c#Winform窗体 自动生成EXCEL并可以插入数据

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;

using System.Windows.Forms;

using System.Data.OleDb;
using System.IO;
using System.Drawing;
using System.Linq;
using System.Text;

namespace EPAS.f06PreData//自己命名
{
public partial class frmSetThreshold : Form
{
public frmSetThreshold()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)//按钮一进行动态创建excel
{
try
{
if (File.Exists("E:\example.xls"))
File.Delete("E:\example.xls");
using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=example.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
conn.Open();
OleDbCommand cmd = new OleDbCommand("CREATE TABLE booksheet1 ([测项ID] varchar, [名字] varchar,[最大阈值] varchar,[最小阈值] varchar,[备注] varchar )", conn);
cmd.ExecuteNonQuery();
MessageBox.Show("创建excle成功");
}
}
catch (System.Exception )
{
MessageBox.Show("阈值.xls已存在！");
}
}
private void button2_Click(object sender, EventArgs e)//按钮二点击插入数据
{
if (textBox1.Text == "" || textBox2.Text == "" || textBox3.Text == "" || textBox4.Text == "" || textBox5.Text == "")
{
MessageBox.Show("输入值不能为空！");
}
else
{
string connstring = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=example.xls;Extended Properties='Excel 8.0;HDR=Yes'";//HDR=Yes表示第一行作为标题使用
OleDbConnection conn = new OleDbConnection(connstring);
string commandstring = "SELECT * FROM [booksheet1]";
OleDbDataAdapter adapter = new OleDbDataAdapter(commandstring, conn);
OleDbCommandBuilder cd = new OleDbCommandBuilder(adapter);
DataSet ds = new DataSet();
try
{
conn.Open();
adapter.Fill(ds, "ww");
DataRow new_row1 = ds.Tables["ww"].NewRow();
new_row1["测项ID"] = textBox1.Text;
new_row1["名字"] = textBox2.Text;
new_row1["最大阈值"] = textBox3.Text;
new_row1["最小阈值"] = textBox4.Text;
new_row1["备注"] = textBox5.Text;

ds.Tables["ww"].Rows.Add(new_row1);

adapter.Update(ds, "ww");
conn.Close();
MessageBox.Show("成功导入EXCEL!");
}
catch (System.Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}

}
}

//这趟封闭开发2017-2-16至2017-2-24  我写代码的能力一般，此次c#对winform窗体的控制多引用他人代码并加以修改。

引用窗体的图下次补上  没有来得及附图...