ExportData.cs
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using System;
using System.IO;
using System.Data;
using System.Data.OleDb;
using Excel = Microsoft.Office.Interop.Excel;
using System.Windows.Forms;
namespace ExcelHelper
{
public class ExportData
{
static StreamWriter writer = null;
/// <summary>
/// 导入记事本
/// </summary>
/// <param name="lv">ListView</param>
public static void SaveToNotePad(ListView lv)
{
#region
FileStream outputfile = null; // 写文件
SaveFileDialog saveDlg = new SaveFileDialog();
saveDlg.DefaultExt = "xls";
saveDlg.Filter = "文本文件(*.txt)|*.txt|文本文件(*.ini)|*.ini|所有文件(*.*)|*.*";
saveDlg.Title = "文件另存为";
try
{
if (saveDlg.ShowDialog() == DialogResult.OK)
{
outputfile = new FileStream(saveDlg.FileName, FileMode.OpenOrCreate, FileAccess.Write);
writer = new StreamWriter(outputfile);
writer.BaseStream.Seek(0, SeekOrigin.End);
for (int i = 0; i < lv.Items.Count; i++)
{
DoWrite(lv.Columns[0].Text + ":" + lv.Items[i].Text);
for (int j = 1; j < lv.Columns.Count; j++)
{
DoWrite(lv.Columns[j].Text + ":" + lv.Items[i].SubItems[j].Text);
}
DoWrite("--------");
}
writer.Close();
MessageBox.Show("已将数据成功导入记事本：" + saveDlg.FileName + " 中！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
outputfile = null;
writer = null;
saveDlg.Dispose();
}
#endregion
}
/// <summary>
/// 导入记事本
/// </summary>
/// <param name="dv">DataGridView</param>
public static void SaveToNotePad(DataGridView dv)
{
#region
//if (File.Exists(filepath))
//{
// Response.Write("<script>(confirm('文件存在！是不是要替换？');</script>");
//}
FileStream outputfile = null; // 写文件
SaveFileDialog saveDlg = new SaveFileDialog();
saveDlg.DefaultExt = "xls";
saveDlg.Filter = "文本文件(*.txt)|*.txt|文本文件(*.ini)|*.ini|所有文件(*.*)|*.*";
saveDlg.Title = "文件另存为";
try
{
if (saveDlg.ShowDialog() == DialogResult.OK)
{
if (File.Exists(saveDlg.FileName)) File.Delete(saveDlg.FileName);
outputfile = new FileStream(saveDlg.FileName, FileMode.Create, FileAccess.Write);//OpenOrCreate
writer = new StreamWriter(outputfile);
writer.BaseStream.Seek(0, SeekOrigin.End);
for (int i = 0; i < dv.RowCount; i++)
{
for (int j = 0; j < dv.Columns.Count; j++)
{
DoWrite(dv.Columns[j].Name.ToString() + ":" + dv.Rows[i].Cells[j].Value.ToString());
}
DoWrite("--------");
}
writer.Close();
MessageBox.Show("已将数据成功导入记事本：" + saveDlg.FileName + " 中！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
outputfile = null;
writer = null;
saveDlg.Dispose();
}
#endregion
}
/// <summary>
/// 11.5,Writed by Fufu
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public static bool SaveToTxt(string text)
{
FileStream outputfile = null; // 写文件
SaveFileDialog saveDlg = new SaveFileDialog();
saveDlg.DefaultExt = "xls";
saveDlg.Filter = "文本文件(*.txt)|*.txt|文本文件(*.ini)|*.ini|所有文件(*.*)|*.*";
saveDlg.Title = "文件另存为";
try
{
if (saveDlg.ShowDialog() == DialogResult.OK)
{
if (File.Exists(saveDlg.FileName)) File.Delete(saveDlg.FileName);
outputfile = new FileStream(saveDlg.FileName, FileMode.Create, FileAccess.Write);//OpenOrCreate
writer = new StreamWriter(outputfile);
writer.BaseStream.Seek(0, SeekOrigin.End);
writer.Write(text);
writer.Close();
//MessageBox.Show("已将数据成功导入记事本：" + saveDlg.FileName + " 中！");
return true;
}
}
catch (Exception ex)
{
//MessageBox.Show(ex.ToString());
outputfile = null;
writer = null;
saveDlg.Dispose();
return false;
}
return false;
}
public static void DoWrite(String line)
{
line += "\r\n"; // 加上换行符
byte[] binfo = new System.Text.UTF8Encoding(true).GetBytes(line);
char[] info = new System.Text.UTF8Encoding(true).GetChars(binfo);
writer.Write(info, 0, info.Length);//writer.WriteLine(line);
writer.Flush();
}
/// <summary>
/// 以操作Excel控件的方式将DataGridView数据导出到Excel add by sunny 2007/1/18
/// </summary >
/// <param name= "GridView " >DataGridView对象 </param >
/// <param name= "strExcelFile " >Excel文件名 </param >
/// <param name= "strError " >out参数，返回出错信息 </param >
/// <returns >
/// -1 出错
/// 0 成功
/// </returns >
public static int DataGridViewToExcel(System.Windows.Forms.DataGridView GridView)
{
#region
int nRet = 0;
SaveFileDialog saveDlg1 = new SaveFileDialog();
saveDlg1.DefaultExt = "xls";
saveDlg1.Filter = "Microsoft Office Excel文件(*.xls)|*.xls|所有文件(*.*)|*.*";
saveDlg1.Title = "文件另存为";//saveDlg1.FileName
//saveDlg1.InitialDirectory = Directory.GetCurrentDirectory();
//if (saveDlg1.ShowDialog() == DialogResult.Cancel) return nRet;
if (saveDlg1.ShowDialog() == DialogResult.Cancel) return -1;
Excel.Application xlApp = new Excel.Application();
Excel.Workbooks workbooks = xlApp.Workbooks;
Excel.Workbook workbook = workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);
Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
try
{
//~~
// 写字段名
for (int i = 0; i < GridView.Columns.Count; i++)
{
worksheet.Cells[1, i + 1] = GridView.Columns[i].HeaderText.ToString();
}
// 写记录
for (int i = 0; i < GridView.Rows.Count; i++)
{
for (int j = 0; j < GridView.Columns.Count; j++)
{
//Fu_我的很多dgv里面都是复杂类，无法用这条语句导出
//worksheet.Cells[i + 2, j + 1] = GridView.Rows[i].Cells[j].Value.ToString();
//Fu_11.5_重写，获取格式化后的值
//worksheet.Cells[i + 2, j + 1] = GridView.Rows[i].Cells[j].EditedFormattedValue == null ? "" : GridView.Rows[i].Cells[j].EditedFormattedValue.ToString();
string value = GridView.Rows[i].Cells[j].EditedFormattedValue == null ? "" : GridView.Rows[i].Cells[j].EditedFormattedValue.ToString();
if (value.Length > 11)
{
value = "'" + value;
}
worksheet.Cells[i + 2, j + 1] = value;
}
}
worksheet.Columns.EntireColumn.AutoFit();//自动适应每列的宽度 add by sunny.li
//下面这句会报错
//Excel.Range rg = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, GridView.Columns.Count]);
//Fu_csdn上的写法 ， 膜拜大神...
Excel.Range rg = worksheet.Range[worksheet.Cells[1, 1], worksheet.Cells[1, GridView.Columns.Count]];
rg.Font.Bold = true;
workbook.Saved = true;
workbook.SaveCopyAs(saveDlg1.FileName);
// 关掉内存中的进程
// xlApp.Quit();
nRet = 0;
}
catch (Exception ex)
{
//strError = ex.ToString();
//MessageBox.Show(ex.ToString());
nRet = -1;
}
return nRet;
#endregion
}
/// <summary>
/// 读取Excel文件，将内容存储在DataSet中
/// </summary>
/// <param name="opnFileName">带路径的Excel文件名</param>
/// <returns>DataSet</returns>
public static DataSet ExcelToDataSet(string TableName)
{
#region
string strExcel = "";
OpenFileDialog openDlg1 = new OpenFileDialog();
openDlg1.DefaultExt = "xls";
openDlg1.Filter = "Microsoft Office Excel文件(*.xls)|*.xls|所有文件(*.*)|*.*";
openDlg1.Title = "打开";
//saveDlg1.InitialDirectory = Directory.GetCurrentDirectory();
if (openDlg1.ShowDialog() == DialogResult.Cancel) return null;
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + openDlg1.FileName + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1\"";
OleDbConnection conn = new OleDbConnection(strConn);
OleDbDataAdapter da = null;
DataSet ds = new DataSet();
strExcel = "select * from [sheet1$]";
//strExcel = string.Format("select * from [{0}$]", "sheet1");
try
{
da = new OleDbDataAdapter(strExcel, strConn);
da.Fill(ds, TableName);
//用bcp导入数据
//using (System.Data.SqlClient.SqlBulkCopy bcp = new System.Data.SqlClient.SqlBulkCopy(Login.Cn()))
//{
// //bcp.SqlRowsCopied += new System.Data.SqlClient.SqlRowsCopiedEventHandler(bcp_SqlRowsCopied);
// bcp.BatchSize = 100;//每次传输的行数
// bcp.NotifyAfter = 100;//进度提示的行数
// bcp.DestinationTableName = TableName;//目标表
// bcp.WriteToServer(ds.Tables[0]);
//}
return ds;
}
catch (Exception ex)
{
MessageBox.Show("导入出错：" + ex, "错误信息");
return ds;
}
finally
{
conn.Close();
conn.Dispose();
}
#endregion
}
////进度显示
//void bcp_SqlRowsCopied(object sender, System.Data.SqlClient.SqlRowsCopiedEventArgs e)
//{
// this.Text = e.RowsCopied.ToString();
// this.Update();
//}
/// <summary>
/// 直接导出Sql表数据到excel --用excel的QueryTable进行批量数据的导入代码
/// </summary>
/// <param name="connectionString">连接字符串</param>
/// <param name="sql">查询语句</param>
/// <param name="fileName">文件名</param>
/// <param name="sheetName">表名</param>
/// <returns>真假值</returns>
//public static bool SQLDataToExcel(string connectionString, string sql, string fileName, string sheetName)
//{
// #region
// //SQLDataToExcel("Provider=SQLOLEDB.1;sever=localhost;uid=sa;password=123;database=autowarehouse;",
// //"select * from tblmaterialno", @"c:\testOle.xls", "tblmaterialno");
// Excel.Application app = new Excel.ApplicationClass();
// Excel.Workbook wb = (Excel.WorkbookClass)app.Workbooks.Add(Missing.Value);
// Excel.Worksheet ws = wb.Worksheets.Add(Missing.Value, Missing.Value, Missing.Value, Missing.Value) as Excel.Worksheet;
// ws.Name = sheetName;
// try
// {
// Excel.QueryTable qt = ws.QueryTables.Add("OLEDB;" + connectionString,
// ws.get_Range("A1", Missing.Value), sql);
// qt.Refresh(false);//是否异步查询
// }
// catch (Exception ex)
// {
// string str = ex.Message;
// }
// finally
// {
// wb.Saved = true;
// wb.SaveCopyAs(fileName);//保存
// app.Quit();//关闭进程
// }
// return true;
// #endregion
//}
}
}