Code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Web;
using System.IO;
namespace WindowsApplication1
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
this.openFileDialog1.ShowDialog();
this.textBox1.Text = this.openFileDialog1.FileName;
}
private void button2_Click(object sender, EventArgs e)
{
string fileName = "";
fileName = this.textBox1.Text;
if (this.textBox1.Text != "")
{
try
{
string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + fileName + " ;Extended Properties=Excel 8.0";
System.Data.OleDb.OleDbConnection myConn = new System.Data.OleDb.OleDbConnection(strCon);
string strCom = " SELECT * FROM [punishCase$] ";
System.Data.OleDb.OleDbDataAdapter myCommand = new System.Data.OleDb.OleDbDataAdapter(strCom, myConn);
System.Data.DataTable dt = new System.Data.DataTable();
myCommand.Fill(dt);
this.dataGridView1.DataSource = dt;
this.label1.Text = myConn.State.ToString();
MessageBox.Show("导入成功");
}
catch
{
MessageBox.Show("请选择案件导入的EXCEL");
}
}
else
{
MessageBox.Show("请选择Excel文件");
}
}
private void button3_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "Export Excel File To";
saveFileDialog.ShowDialog();
Stream myStream;
myStream = saveFileDialog.OpenFile();
//StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0));
string str = "";
try
{
//写标题
for (int i = 0; i < dataGridView1.ColumnCount; i++)
{
if (i > 0)
{
str += "\t";
}
str += dataGridView1.Columns[i].HeaderText;
}
sw.WriteLine(str);
//写内容
for (int j = 0; j < dataGridView1.Rows.Count; j++)
{
string tempStr = "";
for (int k = 0; k < dataGridView1.Columns.Count; k++)
{
if (k > 0)
{
tempStr += "\t";
}
tempStr += dataGridView1.Rows[j].Cells[k].Value.ToString();
}
sw.WriteLine(tempStr);
}
sw.Close();
myStream.Close();
}
catch
{
}
finally
{
sw.Close();
myStream.Close();
}
}
}
}
