CRUD Operation Using Modal Dialog in MVC

8/13/2019 CRUD Operation Using Modal Dialog in MVC

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CRUD operation using Modal dialog in

ASP.NET MVC

In this article I am going to explain how to add, edit, delete and find [CRUD (Create, Retrieve, Update,

Delete)]records using razor view engine in ASP.NET MVC3 or above version. It will display modal dialog

if the JavaScript is turned on otherwise a simple view page, when we try to add and edit the records of

student.

Please follow the steps given below to create an application that allows user to add, edit, delete and find

records of student.

Open Microsoft Visual Studio 2010Select New ProjectSelect Webfrom the Installed Templates

Select ASP.NET MVC3 or MVC4 Web ApplicationEnter the project name Modal_CRUD_MVC in the

Name textboxClick OK.

After select the project you can see the following dialog box:

Select Emptyfrom the Select a template optionSelect Razorview engineClick OK.


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Add the following Modal classes (Studentand StudentContext) in your Model folder:

Studentclass represents the table structure in the database and StudentContextStudents property

represents the name of table and data of the students in the database.

publicclassStudent{

publicintStudentID { get; set; }publicstringName { get; set; }publicstringAge { get; set; }publicstringState { get; set; }publicstringCountry { get; set; }

}publicclassStudentContext: DbContext{

publicDbSet Students{


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get;set;

}}

Also include Entity framework reference in your project because in this application we are going to useentity framework code first model to add, edit, delete and find records from the database. To include

entity framework dll, follow these steps:

Go to ProjectManage NuGet PackagesEnter entity frameworkin the search textbox and search

online.

You will find latest version of Entity framework version.

You also have to configure your web.config file for the implementation of this project. Add the

connectionStringselement under configuration tag:


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Add a Controller in your project and edit the controller name as HomeControlleras shown in the figure

below:

After adding HomeController, add an Indexview into your project:


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Edit the Index view and add the following code as given below. Also include these files (jquery-

ui.min.css, jquery-1.7.1.min.js, jquery-ui-1.8.20.min.js) in your project.

@model IEnumerable@{

Layout = null;}

Index

$(document).ready(function() {

$.ajaxSetup({ cache: false});


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$("#openDialog").live("click", function(e) {

e.preventDefault();varurl = $(this).attr('href');

$("#dialog-edit").dialog({title: 'Add Student',autoOpen: false,resizable: false,height: 355,width: 400,show: { effect: 'drop', direction: "up"},modal: true,draggable: true,open: function(event, ui) {

$(this).load(url);},close: function(event, ui) {

$(this).dialog('close');}

});

$("#dialog-edit").dialog('open');returnfalse;

});

$(".editDialog").live("click", function(e) {varurl = $(this).attr('href');$("#dialog-edit").dialog({

title: 'Edit Customer',autoOpen: false,resizable: false,height: 355,width: 400,

show: { effect: 'drop', direction: "up"},modal: true,draggable: true,open: function(event, ui) {

$(this).load(url);

},close: function(event, ui) {


});

$("#dialog-edit").dialog('open');returnfalse;

});

$(".confirmDialog").live("click", function(e) {

varurl = $(this).attr('href');$("#dialog-confirm").dialog({

autoOpen: false,resizable: false,height: 170,width: 350,


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show: { effect: 'drop', direction: "up"},modal: true,draggable: true,buttons: {

"OK": function() {$(this).dialog("close");window.location = url;

},"Cancel": function() {

$(this).dialog("close");

}}

});$("#dialog-confirm").dialog('open');returnfalse;

});

$(".viewDialog").live("click", function(e) {

varurl = $(this).attr('href');$("#dialog-view").dialog({title: 'View Customer',autoOpen: false,resizable: false,height: 355,width: 400,show: { effect: 'drop', direction: "up"},modal: true,draggable: true,open: function(event, ui) {

$(this).load(url);

},

buttons: {"Close": function() {

$(this).dialog("close");

}},close: function(event, ui) {


});

$("#dialog-view").dialog('open');returnfalse;

});

$("#btncancel").live("click", function(e) {$("#dialog-edit").dialog('close');

});});


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@Html.ActionLink("Create New", "AddEditRecord", "Home", null, new{ @id ="openDialog"})

@Html.DisplayNameFor(model => model.Name)

@Html.DisplayNameFor(model => model.Age)

@Html.DisplayNameFor(model => model.State)

@Html.DisplayNameFor(model => model.Country)

@foreach(varitem inModel){

@Html.DisplayFor(modelItem => item.Name)

@Html.DisplayFor(modelItem => item.Age)

@Html.DisplayFor(modelItem => item.State)

@Html.DisplayFor(modelItem => item.Country)

@Html.ActionLink("Edit", "AddEditRecord", new{ id = item.StudentID}, new{ @class = "editDialog"})|

@Html.ActionLink("Details", "Details", new{ id = item.StudentID },new{ @class = "viewDialog"}) |

@Html.ActionLink("Delete", "DeleteRecord", new{ id = item.StudentID}, new{ @class = "confirmDialog"})

}

Are you sure to delete ?


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I have put all the code necessary to perform add, edit, delete and find records of the students in the

Indexview. In this project we do not have any Layout or Master page.

After including files in the project, your solution explorer might something look like this:

Add a partial view_StudentDatain ViewsHome folder.

Content folder base includes css

files.

Script folder includes two JavaScript

files.


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Edit the _StudentDatapartial view as below:

@model Modal_CRUD_MVC.Models.Student@using(Ajax.BeginForm("AddEditRecord", "Home", newAjaxOptions{ HttpMethod = "POST",UpdateTargetId = "studentDialog"})){

@Html.ValidationSummary(true)

Student@if(ViewBag.IsUpdate == true){

@Html.HiddenFor(model => model.StudentID)}

@Html.LabelFor(model => model.Name)

@Html.EditorFor(model => model.Name)@Html.ValidationMessageFor(model => model.Name)

@Html.LabelFor(model => model.Age)

@Html.EditorFor(model => model.Age)@Html.ValidationMessageFor(model => model.Age)

@Html.LabelFor(model => model.State)


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@Html.EditorFor(model => model.State)@Html.ValidationMessageFor(model => model.State)

@Html.LabelFor(model => model.Country)

@Html.EditorFor(model => model.Country)@Html.ValidationMessageFor(model => model.Country)

@if(ViewBag.IsUpdate == true){

}else{

}

}

Also add StudentDataview in the same folder ViewsHome. This view will response by the controller

to the browser if the JavaScript is turned off otherwise the above partial view will display in a modal

dialog to the user.

@model Modal_CRUD_MVC.Models.Student@using(Html.BeginForm("AddEditRecord", "Home")){

@Html.ValidationSummary(true)

Student@if(ViewBag.IsUpdate == true){

@Html.HiddenFor(model => model.StudentID)}

@Html.LabelFor(model => model.Name)

@Html.EditorFor(model => model.Name)@Html.ValidationMessageFor(model => model.Name)

@Html.LabelFor(model => model.Age)

@Html.EditorFor(model => model.Age)@Html.ValidationMessageFor(model => model.Age)


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@Html.LabelFor(model => model.State)

@Html.EditorFor(model => model.State)@Html.ValidationMessageFor(model => model.State)

@Html.LabelFor(model => model.Country)

@Html.EditorFor(model => model.Country)@Html.ValidationMessageFor(model => model.Country)

@if(ViewBag.IsUpdate == true){

}else{

}@Html.ActionLink("Back to List", "Index")

}

Add a partial view_StudentDetailsin ViewsHome folder.

Edit the _StudentDetailspartial view as below:

@model Modal_CRUD_MVC.Models.Student

Student


@Html.DisplayFor(model => model.Name)


@Html.DisplayFor(model => model.Age)


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@Html.DisplayFor(model => model.State)


@Html.DisplayFor(model => model.Country)

Add and Edit StudentDetailsin ViewsHome folder.

The purpose of adding StudentDetails view is same as I have explained above for StudentData view.

@model Modal_CRUD_MVC.Models.Student

@{Layout = null;

}

StudentDetails

Student


@Html.DisplayFor(model => model.Name)


@Html.DisplayFor(model => model.Age)


@Html.DisplayFor(model => model.State)


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@Html.DisplayFor(model => model.Country)

@Html.ActionLink("Edit", "Edit", new{ id = Model.StudentID }, new{ @class ="editDialog"}) |

@Html.ActionLink("Back to List", "Index")

I have finished Model and View portion. Now I am going to explain about the HomeControllerand its

Actionmethods which are necessary in order to run our application.

Indexaction returns a View along with the list of students:

publicclassHomeController: Controller{

StudentContextdb = newStudentContext();

publicActionResultIndex(){

return View(db.Students.ToList());}

}

Add the AddEditRecordaction with the parameter (id) which can be either null or not null. If the id

parameter is null it will return empty _StudentData or StudentData, partial view or View respectively

otherwise it will find the record of student on the basis of id and passes the student model to the view in

order to update the student details.

Here I am also creating a dynamic property ViewBag.IsUpdate to change the button type in view. If the

IsUpdate is true it will set button text as Update and if IsUpdate is false then it will be set as Save.

[HttpGet]publicActionResultAddEditRecord(int? id){

if(Request.IsAjaxRequest()){

if(id != null){

ViewBag.IsUpdate = true;Studentstudent = db.Students.Where(m => m.StudentID ==

id).FirstOrDefault();returnPartialView("_StudentData", student);

}ViewBag.IsUpdate = false;returnPartialView("_StudentData");


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}else{

if(id != null){

ViewBag.IsUpdate = true;Studentstudent = db.Students.Where(m => m.StudentID ==

id).FirstOrDefault();returnPartialView("StudentData", student);

}ViewBag.IsUpdate = false;returnView("StudentData");

}}

Add the AddEditRecordaction which is of HttpPosttype to add or update student record. If the cmd

contains Save it will add the record of student in the database otherwise update the data of student in

the database.

[HttpPost]publicActionResultAddEditRecord(Studentstudent, stringcmd){

if(ModelState.IsValid){

if(cmd == "Save"){

try{

db.Students.Add(student);db.SaveChanges();returnRedirectToAction("Index");

}catch{ }

}else{

try{

Studentstud = db.Students.Where(m => m.StudentID ==student.StudentID).FirstOrDefault();

if(stud != null){

stud.Name = student.Name;stud.Age = student.Age;stud.State = student.State;

stud.Country = student.Country;db.SaveChanges();}returnRedirectToAction("Index");

}catch{ }

}}

if(Request.IsAjaxRequest())


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{returnPartialView("_StudentData", student);

}else{

returnView("StudentData", student);}

}

To delete the record of students add the DeleteRecordaction in the HomeController. This will delete

the record of a student from the database on the basis of id.

publicActionResultDeleteRecord(intid){

Studentstudent = db.Students.Where(m => m.StudentID == id).FirstOrDefault();if(student != null){

try

{db.Students.Remove(student);db.SaveChanges();

}catch{ }

}returnRedirectToAction("Index");

}

To view the details of student, add the Detailsaction in your HomeController. This will display the

details of a student on the basis of id.

publicActionResultDetails(intid){

Studentstudent = db.Students.Where(m => m.StudentID == id).FirstOrDefault();if(student != null){

if (Request.IsAjaxRequest()){

returnPartialView("_StudentDetails", student);}else{

returnView("StudentDetails", student);}

}returnView("Index");}

Now both coding and design part is over. To test an application, run or debug your application:

I have added few records during coding. You can add student records by using Create Newoption.


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To edit records, just press edit link given for each students in a row.

If the JavaScript is turned off, you cannot use modal dialog to add and edit the records of students, then

in that case you can use StudentData view to add and edit the records.


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To delete the record of student, use Deletelink.

Thanks for reading this article. You can enter your valuable comments and suggestion to improve this

article in the comment box.

CRUD Operation Using Modal Dialog in MVC

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