C# method for the update button

Question

1.00/5 (1 vote)

See more:

Dear All,

I have a WPF Project which is related to Customer Tracking System.
I need a method for updating my datagrid for Category table as follows:

In my User Interface, i have 3 textboxes respectively, CategoryID, CategoryName and Description and Save, Delete and Update button.

I am developing this Project via ADO.NET, so my methods need to be written considering ADO.NET.

I have a cs file named CategoryManager and i am developing my Save, Delete and Update methods in there. Please find my CategoryManager.cs file below. I need an update method in CategoryManager.cs for the update button in my user interface. I prefer, when i click the related row in datagrid, the values appear in the textboxes and ready to update.

I kindly request for your helps.

Kind Regards
Gokhan

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MyProjectSatis
{
    class CategoryManager
    {
        public static void AddNewItem(Category category)
        {
            FaturaEntities ent = new FaturaEntities();
            ent.Categories.Add(category);
            ent.SaveChanges();
        }

        public static List<Category> GetAllCategories()
        {
            FaturaEntities ent = new FaturaEntities();
            return ent.Categories.ToList();
        }

        public static void DeleteSelectedItem(Category category)
        {
            FaturaEntities ent = new FaturaEntities();
            Category c = ent.Categories.FirstOrDefault(x => x.CategoryID == category.CategoryID);

            ent.Categories.Remove(c);
            ent.SaveChanges();
        }
    }
}

Posted 15-Nov-15 20:45pm

gokhan572

Add a Solution

Comments

Krunal Rohit 16-Nov-15 3:02am

So your question is: How to update the entity ?

-KR

gokhan572 16-Nov-15 3:33am

Yes. Something like that. But need a method for it then i call it from the ui page if it is possible.
Thanks.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Mostafa Sakr · Accepted Answer · 2015-11-15T22:48:00

First you need to Get row data from grid or from method and bind('show') this data in your textboxs, dont forget to save ID in variable or disabled textbox

C#

public static Category Get(int id )
       {
           FaturaEntities ent = new FaturaEntities();
           return ent.Categories.Where(x=>x.id==id).FirstOrDefault();
       }

then to update you need this method

C#

public static void Update(Category category)
        {
            using (var dbCtx = new FaturaEntities ())
           {

              dbCtx.Entry(category).State = System.Data.Entity.EntityState.Modified;
              dbCtx.SaveChanges();
           }
        }