Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "CRUD" and then click OK
Step 2: Right click on your project select Manage NuGet Packages -> Search metro framework, orm lite -> Install

If you don't see the metro framework in your toolbox, you can view How to download and install metro framework
Step 3: Design metro form as below
Step 4: Create a student class to map data return from sql server
[Alias("Students")]
public class Student
{
[AutoIncrement]
public int StudentID { get; set; }
public string FullName { get; set; }
public string Birthday { get; set; }
public string Email { get; set; }
public string Address { get; set; }
public string ImageUrl { get; set; }
public bool Gender { get; set; }
}
Step 5: You should create a new database, then add a student table to your database
CREATE TABLE [dbo].[Students](
[StudentID] [int] IDENTITY(1,1) NOT NULL,
[FullName] [nvarchar](100) NULL,
[Birthday] [varchar](10) NULL,
[Gender] [bit] NULL,
[Email] [varchar](100) NULL,
[Address] [nvarchar](250) NULL,
[ImageUrl] [varchar](250) NULL,
CONSTRAINT [PK_Students] PRIMARY KEY CLUSTERED
(
[StudentID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
Step 6: Create an EntityState to manage objects state
public enum EntityState
{
Unchanged,
Added,
Changed,
Deleted
}
Step 7: Add a connection string to the App.config file
<configuration>
<connectionStrings>
<add name = "cn" connectionString="Data Source=.;Initial Catalog=dbstudent;User ID=sa;Password=123@qaz;" providerName="System.Data.SqlClient"/>
</connectionStrings>
</configuration>
Step 8: Add code to handle your form as below
using ServiceStack.OrmLite;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace CRUD
{
public partial class Form1 : MetroFramework.Forms.MetroForm
{
EntityState objState = EntityState.Unchanged;
public Form1()
{
InitializeComponent();
}
private void btnBrowse_Click(object sender, EventArgs e)
{
using (OpenFileDialog ofd = new OpenFileDialog() { Filter = "JPEG|*.jpg|PNG|*.png", ValidateNames = true })
{
if (ofd.ShowDialog() == DialogResult.OK)
{
//Load image to picture box
pic.Image = Image.FromFile(ofd.FileName);
Student obj = studentBindingSource.Current as Student;
if (obj != null)
obj.ImageUrl = ofd.FileName;
}
}
}
OrmLiteConnectionFactory dbFactory;
private void Form1_Load(object sender, EventArgs e)
{
try
{
dbFactory = new OrmLiteConnectionFactory(ConfigurationManager.ConnectionStrings["cn"].ConnectionString, SqlServerDialect.Provider);
using(var db = dbFactory.Open())
{
//Retrieve data from sql database
studentBindingSource.DataSource = db.Select<Student>();
Student obj = studentBindingSource.Current as Student;
if (obj != null)
{
if (!string.IsNullOrEmpty(obj.ImageUrl))
pic.Image = Image.FromFile(obj.ImageUrl);
}
}
}
catch(Exception ex)
{
MetroFramework.MetroMessageBox.Show(this, ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
pContainer.Enabled = false;
}
private void btnAdd_Click(object sender, EventArgs e)
{
objState = EntityState.Added;
pic.Image = null;
pContainer.Enabled = true;
//Add new data to binding source
studentBindingSource.Add(new Student());
studentBindingSource.MoveLast();
txtFullName.Focus();
}
private void btnEdit_Click(object sender, EventArgs e)
{
objState = EntityState.Changed;
pContainer.Enabled = true;
txtFullName.Focus();
}
private void btnDelete_Click(object sender, EventArgs e)
{
objState = EntityState.Deleted;
if(MetroFramework.MetroMessageBox.Show(this,"Are you sure want to delete this record?", "Message", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
Student obj = studentBindingSource.Current as Student;
if (obj != null)
{
using(var db = dbFactory.Open())
{
//Delete data from sql database, then remove data from data source
db.Delete<Student>(obj);
studentBindingSource.RemoveCurrent();
pContainer.Enabled = false;
pic.Image = null;
objState = EntityState.Unchanged;
}
}
}
}
private void metroGrid_CellClick(object sender, DataGridViewCellEventArgs e)
{
Student obj = studentBindingSource.Current as Student;
if (obj != null)
{
if (!string.IsNullOrEmpty(obj.ImageUrl))
pic.Image = Image.FromFile(obj.ImageUrl);
}
}
private void btnCancel_Click(object sender, EventArgs e)
{
pContainer.Enabled = false;
studentBindingSource.ResetBindings(false);
this.Form1_Load(sender, e);
}
private void btnSave_Click(object sender, EventArgs e)
{
try
{
studentBindingSource.EndEdit();
Student obj = studentBindingSource.Current as Student;
if (obj != null)
{
using(var db = dbFactory.Open())
{
//Save data to sql database
if (objState == EntityState.Added)
obj.StudentID = (int)db.Insert<Student>(obj, true);
else if (objState == EntityState.Changed)
db.Update<Student>(obj);
metroGrid.Refresh();
pContainer.Enabled = false;
objState = EntityState.Unchanged;
}
}
}
catch(Exception ex)
{
MetroFramework.MetroMessageBox.Show(this, ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
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