deploy mvc 4 razor application onto shared hosting 404 default document not found error

the solution for me is to have this under


also you need to make sure your hosting environment is setup for .net v4.x and integrated mode

mvc temperary value options

ViewData/ViewBag : only eixsts for single controller request on single view

TempData: exists beyond single controller request inside same controller, expires once the value is requested

Session: exists for multiple controller requests within same controller, expires once navigated away to other controller

mvc 4 custom server validation on multiple fields

Imaging there is a many to many relationship between category and product and there are some specific information required on this many to many relationship, therefore we need a dedicated entity CategoryProduct to work with. On submission I need to validate whether the combination of category and product selections already exist.

in validation controller provide:


public JsonResult ValidateCategoryProduct(int? categoryProductId, int categoryId, int productId)
        {
            if (!categoryProductId.HasValue)
            {
                categoryProductId = -1;
            }

            var validationResult = categoryProductRepository.ValidateCategoryProduct(categoryProductId.Value, categoryId, productId);
            if (validationResult)
            {
                return Json(true, JsonRequestBehavior.AllowGet);
            }
            else
            {
                string output = "This category product relationship has already been setup.";
                return Json(output, JsonRequestBehavior.AllowGet);
            }
        }

in my model I have


[DisplayName("CategoryId")]
        [Remote("ValidateCategoryProduct", "ValidationLogic", AdditionalFields = "CategoryProductId,ProductId")]
        [Editable(true)]
        public int CategoryId { get; set; }

        [DisplayName("ProductId")]
        [Required(ErrorMessage = "Please select a Product")]
        [Remote("ValidateCategoryProduct", "ValidationLogic", AdditionalFields = "CategoryProductId,CategoryId")]
        [Editable(true)]
        public int ProductId { get; set; }

in my view I have the following under the category textbox
@Html.ValidationMessageFor(model => model.CategoryId, "*")
I also have the following under the productid textbox
@Html.ValidationMessageFor(model => model.ProductId, "*")

now we are good to go, the only issue left is that we need to figure out a way to apply validation result to both properties at once..... puzzled at the moment.

KendoUI Grid MVC4 hide delete button in the list if there is depent records

.CellAction(cell=>{
                     if (cell.Column.Title == "Delete" && cell.DataItem.ChildRecords.Count > 0)
                     {
                         cell.HtmlAttributes["style"] = "visibility:hidden";
                     }
                 })

alternatively:


columns.Template(
                          @@Html.ActionLink("Delete", "Delete", new { id = item.ChildRecordId}, (item.ChildRecords.Count > 0 ? new {style = "display: none"} : null))
                          ).Title("Delete");

raddatepicker get selected date client side into a string

RadDatePicker1.get_dateInput().get_selectedDate().format("dd/MM/yyyy");

radtextbox get value from client side

$find("<%= RadTextBox1.ClientID %>").get_value();

aspx dropdownlist get selected text from client side using javascript

$('[id*=ddlCountry] option:selected').text()

asp.net membership default setup

with these settings inside   you are set to go.

tsql add default constraint

IF NOT EXISTS(select * from sys.DEFAULT_CONSTRAINTS where NAME like 'def_myconstraint1%')
BEGIN

 ALTER TABLE mytable1
 ADD CONSTRAINT def_myconstraint1 DEFAULT 1 FOR mycolumn1
END
GO

css center a div

tried to use text-align:center didnt work, the correct way is:

width: 10240px ;
  margin-left: auto ;
  margin-right: auto ;

asp.net web application update web.config SMTP settings in global.ascs application_start():

asp.net web application update web.config SMTP settings in global.ascs application_start():

System.Configuration.Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~/");

            System.Net.Configuration.MailSettingsSectionGroup mailSettingsGroup = config.GetSectionGroup("system.net/mailSettings") as System.Net.Configuration.MailSettingsSectionGroup;

            mailSettingsGroup.Smtp.Network.Host = Properties.Settings.Default.SMTPServer;

            mailSettingsGroup.Smtp.Network.Port = Properties.Settings.Default.SMTPPort;

            mailSettingsGroup.Smtp.Network.DefaultCredentials = Properties.Settings.Default.SMTPAuthenticationEnabled;

            if (mailSettingsGroup.Smtp.Network.DefaultCredentials)

            {

                mailSettingsGroup.Smtp.Network.UserName = Properties.Settings.Default.SMTPUsername;

                mailSettingsGroup.Smtp.Network.Password = Properties.Settings.Default.SMTPPassword;

            }

prevent double click on asp.net button control

headache solved after search and search and search for solutions:

OnClientClick="this.disabled = true; this.value = 'Submitting...';__doPostBack('SaveChangesButton','')"

asp.net Response.RedirectToRoute issue

In my global.ascx I have the routing setup: 

routeCollection.MapPageRoute("My Home Page", "myhomepage/{myid}", "~/MyHomePage.aspx");

I use Response.RedirectToRoute() with a parameter to open a page. I identified that in the following cases the redirect will fail:

• The parameter is not given. e.g. Response.RedirectToRoute("My Home Page");
• The parameter as null value. e.g. Response.RedirectToRoute("My Home Page", new {myid = null});
• The parameter as null value. e.g. Response.RedirectToRoute("My Home Page", new {myid = string.empty});

Apparently you MUST give a non-empty value to the parameter.

regular expression for character range

regular expression for character range:
e.g. between 1 and 500:
^.{1,500}$

fix asp.net checkboxlist wierd layout

on one page my checkboxlist shows up correctly, on another it never does. After hours of trying I figured this out: assign CheckBoxList class to your css class of the checkboxlist, play with the properties inside the class will help you fix the issues.


         .CheckBoxList input
        {
            margin-left: -10px;
        }
        .CheckBoxList td
        {
            padding-left: 10px;
            width:80%;
        }

t-sql change a column from nullable to not null and add default value it

--1.make sure all records have a value in the column
update [TableName]
SET [ColumnName] = [Default Value]

--2. change the column to not null
ALTER TABLE [TableName]
ALTER COLUMN [ColumnName] [data type] NOT NULL
GO

--3. add default value constraint to the column
ALTER TABLE [TableName] WITH NOCHECKADD CONSTRAINT [DF_DefaultName] DEFAULT [Default Value] FOR [ColumnName]
GO

jquery to check if an asp.net checkbox control is selected or unselected:

$('input[id$=cb1]').is(':checked'){
          //your code here
}

Telerik OpenAccess Service works locally but not hosted

I have 3 projects, one with the entity model, another one with the OData v3 service generated from the entity model, the third one is an asp.net web application.

During local development the service reference I added into the web app is from same solution: http://localhost:55001/MyModelService.svc

After everything was successfully tested I then published the service project and hosted it on a third party hosting service. I was able to browse the service successfully by going: http://service.myapp.com/MyService.svc

I then re-added the existing service reference into my web app with the remote url shown above, published the web app on another hosting service.

When I load up the web app I got an error:
DataServiceQueryException was unhandled by user code
An error occurred while processing this request.

The issue turned out to be really fundamental which I missed out through all my WCF learnings: the cross domain policy xml!

The solution is to add a clientaccesspolicy.xml into the OpenAccess Service WCF app root folder with the following content:

ASP.NET LinkButton equivalent in .NET MVC

MS Office EXCEL 2010 the safest way to open .csv file and maintain leading zeros

Step 1:
Open EXCEL, click on tab "Data", select "From Text".

Step 2:
Browse to your local file folder and open the .csv file.

Step 3:
In the "Text Import Wizard - Step 1 of  3" popup, select "Delimited" and click on "Next".

Step 4:
In the "Text Import Wizard - Step 2 of  3" popup, select "Comma", un-select all other options, and click on "Next".

Step 5:
In the "Text Import Wizard - Step 3 of  3" popup, in "Data Preview" click to select the column you want to maintain leading zeros, then select "Text" in "Column data Format", now click on "Finish".

Step 6:
In the "Import Data" popup click on "OK".

Now you can see all leading zeros in EXCEL!