Please enable Javascript to correctly display the contents on Dot Net Tricks!
 
Ready to master latest .NET, JavaScript framework and Mobile development skills?
Join our training programs and take your career to the next level!

Enhancing WebGrid with Insert Update and Delete Operations

Posted By : Shailendra Chauhan, 15 Jan 2013
Updated On : 11 Jun 2014
Total Views : 122,757   
Version Support : MVC4 & MVC3
 
Keywords : crud opeartions with in webgrid,grid view like insert update and delete in webgrid using jquery

Many developers want to do Insert, Update and Delete with in WebGrid like as GridView, but don't know how to do it. This article will help you to do the CRUD operations with in WebGrid.

Populating WebGrid

The Model

First of all design the customer model using Entity Framework database first approach as show below

CREATE TABLE [dbo].[Customer]
(
 [CustID] [int] IDENTITY(1,1) PRIMARY KEY,
 [Name] [varchar](100) NULL,
 [Address] [varchar](200) NULL,
 [ContactNo] [varchar](20) NULL,
)

Now design the model for querying the data from customer table and populating it to the GridView

public static class SortExtension
{
 public static IOrderedEnumerable OrderByWithDirection
 (this IEnumerable source,Func keySelector,bool descending)
 {
 return descending ? source.OrderByDescending(keySelector)
 : source.OrderBy(keySelector);
 }
 
 public static IOrderedQueryable OrderByWithDirection
 (this IQueryable source,Expression> keySelector,
 bool descending)
 {
 return descending ? source.OrderByDescending(keySelector)
 : source.OrderBy(keySelector);
 }
}

public class ModelServices : IDisposable
{
 private readonly TestDBEntities entities = new TestDBEntities();
 
 public IEnumerable<Customer> GetCustomerPage(int pageNumber, int pageSize, string sort, bool Dir)
 {
 if (pageNumber < 1)
 pageNumber = 1;
 
 if (sort == "name")
 return entities.Customers.OrderByWithDirection(x => x.Name, Dir)
 .Skip((pageNumber - 1) * pageSize)
 .Take(pageSize)
 .ToList();
 else if (sort == "address")
 return entities.Customers.OrderByWithDirection(x => x.Address, Dir)
 .Skip((pageNumber - 1) * pageSize)
 .Take(pageSize)
 .ToList();
 else if (sort == "contactno")
 return entities.Customers.OrderByWithDirection(x => x.ContactNo, Dir)
 .Skip((pageNumber - 1) * pageSize)
 .Take(pageSize)
 .ToList();
 else
 return entities.Customers.OrderByWithDirection(x => x.CustID, Dir)
 .Skip((pageNumber - 1) * pageSize)
 .Take(pageSize)
 .ToList();
 }
 public int CountCustomer()
 {
 return entities.Customers.Count();
 }
 
 public void Dispose()
 {
 entities.Dispose();
 }
}

public class PagedCustomerModel
{
 public int TotalRows { get; set; }
 public IEnumerable<Customer> Customer { get; set; }
 public int PageSize { get; set; }
}

The View

Now design the view based on the above developed model as show below

@model Mvc4_WebGrid_CRUD.Models.PagedCustomerModel
@{
 ViewBag.Title = "WebGrid CRUD Operations";
 WebGrid grid = new WebGrid(rowsPerPage: Model.PageSize);
 grid.Bind(Model.Customer,autoSortAndPage: false,rowCount: Model.TotalRows
 ); 
}

<div id="divmsg" style="color: green; font-weight: bold"></div>
<a href="#" class="add">Add New</a>
<br />
<br />
@grid.GetHtml(
 htmlAttributes: new { id = "grid" },
 fillEmptyRows: false,
 mode: WebGridPagerModes.All,
 firstText: "<< First",
 previousText: "< Prev",
 nextText: "Next >",
 lastText: "Last >>",
 columns: new[] {
 grid.Column("CustID",header: "ID", canSort: false),
 
 grid.Column(header: "Name",format: @<span> <span id="spanName_@item.CustID">@item.Name</span> @Html.TextBox("Name_"+(int)item.CustID,(string)item.Name,new{@style="display:none"})</span>),
 
 grid.Column(header: "Address",format: @<span> <span id="spanAddress_@item.CustID">@item.Address</span> @Html.TextBox("Address_"+(int)item.CustID,(string)item.Address,new{@style="display:none"})</span>),
 
 grid.Column(header: "Contact No",format: @<span> <span id="spanContactNo_@item.CustID">@item.ContactNo</span> @Html.TextBox("ContactNo_"+(int)item.CustID,(string)item.ContactNo,new{@style="display:none"})</span>),
 
 grid.Column(header: "Action",format:@<text> <a href="#" id="Edit_@item.CustID" class="edit">Edit</a><a href="#" id="Update_@item.CustID" style="display:none" class="update">Update</a><a href="#" id="Cancel_@item.CustID" style="display:none" class="cancel">Cancel</a><a href="#" id="Delete_@item.CustID" class="delete">Delete</a></text>)
})

The Controller

Now, let's see how to write the code for populating the webgrid using model class and methods.

public class HomeController : Controller
{
 ModelServices mobjModel = new ModelServices();
 
 public ActionResult WebGridCRUD(int page = 1, string sort = "custid", string sortDir = "ASC")
 {
 const int pageSize = 10;
 var totalRows = mobjModel.CountCustomer();
 
 bool Dir = sortDir.Equals("desc", StringComparison.CurrentCultureIgnoreCase) ? true : false;
 
 var customer = mobjModel.GetCustomerPage(page, pageSize, sort, Dir);
 var data = new PagedCustomerModel()
 {
 TotalRows = totalRows,
 PageSize = pageSize,
 Customer = customer
 };
 return View(data);
 }
}

Insert Operation

The Model

public bool SaveCustomer(string name, string address, string contactno)
{
 try
 {
 Customer cust = new Customer();
 cust.Name = name;
 cust.Address = address;
 cust.ContactNo = contactno;
 
 entities.Customers.Add(cust);
 entities.SaveChanges();
 return true;
 }
 catch
 {
 return false;
 }
}

The View

<script type="text/javascript">
$(".add").live("click", function () {
 
 var existrow = $('.save').length;
 if (existrow == 0) {
 var index = $("#grid tbody tr").length + 1;
 
 var Name = "Name_" + index;
 var Address = "Address_" + index;
 var ContactNo = "ContactNo_" + index;
 var Save = "Save_" + index;
 var Cancel = "Cancel_" + index;
 
 var tr = '<tr class="alternate-row"><td></td><td><span> <input id="' + Name + '" type="text" /></span></td>' +
 '<td><span> <input id="' + Address + '" type="text" /></span></td>' +
 '<td><span> <input id="' + ContactNo + '" type="text" /></span></td>' +
 '<td> <a href="#" id="' + Save + '" class="save">Save</a><a href="#" id="' + Cancel + '" class="icancel">Cancel</a></td>' +
 '</tr>';
 
 $("#grid tbody").append(tr);
 }
 else {
 alert('First Save your previous record !!');
 }
 
 });
 
$(".icancel").live("click", function () {
 var flag = confirm('Are you sure to cancel');
 if (flag) {
 $(this).parents("tr").remove();
 }
});
 
$(".save").live("click", function () {
 var id = $("#grid tbody tr").length;
 var Name = $("#Name_" + id).val();
 var Address = $("#Address_" + id).val();
 var ContactNo = $("#ContactNo_" + id).val();
 
 if (id != "") {
 $.ajax({
 type: "GET",
 contentType: "application/json; charset=utf-8",
 url: '@Url.Action("SaveRecord", "Home")',
 data: { "name": Name, "address": Address, "contactno": ContactNo },
 dataType: "json",
 beforeSend: function () { },
 success: function (data) {
 if (data.result == true) {
 $("#divmsg").html("Record has been saved successfully !!");
 setTimeout(function () { window.location.replace("WebGridCRUD"); }, 2000);
 }
 else {
 alert('There is some error');
 }
 }
 });
 }
});
<script>

The Controller

[HttpGet]
public JsonResult SaveRecord(string name, string address, string contactno)
{
 bool result = false;
 try
 {
 result = mobjModel.SaveCustomer(name, address, contactno);
 }
 catch (Exception ex)
 {
 }
 return Json(new { result }, JsonRequestBehavior.AllowGet);
}

How it works..

Update Operation

The Model

public bool UpdateCustomer(int id, string name, string address, string contactno)
{
 try
 {
 var cust = (from tbl in entities.Customers
 where tbl.CustID == id
 select tbl).FirstOrDefault();
 cust.Name = name;
 cust.Address = address;
 cust.ContactNo = contactno;
 
 entities.SaveChanges();
 return true;
 }
 catch
 {
 return false;
 }
}

The View

<script type="text/javascript">
$(".edit").live("click", function () {
 var str = $(this).attr("id").split("_");
 id = str[1];
 
 var Name = "#Name_" + id;
 var spanName = "#spanName_" + id;
 var Address = "#Address_" + id;
 var spanAddress = "#spanAddress_" + id;
 var ContactNo = "#ContactNo_" + id;
 var spanContactNo = "#spanContactNo_" + id;
 
 $(Name).show();
 $(spanName).hide();
 $(Address).show();
 $(spanAddress).hide();
 $(ContactNo).show();
 $(spanContactNo).hide();
 
 $(this).hide();
 $("#Update_" + id).show();
 $("#Cancel_" + id).show();
});

$(".update").live("click", function () {
 var str = $(this).attr("id").split("_");
 id = str[1];
 
 var Name = $("#Name_" + id).val();
 var spanName = $("#spanName_" + id).val();
 var Address = $("#Address_" + id).val();
 var spanAddress = $("#spanAddress_" + id).val();
 var ContactNo = $("#ContactNo_" + id).val();
 var spanContactNo = $("#spanContactNo_" + id).val();
 
 if (id != "") {
 $.ajax({
 type: "GET",
 contentType: "application/json; charset=utf-8",
 url: '@Url.Action("UpdateRecord", "Home")',
 data: { "id": id, "name": Name, "address": Address, "contactno": ContactNo },
 dataType: "json",
 beforeSend: function () {//alert(id);
 },
 success: function (data) {
 if (data.result == true) {
 $("#Update_" + id).hide();
 $("#Cancel_" + id).hide();
 $("#Edit_" + id).show();
 
 var Name = "#Name_" + id;
 var spanName = "#spanName_" + id;
 var Address = "#Address_" + id;
 var spanAddress = "#spanAddress_" + id;
 var ContactNo = "#ContactNo_" + id;
 var spanContactNo = "#spanContactNo_" + id;
 
 $(Name).hide();
 $(spanName).show();
 $(Address).hide();
 $(spanAddress).show();
 $(ContactNo).hide();
 $(spanContactNo).show();
 
 $(spanName).text($(Name).val());
 $(spanAddress).text($(Address).val());
 $(spanContactNo).text($(ContactNo).val());
 }
 else {
 alert('There is some error');
 }
 }
 });
 }
});

<script>

The Controller

[HttpGet]
public JsonResult UpdateRecord(int id, string name, string address, string contactno)
{
 bool result = false;
 try
 {
 result = mobjModel.UpdateCustomer(id, name, address, contactno);
 
 }
 catch (Exception ex)
 {
 }
 return Json(new { result }, JsonRequestBehavior.AllowGet);
}

How it works..

Delete Operation

The Model

public bool DeleteCustomer(int id)
{
 try
 {
 var cust = (from tbl in entities.Customers
 where tbl.CustID == id
 select tbl).FirstOrDefault();
 
 entities.Customers.Remove(cust);
 entities.SaveChanges();
 return true;
 }
 catch
 {
 return false;
 }
}

The View

<script type="text/javascript">
$(".delete").live("click", function () {
 var str = $(this).attr("id").split("_");
 id = str[1];
 
 var flag = confirm('Are you sure to delete ??');
 if (id != "" && flag) {
 $.ajax({
 type: "GET",
 contentType: "application/json; charset=utf-8",
 url: '@Url.Action("DeleteRecord", "Home")',
 data: { "id": id },
 dataType: "json",
 beforeSend: function () { },
 success: function (data) {
 if (data.result == true) {
 $("#Update_" + id).parents("tr").remove();
 }
 else {
 alert('There is some error');
 }
 }
 });
 }
});
<script>

The Controller

public bool DeleteCustomer(int id)
{
 try
 {
 var cust = (from tbl in entities.Customers
 where tbl.CustID == id
 select tbl).FirstOrDefault();
 
 entities.Customers.Remove(cust);
 entities.SaveChanges();
 return true;
 }
 catch
 {
 return false;
 }
}

How it works..

What do you think?

I hope you will enjoy the tricks while programming with MVC Razor. I would like to have feedback from my blog readers. Your valuable feedback, question, or comments about this article are always welcome.


 
Recommended Articles!
 
About the Author
Hey! I'm Shailendra Chauhan author, developer with more than 5 years of hand over Microsoft .NET technologies. I am a .NET Consultant, founder & chief editor of www.dotnet-tricks.com and www.dotnetinterviewtricks.com. I am author of books ASP.NET MVC Interview Questions and Answers & LINQ Interview Questions and Answers.
I love to work with web applications and mobile apps using Microsoft technology including ASP.NET, MVC, C#, SQL Server, WCF, Web API, Entity Framework,Cloud Computing, Windows Azure, jQuery, jQuery Mobile, Knockout.js, Angular.js and many more web technologies. More...
 
Free .NET Interview Books
 
Browse By Category
Learn In Hindi
 
 
Like us on Facebook