp_ATI_FetchPatientDetails(iPatientID).Count() > 0)
{
txtPGLastName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_Name.ToString();
txtPGFirstName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_Name.ToString();
txtPGMI.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_MI.ToString();
txtPGBirthGDate.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_Dob.ToString();
txtPGAddress.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_Address.ToString();
txtPGCity.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_City.ToString();
ddlPGState.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_State.ToString();
txtPGZip.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_Zip.ToString();
txtPGEmployerFirstName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_Fname.ToString();
txtPGEmployerLastName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_Lname.ToString();
txtPGEmployerPhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_Phone.ToString();
txtPGEmployerOccupation.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_Occupation.ToString();
txtPGEmployerAddress.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_Address.ToString();
txtPGEmployerCity.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_City.ToString();
ddlPGState.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_State.ToString();
txtPGEmployerZip.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Grn_Emp_Zip.ToString();
ddlPGPatientRelationshipToGuarantor.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Grn_Rel_With_Pat.ToString();
txtPGOtherInsuranceNotes.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Other_Notes.ToString();
txtPGAuthorization.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_Authorization.ToString();
txtPGAob.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Ins_AOB.ToString();
}
if (db.usp_ATI_FetchPatientDetails(iPatientID).Count() > 1)
{
txtSGLastName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_Name.ToString();
txtSGFirstName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_Name.ToString();
txtSGMI.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_MI.ToString();
txtSGBirthGDate.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_Dob.ToString();
txtSGAddress.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_Address.ToString();
txtSGCity.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_City.ToString();
ddlSGState.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_State.ToString();
txtSGZip.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_Zip.ToString();
txtSGEmployerFirstName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_Fname.ToString();
txtSGEmployerLastName.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_Lname.ToString();
txtSGEmployerPhone.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_Phone.ToString();
txtSGEmployerOccupation.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_Occupation.ToString();
txtSGEmployerAddress.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_Address.ToString();
txtSGEmployerCity.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_City.ToString();
ddlSGState.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_State.ToString();
txtSGEmployerZip.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Grn_Emp_Zip.ToString();
ddlSGPatientRelationshipToGuarantor.SelectedItem.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Grn_Rel_With_Pat.ToString();
txtSGOtherInsuranceNotes.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Other_Notes.ToString();
txtSGAuthorization.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_Authorization.ToString();
txtSGAob.Text = db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(1).Ins_AOB.ToString();
}
My question is that, for each control the Stored Procedure called or not? If it is yes then it is time consuming and I need to use LINQ to DataSet or LINQ to Object rather than to call SP for each control. What is difference between LINQ to DataSet and LINQ to Object?
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Sep 23, 2010
i tried to change an cascading dropdownlist example
http://www.codedigest.com/Articles/jQuery/224_Building_Cascading_DropDownList_in_ASPNet_Using_jQuery_and_JSON.aspx
But i get always the message "Microsoft JScript runtime error: Object expected"
<asp:Content ID="Content1" ContentPlaceHolderID="contentplaceholderHEAD" runat="Server">
</script src="~/_scripts/jQuery-1.4.2.js" type="text/javascript">
<script language="javascript">[code]...
Can't tag all my code as "Sourceode" because its not working corectly..
<asp:Content ID="Content2" ContentPlaceHolderID="maincontent" runat="Server">
<div> [code]...
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Aug 10, 2010
I have a .aspx page having two dropdowns, the data to be loaded in them is usually static(but may change everyday), the first dropdown always displays the main categories and the second dropdown is initially empty.
Now, the requirement is:
As the user selects a category from the first dropdownlist, the second dropdownlist should populate based on the selection just made.
The road-block:
This should be done without a postback. My boss wants something like the drop downs on this page.
So what I gather is, I'd have to retrieve the data from the database on page load event, store it in the cache(or somewhere else?), then use javascript to handle the selectedindexchanged event of the 1st dropdown, use the data from database stored at pageload and populate the second dropdown according to the selected value of first dropdown.
P.S.- I'm a beginner ASP.Net C# programmer and have no knowledge of Javascript.
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Jun 14, 2010
I seriously want to learn how to create a custom server control, for that I made a requirement for myself, but lost on how to accomplish it.
Requirement -I want to create a cascading dropdownlist control - which should have following properties -1) ConnectionString - used to get data for the 1st dropdown from database, and also it is used by 2nd DropDown to get data.2) 1stSelectCommand - Used by the 1st DropDown to get data from the database.3) 2ndWhereCommand - used by the 2nd DropDown - uses the selected value from the 1st DropDown in the where clause to get data.
Methods - 1) DropDown1_SelectedIndexChanged()2) DropDown2_SelectedIndexChanged(3) CustomCascading_Changed() - this happens when any of the DropDowns index changed.
PS - This is a random requirement, of course it got nothing to do with any project or real time.I want to learn, so i incorporated basic concepts like Data Access, Custom Methods, Properties etc.PPS - I know how to create basic custom server control, so plz dont forward me links to how to create basic custom server controls. But in case with extrordinary links.
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Jul 6, 2010
implementing cascading static dropdownlist in asp.net
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Feb 11, 2011
I am new to ASP.NET MVC 2. In my project, there are two selects: one that contains a list of countries and another that should contain the states/provinces/etc for the country selected in the previous select.
Is there any possibility to create a cascading select without using any client scripting?
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Dec 6, 2010
I am trying to use a solution for a cascading dropdownlist (the selection in one dropdownlist determines the options in the second one) found here:
[URL]
[code]...
how to get a default value for the dropdownlists. Since otherwise the customer dropdownlist will have a value when you first get to the page, but the task list won't...
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