How to solve error[Method error 500]

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How to solve error[Method error 500] while using cascading dropdown..?.
I gave it as:

ASP.NET

<ajaxToolkit:CascadingDropDown ID="ddlProjectName_CascadingDropDown"
                     runat="server" TargetControlID="ddlProjectName" ParentControlID="ddlClientName"
                     Category="clientname" ServiceMethod="GetProjectDetailsById" PromptText="select" PromptValue="" LoadingText="select">
                 </ajaxToolkit:CascadingDropDown>

Actually our project contains several other projects so in top we will call references as:

C#

using TicketSystem.Bll;
    using TicketSystem.Bll.Interface;
    using TicketSystem.Utilities;
    using TicketSystem.Utilities.Entities;
and then give as:
 protected void ddlClientName_SelectedIndexChanged(object sender, EventArgs e)
        {

            int ClientId = Convert.ToInt32(ddlClientName.SelectedValue);
            var httpCookie = Response.Cookies["ClientId2"];
            if (httpCookie != null) httpCookie.Value = ClientId.ToString();

            ddlProjectName.DataSource = _TaskService.GetProjectDetailsById(ClientId);
            ddlProjectName.DataValueField = "ProjectId";
            ddlProjectName.DataTextField = "ProjectName";
            ddlProjectName.DataBind();
            if (ddlProjectName.Items.Count!= 0)
            {
                ddlProjectName.Items.Insert(0, new ListItem("--Select--", "0"));
            }
         
        }

Posted 2-Dec-12 21:41pm

Sharon 2

Updated 2-Dec-12 22:36pm

Krunal Rohit

v4

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Comments

Herman<T>.Instance 3-Dec-12 3:54am

it a bit more detail (code snippit) could help us to help you

Sharon 2 3-Dec-12 3:59am

i dont know much about this error

OriginalGriff 3-Dec-12 4:04am

What digimanus is saying is that you haven't provided us with enough information to help you to solve the problem.
We need to see the relevant code fragment that produces the error, or we would just be guessing!
Use the "Improve question" widget to edit your question and provide better information.

[no name] 3-Dec-12 4:17am

Where's your service??

Sharon 2 3-Dec-12 4:22am

Actually our project contains several other projects so in top we will call references as:
using TicketSystem.Bll;
using TicketSystem.Bll.Interface;
using TicketSystem.Utilities;
using TicketSystem.Utilities.Entities;
and then give as:
protected void ddlClientName_SelectedIndexChanged(object sender, EventArgs e)
{

int ClientId = Convert.ToInt32(ddlClientName.SelectedValue);
var httpCookie = Response.Cookies["ClientId2"];
if (httpCookie != null) httpCookie.Value = ClientId.ToString();

ddlProjectName.DataSource = _TaskService.GetProjectDetailsById(ClientId);
ddlProjectName.DataValueField = "ProjectId";
ddlProjectName.DataTextField = "ProjectName";
ddlProjectName.DataBind();
if (ddlProjectName.Items.Count!= 0)
{
ddlProjectName.Items.Insert(0, new ListItem("--Select--", "0"));
}

}

1 solution

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Krunal Rohit · Answer 1 · 2012-12-02T22:38:00

Solution 1

A 500 normally just means that there was an exception in the server side code, which wasn't handled.

You'll need to trace/log through the webservice to see what is failing.

You're almost certainly looking for a .Net code error.

more info @ http://forums.asp.net/t/1109698.aspx/1[^]

Posted 2-Dec-12 22:38pm

Krunal Rohit