Tuesday, May 28, 2013

MVC Links : Types of filters and other misc tech info

MVC

http://www.codeproject.com/Articles/577776/AplusBeginner-27splusTutorialplusforplusUnderstand

Type of filters

Now taking this discussion further, Let us first discuss the various types of filters that can be implemented to inject custom processing logic.

• Authorization filter

• Action filter

• Result filter

• Exception filter

Order of Execution

IAuthorizationFilter.OnAuthorization

2. IActionFilter.OnActionExecuting

3. IActionFilter.OnActionExecuted

4. IResultFilter.OnResultExecuting

5. IResultFilter.OnResultExecuted

In case there is an exception, OnException will will be called as instead of the result filters.

===============

http://www.dotnet-tricks.com/Tutorial/mvc/4XDc110313-return-View()-vs-return-RedirectToAction()-vs-return-Redirect()-vs-return-RedirectToRoute().html

return View() vs return RedirectToAction() vs return Redirect() vs return RedirectToRoute()

================

http://www.dotnet-tricks.com/Tutorial/mvc/Q8V2130113-RenderPartial-vs-RenderAction-vs-Partial-vs-Action-in-MVC-Razor.html

RenderPartial vs RenderAction vs Partial vs Action in MVC Razor

================

MVC Step By Step Tutorial on codeproject link

http://www.codeproject.com/Articles/552846/Why-s-How-s-of-Asp-Net-MVC-Part-1

Why(s) & How(s) of Asp.Net MVC Part 1 - MVC Basics
Why(s) & How(s) of Asp.Net MVC Part 2 - Playing with Asp.Net MVC
Why(s) & How(s) of Asp.Net MVC Part 3 - DB First
Why(s) & How(s) of Asp.Net MVC Part 4 - Model First
Why(s) & How(s) of Asp.Net MVC Part 5 - Code First

Learn MVC (Model view controller) Step by Step in 7 days – Day 2

http://www.codeproject.com/Articles/207797/Learn-MVC-Model-View-Controller-step-by-step-in-7

MVC Error : CS0103: The name 'Scripts' does not exist in the current context

CS0103: The name 'Scripts' does not exist in the current context

Source Error:

@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}

The solution is

1. Also install "Microsoft ASP.NET Web Optimization Framework" package from NuGet
2. Include <add namespace="System.Web.Optimization"> in both web.configs.

Views Web.config

<namespaces>
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Routing" />
<add namespace="System.Web.Optimization"/>
<add namespace="System.Web.Helpers"/>
</namespaces>

Root Web.config

<namespaces>
<add namespace="System.Web.Helpers" />
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Routing" />
<add namespace="System.Web.WebPages" />
<add namespace="System.Web.Optimization"/>
</namespaces>

Sunday, May 26, 2013

MVC uses other design patterns ....

A good point to ponder over; is this really so ?

http://www.codeproject.com/Articles/552846/Why-s-How-s-of-Asp-Net-MVC-Part-1

Design Patterns in MVC

Even though MVC is design pattern itself, the entire MVC framework contains some design patterns itself. Below is a list of design parrens used in MVC (or Asp.Net MVC) regardless the platforms. Detaild description of these patterns in MVC are out of the scope of this post, I am sure you can google and could know much more about them.

Front Controller	Consolidates all request handling by channeling requests through a central controller.
Strategy	The View-Controller relationship, The way conroller hookup view at runtime.
Factory Method	Specify the default controller class for a view
Decorator	In the context of MVC, decorator could fit into your views.
Observer	One Model, Multiples views ( observers/subscribers ), and the publisher manages the communication
Mediator	Several different Models, Several views, and the mediator manages the communications between them.

Monday, May 20, 2013

$.ajax : error trapping code

success: function(result) { alert(result.d); },
error: function(xhr, status, error) {
var err = eval("(" + xhr.responseText + ")");
alert(err.Message);
}

Sunday, May 19, 2013

links for jquery and json web services

Using jQuery to Consume ASP.NET JSON Web Services

http://encosia.com/using-jquery-to-consume-aspnet-json-web-services/

The article also has a compilation of other links at the bottom :

36 Mentions Elsewhere

230 Comments

Sunday, May 12, 2013

jqGrid paging tips

1. Use the setgridparm after putting data in jqgrid

grid.setGridParam({ rowNum: 4, total: 3, page: 1, records: 5 }).trigger("reloadGrid");
2. Keep the datatype as "local" while creating jqGrid.
3. Width of the grid is not auto adjusted, keep it enough so that pager is visible.

======================

function bb() {
$.ajax({
type: "POST",
url: "Service.svc/DoWork1",
dataType: "json",
success: function(result) {
alert(result.d);
var data = JSON.parse(result.d).rows;
var grid = $("#tablegrid");
var i = 0;
for (i = 0; i < data.length; i++) {
grid.addRowData(i + 1, data[i]);
}
grid.setGridParam({ rowNum: 4, total: 3, page: 1, records: 5 }).trigger("reloadGrid");

}
});
}

======================

$("#tablegrid").jqGrid({
mtype: "GET",
datatype: "local",
colNames: ["id", "name"],
colModel: [
{ name: "id", index: "id", width: 55 },
{ name: "name", index: "name", width: 55}
],
pager : "#pager",
width : 600
}

https://docs.google.com/file/d/0B5tau-GpaqtCY01aT1hsUlFfc0k/edit?usp=sharing

rschandrastechblog