usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Configuration;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceWindowsFormsAppADO.NET{
publicpartialclassForm1 : Form    {
Calorimeter1Entitiesdb=newCalorimeter1Entities();
publicForm1()
        {
InitializeComponent();
        }
privatevoidForm1_Load(objectsender, EventArgse)
        {
using (vardb=newCalorimeter1Entities())
            {
tableNumbers1BindingSource.DataSource=db.Table_Numbers1.ToList();
            }
        }
//添加privatevoidbutton1_Click(objectsender, EventArgse)
        {
using(Form2form2=newForm2(null))
            {
form2.ShowDialog();
using (vardb=newCalorimeter1Entities())
                    {
tableNumbers1BindingSource.DataSource=db.Table_Numbers1.ToList();
                    }
            }
        }
//刷新privatevoidbutton2_Click(objectsender, EventArgse)
        {
using (vardb=newCalorimeter1Entities())
            {
tableNumbers1BindingSource.DataSource=db.Table_Numbers1.ToList();
            }
        }
//编辑privatevoidbutton3_Click(objectsender, EventArgse)
        {
using (Form2form2=newForm2(tableNumbers1BindingSource.CurrentasTable_Numbers1))
            {
form2.ShowDialog();
using (vardb=newCalorimeter1Entities())
                {
tableNumbers1BindingSource.DataSource=db.Table_Numbers1.ToList();
                }
            }
        }
//删除privatevoidbutton4_Click(objectsender, EventArgse)
        {
using(vardb=newCalorimeter1Entities())
            {
//int i = dataGridView1.SelectedRows.Count;tableNumbers1BindingSource.DataSource=db.Table_Numbers1.ToList();
if (tableNumbers1BindingSource.Current!=null)
                {
if (MessageBox.Show("你确定要删除这条数据吗?", "Message", MessageBoxButtons.YesNo, MessageBoxIcon.Question) ==DialogResult.Yes)
                    {
db.Table_Numbers1.Remove(tableNumbers1BindingSource.CurrentasTable_Numbers1);
tableNumbers1BindingSource.RemoveCurrent();
db.SaveChanges();
                    }
                }
            }
        }
privatevoiddataGridView1_RowPostPaint(objectsender, DataGridViewRowPostPaintEventArgse)
        {
try            {
//添加行号 SolidBrushv_SolidBrush=newSolidBrush(dataGridView1.RowHeadersDefaultCellStyle.ForeColor);
intv_LineNo=0;
v_LineNo=e.RowIndex+1;
stringv_Line=v_LineNo.ToString();
e.Graphics.DrawString(v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X+15, e.RowBounds.Location.Y+5);
            }
catch (Exceptionex)
            {
MessageBox.Show("添加行号时发生错误，错误信息："+ex.Message, "操作失败");
            }
        }
    }
}

usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceWindowsFormsAppADO.NET{
publicpartialclassForm2 : Form    {
Calorimeter1Entitiesdb=newCalorimeter1Entities();
publicForm2(Table_Numbers1obj)
        {
InitializeComponent();
if(obj==null)
            {
tableNumbers1BindingSource.DataSource=newTable_Numbers1();
db.Table_Numbers1.Add(tableNumbers1BindingSource.CurrentasTable_Numbers1);
            }
else            {
tableNumbers1BindingSource.DataSource=obj;
db.Table_Numbers1.Attach(tableNumbers1BindingSource.CurrentasTable_Numbers1);
            }
        }
privatevoidForm2_FormClosing(objectsender, FormClosingEventArgse)
        {
if (DialogResult==DialogResult.OK)
            {
db.SaveChanges();
e.Cancel=false;
            }
e.Cancel=false;
        }
    }
}