ADO.NET :: Object Oriented Linq - Populate Second Dropdown List With Results?
Sep 23, 2010
I am wondering into the unknown field of OOA and was looking for a way to separate my business logic from my UI. A small example is as followed:
Two DropDowns where the second one is depended on the selection in the first DropDown. You have Cars, planes, etc. inm the first DropDown and Toyota, Chrysler, etc in the second (depending on the value in the first DD.I have som Lin syntax. The file is situated in the App_Code folder and NOT as code behind. [Code]....
I would like to know how i can make populate my second Dropdown list with results. At this point it's just putting in the complete ProductSubCategory.
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Feb 26, 2011
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Dec 9, 2010
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[Code]....
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Oct 6, 2010
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Aug 25, 2010
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Feb 24, 2010
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Dec 1, 2010
i am trying to use LINQ to populate a drop-down. This code works fine on my local machine, but I get an error when I try to run it on the live site.
The error occurs on this line: ddTicketMasterRoles.DataBind()
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.Read_VB$AnonymousType_0`2(System.Data.Linq.SqlClient.Implementation.ObjectMaterializer`1<System.Data.SqlClient.SqlDataReader>)
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.MethodAccessException:
[code]....
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Feb 8, 2011
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Jun 23, 2010
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[Code]....
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Mar 16, 2011
Here is my Controller:
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//
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@Html.ValidationSummary(true).....
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May 26, 2010
i've run into small problem, here's the thing: i've got a dropdown list (ddlist1) that i am populating from a database, that works fine. However, depending on the option selected here, i need to populate another dropdown list (ddlist2). for example, if on ddlist1 i select option 1, on ddlist 2 i should get a list of options related to option 1 from ddlist1. If i select option 2, on ddlist 2 i should get a list of options related to option 2 from ddlist 1. and so forth. this information with which ddlist needs to be filled, comed from another database. o how can i go about this? m not sure yet how to code the second ddlist.
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Mar 2, 2010
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Nov 18, 2010
how do i initaize array in just one line so that dropdown list can be populated easily.
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Oct 4, 2010
I'm stuck with a problem to populate a DropDownList control with values from the database using item field template in read only mode. since I'm new to ASP.NET. Below is the code and the error I'm getting:
'PictureReadOnlyCategories' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value 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.ArgumentOutOfRangeException: 'PictureReadOnlyCategories' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value
The code for this is :
<asp:SqlDataSource ID="categoriesDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
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<SelectParameters>
[Code]....
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Feb 8, 2011
I'm trying to populate a dropdown list with a list of all the usergroups in existence in an existing active directory.
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I need getting a drop down list selection to populate a calendar. The user selects a vehicle from the dropdownlist and based on that selection, the calendar needs to populate a link with drivers names on whatever days the vehicle is rented out for.
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Oct 6, 2010
I have an application as: SelectCommand="SELECT [CategoryID], [Name], [UserId] FROM [Categories] WHERE ([UserId] = @UserId) ORDER BY [Name]">
</asp:SqlDataSource>
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<asp:QueryStringParameter Name="CategoryID" QueryStringField="ID" />
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[Code]....
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Feb 18, 2010
I normally have a function to populate my dropdown list with the database values.
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I am creating an authentication service. This service has one of the methods to validate username and password and return a status based on it.
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Jun 23, 2010
Please can anybody provide me ebook of advance object oriented programming book.
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Jun 8, 2010
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below is the code from the UsersBLL:
using System;
using System.Data;
using PedChallenge.DAL.PedDataSetTableAdapters;
[code]...
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Nov 1, 2010
Using a gridView to read some data from a SQL database. The user can select a record in the gridview. On the SelectedIndexChanged property I populate this to a couple of text boxes & drop down list; txtCountry,ddlProvince,ddlCity.
I have special characters in France ( accent marks) and when I populate it to the drop down list it fails giving out the error message "SelectedValue which is invalid because it does not exist in the list of items".
Example of items that I try to populate are as follows. ( separated by commas) ÃŽLE-DE-FRANCE , PROVENCE-ALPES-CÔTE D'AZUR , RHÔNE-ALPES, DRÔME,ISÈRE ........ When I looked in the drop down lists for Province and Cities I see those Provinces there in the item list. When I debug line by line the word ÃŽLE-DE-FRANCE comes out like ÎLE-DE-FRANCE which is not there in the drop down list. Got to know the ÃŽ is typed by pressing down ALT+206 and lloks like this is what is coming in at the start of the string above.
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Oct 13, 2010
I need to populate a dropdown list with users who match certain role criteria. For example, if I have the following roles: Manager, Employee, Supervisor I would like to populate the list with only the Manager and Employee roles. Some individuals have multiple roles and they should be excluded if they also have the Supervisor role as illustrated below:
Name: A , Role(s): Manager, Employee, Supervisor
Name: B, Role(s): Employee
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I can use Roles.GetUsersInRole("Employee") but I am not sure if this is efficient or not.
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