Cascading dropdown list

Sreenish

11y2.5k.NET

Am new to asp.net wanna know cascading dropdown list with example

31 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sreenish11y ago
Already i posted my Code.What i have tried.
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Rajeesh Menoth11y ago
Hi,

Try this also : http://www.codeproject.com/Articles/67156/Creating-a-chained-dropdownlist-using-AJAX-and-XML
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Sreenish11y ago
Source Code:

Code Behind: using System; using System.Collections.Generic; using System.Linq; using System.Web.UI; using System.Web.UI.WebControls; using AjaxControlToolkit; using System.Web.Services.Protocols; namespace Mystuff.Ajax { public partial class Cascadingdd : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } [System.Web.Script.Services.ScriptMethod()] [System.Web.Services.WebMethod] public CascadingDropDownNameValue[] GetVendors(string knownCategoryValues, string category) { List l = new List(); l.Add(new CascadingDropDownNameValue("International", "1")); l.Add(new CascadingDropDownNameValue("Electronic Bike Repairs & Supplies", "2")); l.Add(new CascadingDropDownNameValue("Premier Sport, Inc.", "3")); return l.ToArray(); } } } Am getting error Like "Method Error "
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Sreenish11y ago
I have gone through this earlier.i want C# code for this.Any of u help me.
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Rajeesh Menoth11y ago
Check this : http://www.ajaxcontroltoolkit.com/CascadingDropDown/CascadingDropDown.aspx
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Sreenish11y ago
So without database we cannot use cascading dropdown extender??
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Rajeesh Menoth11y ago
Hi Nilesh Jadav,
Without data base i mean,u can store the value in to xml file.

Check this : http://www.dotnetfunda.com/forums/show/7797/how-to-connect-xml-file-to-aspnet-dropdown-list-cascading
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Nilesh Jadav11y ago
is it possible rajeesh to make such thing ?? without database and in c# , I think not !
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Sreenish11y ago
By using Ajax extender
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Sreenish11y ago
Yes
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Rajeesh Menoth11y ago
So u can populate the data without using database,u want to use only c# code..
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Sreenish11y ago
Am new to asp.net that's why little bit confused
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Sreenish11y ago
Dude All provided Links are using database.But i want by c# code.
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Nilesh Jadav11y ago
Hey buddy

Kindly describe your full and proper question, and besides this all the links that is mentioned in this forum are related to cascading dropdown list only , you just check out once and even if you get some problem than just drop the question here, Trust me these links are really helpful just go through once.

Thank you
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Rajeesh Menoth11y ago
Hi,

Check this : http://csharp-video-tutorials.blogspot.in/2012/11/cascading-dropdown-in-aspnet-part-22.html
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Sreenish11y ago
is this cascading dropdown List is possible by using cascading dropdown extender??
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Sreenish11y ago
Am new to asp.net .Kindly give me some sample.
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Vincent Maverick Durano11y ago
I thought you need client-side implementation? C# is a server-side code. If you want to use C# then you need use DropDownList SelectedIndexChanged event to populate the other dropdownlist based from the selected value of the first dropdownlist. Just make sure to set AutoPostback to True to trigger the event.
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Sreenish11y ago
Hi Dude Is that Possible in C#.. And not getting o/p.
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Vincent Maverick Durano11y ago
Here's a quick example of cascading dropdownlist using Client-Side JavaScript and without database:
JAVASCRIPT:
HTML:

Please specify language:




Please select framework:




Please select Letter:



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Nilesh Jadav11y ago

For resolving 403 error ,


http://stackoverflow.com/questions/5649852/asp-net-web-service-i-would-like-to-return-error-403-forbidden

Sreenish11y ago
without database i want . I tried Myself.

Source Code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Cascadingdd.aspx.cs" Inherits="Mystuff.Ajax.Cascadingdd" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>

ServicePath="Cascadingdd.aspx.cs" ServiceMethod="GetVendors"
TargetControlID="VendorsList" Category="Vendor" />

Code Behind:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.UI;
using System.Web.UI.WebControls;
using AjaxControlToolkit;
using System.Web.Services.Protocols;
namespace Mystuff.Ajax
{
public partial class Cascadingdd : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
[System.Web.Script.Services.ScriptMethod()]
[System.Web.Services.WebMethod]
public CascadingDropDownNameValue[] GetVendors(string knownCategoryValues,
string category)
{
List l = new List();
l.Add(new CascadingDropDownNameValue("International", "1"));
l.Add(new CascadingDropDownNameValue("Electronic Bike Repairs & Supplies", "2"));
l.Add(new CascadingDropDownNameValue("Premier Sport, Inc.", "3"));
return l.ToArray();
}
}

}

Am getting error like "method error (403)" .
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Nilesh Jadav11y ago
Hey!

Try this

http://www.c-sharpcorner.com/UploadFile/009464/cascading-one-dropdownlist-with-other-dropdownlist-in-asp-ne/
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Upendra Pratap Shahi11y ago
http://www.aspsnippets.com/Articles/AJAX-Cascading-DropDown-Example-in-ASPNet.aspx
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Sreenish11y ago
but i didnt get output.link u shared they didnt used cascading dropdown.
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Upendra Pratap Shahi11y ago
Kindly read all the link.
You will find your answer.
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Sreenish11y ago
And without database i want to know cascading dropdown
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Sreenish11y ago
hi Webform client side
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Vincent Maverick Durano11y ago
Are you using MVC or Web Forms? If you are using Web Forms then what kind of implementation do you want, server-side or client-side cascading list?
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Upendra Pratap Shahi11y ago
http://www.c-sharpcorner.com/UploadFile/vemuhemanth/cascading-dropdown-in-Asp-Net-using-jquery/

http://www.aspdotnet-suresh.com/2013/10/jquery-cascading-dropdown-list-in-aspnet.html

http://www.mikesdotnetting.com/Article/97/cascading-dropdownlists-with-jquery-and-asp-net

http://www.aspsnippets.com/Articles/AJAX-Cascading-DropDown-Example-in-ASPNet.aspx

http://www.aspsnippets.com/Articles/Populate-Cascading-DropDownList-from-Database-in-ASPNet-Example.aspx
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Rajeesh Menoth11y ago
Hi ASP ASp,

1 ) http://www.aspdotnet-suresh.com/2011/01/introduction-here-i-will-explain-how-to.html

2) http://www.codeproject.com/Tips/883701/An-ASP-NET-MVC-Cascading-Dropdown-List

3) http://www.aspsnippets.com/Articles/Creating-Cascading-DropDownLists-in-ASP.Net.aspx
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