i hv been tryin since a long time..but not able to resolve my problem.M making a cascadin dropdown with ajax but gettin method error 500 in my dropdown on running it..here's my code1. dataservice.cs file
using System;
using System.Web;
using System.Collections;
[code]...
I have a cascading dropdown which loads countries into a dropdownlist.
When I type: www.domain.com, it all works.
However, when I type: domain.com it stops working and the dropdown shows: "[method error -1]"
Here's my code:
<asp:TextBox ID="tbCity" Width="90" MaxLength="50" CssClass="inactive" autocomplete="off" runat="server" />
<cc1:AutoCompleteExtender ID="AutoSuggestCities" runat="server" TargetControlID="tbCity"
CompletionInterval="2" CompletionSetCount="50" MinimumPrefixLength="3" ContextKey="" ServicePath="http://www.domain.com/geolocation.asmx" ServiceMethod="GetCitiesForCountryOrProvince" />
ps. I use url rewriting and to make sure the servicepath is always correct I used the full path.
I have created a dropdown through code behind.Then created a Cascading dropdown that also through code behind.
All the properties of cascading dropdown have been initialized properly (as i think).
And web service method is defined in separate file.
DDL and Cascading DDL have been created in App_code/NewFolder through a class file. That webservice.vb file too is placed in this folder. and webservide.asmx file is placed in root directory of the project.
When i run the project dropdown is filled only with [Method error 500]. query to fetch data from database have been written in webservice.vb file without any known error.
I am getting [MethodError 500] when I use cascading drop down. below is my code
<tr>
<td >
Select a Hoster:
</td>
<td>
<asp:DropDownList ID="ddlFeaturedHoster" runat="server" ></asp:DropDownList>
</td>
</tr>
<ajaxToolkit:CascadingDropDown ID="cddHoster" runat="server" TargetControlID="ddlFeaturedHoster"
PromptText="Select a Hoster" LoadingText="Loading ..." Category="ActiveHoster"
ServiceMethod="GetDropDownContents" ServicePath="~/Hosting/HostingService.asmx"/>
Service Code:
[WebMethod]
[ScriptMethod]
public CascadingDropDownNameValue[] GetActiveHosters()
{
List<CascadingDropDownNameValue> returnList = new List<CascadingDropDownNameValue>();
HostersManager hosterManager = new HostersManager();
List<Hosters_HostingProviderDetail> hosters = hosterManager.GetAllHosters();
returnList.Add(new CascadingDropDownNameValue("--Please Select One--","0",true));
foreach (Hosters_HostingProviderDetail item in hosters)
{
returnList.Add(new CascadingDropDownNameValue() { name=item.HostingProviderName, value= item.HosterID.ToString()});
}
return returnList.ToArray() ;
}
[WebMethod]
[ScriptMethod]
public CascadingDropDownNameValue[] GetDropDownContents(string knownCategoryValues, string category)
{
knownCategoryValues = FormatCategoryWord(knownCategoryValues);
List<CascadingDropDownNameValue> values = new List<CascadingDropDownNameValue>();
HostersManager hosterManager = new HostersManager();
switch (category)
{
case "ActiveHoster":
values.AddRange(GetActiveHosters());
break;
case "ActiveOffer":
values.AddRange(GetActiveOffers(1));
break;
}
return values.ToArray<CascadingDropDownNameValue>();
}
/// <summary>
/// Formats the category word
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
private string FormatCategoryWord(string value)
{
if (string.IsNullOrEmpty(value)) return value;
if (value.LastIndexOf(":") > 0) value = value.Substring(value.LastIndexOf(":") + 1);
if (value.LastIndexOf(";") > 0) value = value.Substring(0, value.LastIndexOf(";"));
return value;
}
}
i'm using the Ajax cascading dropdown list it works fine. But how to call the server side after the dropdown list populated....
i don't want to call those method in drop down list index changed because it may cause postback..
I would like to populate Cascading DropDownList From SQL Server.
I prepare my project the same way as in this article: [URL] ....
But all the time I have "Method error 500" I read many articles how to solve this issue but without success.
Below there are my codes:
----SQL DB has two tables:
1.tblUAP (UAP (PK), Start_Date,End_Date)
2.tblGAP(idGAP (PK),GAP,UAP(FK to tblUAP))
 ---project1.aspx
<%@ Page Language="C#" EnableEventValidation="false" AutoEventWireup="true" CodeBehind="Project1.aspx.cs" Inherits="TEST.Project1" %>
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>
....
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</asp:ToolkitScriptManager>
[Code].....
----Services.asmx
using System;
using System.Web;
using System.Web.Services;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
[Code] ....
What else Can I check ??
I have 3 cascading dropdown lists in an update panel. To submit the values of cascading dropdown without error it needs to turn eventvalidation off. Is there any way that i can avoid turning off the event validation and still use cascading dropdown?
View 1 RepliesI have 3 table in database
1-state
Id state
1 USA
2 UK
2-City
Id name state
1 Canada USA
2 London UK
3-Region
Id regionname cityid
1 01 Canada
2 02 London
and I have 3 DropDownList that refer below thread [URL] ...
I use cascadingdropdown for these 3 dropdownlist below are codes:
AND
[WebMethod]
public CascadingDropDownNameValue[] GetCountries(string knownCategoryValues)
{
string query = "SELECT state FROM stateTest";
List countries = GetData(query);
return countries.ToArray();
}
[Code] ....
1-DDLstate
2-DDLcity
3-DDLregion
at first I should select Item from DDLsate then DDlcity and at the end I should select Item from DDLregion
above code work correctly for ddlstate and ddlcity but it doesn't work for ddlregion...
I mean when I select Item from ddlcity in ddlregion shows:[Metod error500]
I am trying to get my cascading comboboxes to work, but am getting a [Method error 500]. Any ideas? I've searched online, the code should work....Thanks in advance for your help!
ADDSTORY.ASPX:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="addstory.aspx.cs" Inherits="addstory" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<form id="form1" runat="server">
<asp:ToolkitScriptManager ID="ScriptManager1" runat="server" />
<td class="style3">
<asp:DropDownList ID="selectproject" runat="server" Width="225"></asp:DropDownList>
<asp:CascadingDropDown ID="ccd1" runat="server"
ServicePath="~/dropdown.asmx?company=<%=co_id %>" ServiceMethod="GetProjects"
TargetControlID="selectproject" Category="Project"
PromptText="Select Project" />
</td>
</tr>
<tr>
<td class="style3"></td>
<td width = "150" class="style3">Iteration:</td>
<d class="style3">
<asp:DropDownList ID="selectiteration" runat="server" Width="225"></asp:DropDownList>
<asp:CascadingDropDown ID="ccd2" runat="server"
ServicePath="~/dropdown.asmx?company=<%=co_id %>" ServiceMethod="GetIterations"
TargetControlID="selectiteration" Category="Iteration"
PromptText="Select Iteration" />
</td>
</tr>
DROPDOWN.ASMX:
using System.Web.Script.Services;
using AjaxControlToolkit;
using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Data.SqlClient;
/// <summary>
/// Summary description for WebService
/// </summary>
[WebService(Namespace = "[URL]/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService()]
public class dropdown : System.Web.Services.WebService
{
private string GetConnectionString()
{
return System.Configuration.ConfigurationManager.ConnectionStrings["MyConnection"].ConnectionString;
}
[WebMethod]
public CascadingDropDownNameValue[] GetProjects(string knownCategoryValues, string category)
{
string co_id = this.Context.Request.QueryString["company"].ToString();
SqlConnection conn = new SqlConnection(GetConnectionString());
sonn.Open();
SqlCommand comm = new SqlCommand("Select ProjectName, ProjectID FROM Project WHERE CompanyID = '" + co_id + "'", conn);
SqlDataReader dr = comm.ExecuteReader();
List<CascadingDropDownNameValue> l = new List<CascadingDropDownNameValue>();
while (dr.Read())
{
l.Add(new CascadingDropDownNameValue(dr["ProjectName"].ToString(), dr["ProjectID"].ToString()));
}
conn.Close();
return l.ToArray();
}
[WebMethod]
public CascadingDropDownNameValue[] GetIterations(string knownCategoryValues, string category)
{
int ProjectID;
StringDictionary kv = CascadingDropDown.ParseKnownCategoryValuesString(knownCategoryValues);
if (!kv.ContainsKey("Project") || !Int32.TryParse(kv["Project"], out ProjectID))
{
throw new ArgumentException("Couldn't find project.");
};
SqlConnection conn = new SqlConnection(GetConnectionString());
conn.Open();
SqlCommand comm = new SqlCommand("SELECT Select CONVERT(VARCHAR(10), StartDate, 103) + ' - ' + CONVERT(VARCHAR(10), EndDate, 103) AS Iteration, ProjectIterationID FROM Iterations WHERE ProjectID=@ProjectID", conn);
comm.Parameters.AddWithValue("@ProjectID", ProjectID);
SqlDataReader dr = comm.ExecuteReader();
List<CascadingDropDownNameValue> l = new List<CascadingDropDownNameValue>();
while (dr.Read())
{
l.Add(new CascadingDropDownNameValue(dr["Iteration"].ToString(), dr["ProjectIterationID"].ToString()));
}
conn.Close();
return l.ToArray();
}
}
I tried cascading dropdown in asp.net using ajax. I have tried with 3 dropdown control. The scenario is First dropdown is loaded when page gets loaded and the second dropdown is loaded based on first is selected and thrid dropdown is loaded based on second one selected, now I want to know how do I load third dropdown based on first and second selected value...
View 1 RepliesI am getting the error Method 500 while filling 3092 cities in to cascading dropdown control. i am using the following code.
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="HotelDestination.asmx" />
</Services>
</asp:ScriptManager>
[code]...
i havce this web service
[Code]....
and this aspx page
[Code]....
perhaps i followed this example here
http://programming.top54u.com/post/AJAX-Cascading-Dropdown-Example-using-SQL-Database.aspx
it return an error that
System.InvalidCastException: unable to cast di object of 'AjaxControlToolkit.CascadingDropDown' on tye 'System.Web.UI.WebControls.DropDownList'.
Suppose parent dropdown is car (Values are car1, car2, car3)and its child is color(for car1 R Y G B, For car2 R Yand for car3 G B).Now on selection of car2 R and Y will appear and select R, then again made the change on car and select car3 then again select is comiing with G and B and select B.
Now if I select again in car, car1 then the child is populating with the values of car1 but it takes the B as a default value as it was previously selected and also present for car1 too.This case is only happen. on select of child value which is availble for both parent selection.
i am going to use cascading dropdown in my project But i cant understand why it is not working let me know what i am doing wrong...
this is my aspx page,
[code]....
I have a cascading dropdown which is dynamically created and does a postback based on a certain condition. How do i set the selected value after the postback
View 1 Replies[Code]....
Dont go away by looking a difficult probem.
I want to make a cascading dropdown list without using an UpdatePanel. I need tips for starting out this task. Currently,
I am using asp.net 2.0 .Will I be able to parse JSON in VSS 2005 if I use JQuery ?
What is the recommended alternate for UpdatePanel in Visual Studio 2005 ?
I am using Cascading Dropdown nad would be populating the values of the second dropdown from the session thats created when the page load.With the initial page load, the cascading dropdown works fine. But when I change the selection for the first one, the session values are not retained.
View 1 RepliesI have been trying to make a cascading drpdown using ajax using this link [URL] But m nt getting a clear picture abt it.. I have a table 'car' with fields of 'id','make','model','color'. I have 2 dropdowns on my form for make & model.I want to populate the model dropdown using the make dropdown but without postback.Till nw I have tried this :-
using System;
using System.Web;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Web.Services;
using System.Web.Services.Protocols;
using AjaxControlToolkit;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
//using System.Web.Script.Services.ScriptService;.............................
I want to display the image before the data in the dropdown based on the data category? is it possible with cascading dropdown?
View 2 RepliesI have a user control in which i have implemented Cascading dropdown. It works perfectly fine in IE but doesnt in Firefox. I am using webservice to get my data for the dropdowns.
View 3 Replies<asp:DropDownList ID="ddlModuleName" runat="server" ClientIDMode="Static">
</asp:DropDownList>
<cc1:CascadingDropDown ID="cdlModule" TargetControlID="ddlModuleName" PromptText="Select Module" PromptValue="0" ServicePath="~/controls/WebService.asmx" ServiceMethod="GetModules" runat="server" Category="ModuleID" LoadingText="Loading..." />
I am binding the dropdownlist by using ajax cascading drop down now i need to preselect the dropdown value in code behind page in page load (for update operation) is it possible
I am new to Ajax Control Toolkit, with the help of online tutorials I had created a cascading dropdown list in asp.net and tested it on my local machine. For this dropdown list data source would be an xml file (which is saved on my local machine c drive). I haven't encountered any issues until I deploy the precompiled web site on to IIS 7. When I open the web site from IIS I would see the two dropdown boxes on the web page with an error "Method error 500". I believe this error occured due to incorrect xml file
path provided on IIS. I had copied xml and xsd files into IIS server C drive but it did not help out and then I created a network map and placed the xml and xsd files in that shared folder tried to access that path from web service, it's working on local machine but not on IIS. It would be great, if any one could explain me the solution.
Following is the .aspx and .asmx code:
.aspx code:
<form id="form1" runat="server"> <div> <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> </asp:ToolkitScriptManager> <br /> <table> <tr> <td> <asp:DropDownList ID="DropDownList1" runat="server"
Height="20px" Width="257px"> </asp:DropDownList> <asp:CascadingDropDown ID="CascadingDropDown1" runat="server" Category="Category" TargetControlID="DropDownList1" PromptText="[select category]" ServicePath="~/WebService.asmx" ServiceMethod="GetCategory"> </asp:CascadingDropDown>
<br /> </td> </tr> <tr> <td> <asp:DropDownList ID="DropDownList2" runat="server" Height="20px" Width="257px"> </asp:DropDownList> <asp:CascadingDropDown ID="CascadingDropDown2" runat="server" Category="Type" TargetControlID="DropDownList2" PromptText="Select
Type]" LoadingText="Loading Type.." ParentControlID="DropDownList1" ServicePath="~/WebService.asmx" ServiceMethod="GetType"> </asp:CascadingDropDown> <br /> </td> </tr> </table> </div> </form>
.asmx code(.cs code):
[WebMethod]
public AjaxControlToolkit.CascadingDropDownNameValue[] GetCategory(string knownCategoryValues, string category)
{
XmlDocument _doc = new XmlDocument();
_doc.Load(HttpContext.Current.Server.MapPath("~/C:/ItSupportCategory.xml"));
XmlNodeList list = _doc.SelectNodes("/CategoryList/Category");
List<CascadingDropDownNameValue> categorylist = new List<CascadingDropDownNameValue>();
foreach (XmlNode node in list)
{
string catid = node.Attributes["value"].Value.ToString();
string catname = node.Attributes["name"].Value.ToString();
categorylist.Add( new CascadingDropDownNameValue(catname,catid));
}
return categorylist.ToArray();
}
[WebMethod]
public AjaxControlToolkit.CascadingDropDownNameValue[] GetType(string knownCategoryValues, string category)
{
int catID;
StringDictionary selectedvalue = AjaxControlToolkit.CascadingDropDown.ParseKnownCategoryValuesString(knownCategoryValues);
catID = Convert.ToInt32(selectedvalue["category"]);
List<AjaxControlToolkit.CascadingDropDownNameValue> cascadingValues = new List<AjaxControlToolkit.CascadingDropDownNameValue>();
XmlDocument _doc = new XmlDocument();
_doc.Load(HttpContext.Current.Server.MapPath("~/C:/ItSupportCategory.xml"));
XmlElement root = (XmlElement)_doc.SelectSingleNode("/CategoryList/Category[@value='" + catID + "']");
for (int i = 0; i < root.ChildNodes.Count; i++)
{
string typeid = root.ChildNodes[i].Attributes["value"].Value.ToString();
string typename = root.ChildNodes[i].Attributes["name"].Value.ToString();
cascadingValues.Add(new CascadingDropDownNameValue(typename, typeid));
}
return cascadingValues.ToArray();
}
Xml File:
<?xml version="1.0"?>
<CategoryList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test.xsd">
<Category value ="1" name="SYSTEM WIDE">
<Type value ="1" name="Email"/>
<Type value="2" name="SAP Locked"/>
<Type value="3" name="Job Archive Full" />
</Category>
<Category value="2" name="SAP">
<Type value="3" name="Pricing Incorrect"/>
<Type value="5" name="New Item #"/>
<Type value="6" name="Reports"/>
<Type value="7" name="New User Setup"/>
</Category>
<Category value="3" name="OTHER">
<Type value="8" name="Production"/>
<Type value="9" name="Office"/>
<Type value="10" name="Toner for Printer"/>
<Type value="11" name="Security Camre Lookup"/>
</Category>
</CategoryList>
I have 3 dropdown lists. All 3 are using the same generic list for there items. I am using C# as the code behind. The code below shows the DTO list i am using and how I'm adding them to the drop downs...
[Code]....
I want to populate the cascading Dropdown values without Promttext.
Scenario is .If a single value is retrived from the database then I think no need to populate the promt text. It may populate only that value and call the next function from the inside of it. Can it be possible using web methods.
