/// <summary>
/// Excel文件导入导出类
/// 需引用Microsoft Excel 11.0 Object Library
/// </summary>
public class ExcelIO
{
private static System.Windows.Forms.DataGridView gridView;
private static System.Windows.Forms.ToolStripProgressBar toolStripProgressBar1;
private static Timer time;
private static DataSet objSet = new DataSet();
private static DataSet outSet = new DataSet();
private static SaveFileDialog saveFileDialog = new SaveFileDialog();
private static SaveFileDialog saveFileDialog2 = new SaveFileDialog();
private static OpenFileDialog openFileDialog = new OpenFileDialog();
public static System.Windows.Forms.DataGridView _gridView
{
get { return gridView; }
set { gridView = value;}
}
public static System.Windows.Forms.ToolStripProgressBar _toolStripProgressBar1
{
get { return toolStripProgressBar1; }
set { toolStripProgressBar1 = value;}
}
/// <summary>
/// 打开窗口选中的文件地址
/// </summary>
public static string FileName
{
get { return openFileDialog.FileName; }
}
public static Timer _time
{
get { return time; }
set { time = value;}
}
public static DataSet _objSet
{
get { return objSet; }
set { objSet.Clear(); objSet = value; }
}
public static DataSet _outSet
{
get { return outSet; }
set { outSet.Clear(); outSet = value; }
}
/// <summary>
/// 导入EXCEL到DataSet
/// </summary>
public static void ImportExcel()
{
openFileDialog.Filter = "Execl files (*.xls)|*.xls";
openFileDialog.FilterIndex = 0;
openFileDialog.RestoreDirectory = true;
openFileDialog.Title = "导入文件保存路径";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
string strName = openFileDialog.FileName;
toolStripProgressBar1.Visible = true;
System.Reflection.Missing miss = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Excel.ApplicationClass excel = new Microsoft.Office.Interop.Excel.ApplicationClass();
if (excel == null)
{
MessageBox.Show("EXCEL无法启动！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
Microsoft.Office.Interop.Excel.Workbook workbook;
try
{
workbook = excel.Workbooks.Open(strName, 0, false, 5, "", "", false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows,
"", true, false, 0, true, 1, 0);
}
catch
{
MessageBox.Show("Excel文件处于打开状态，请保存关闭！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//获得所有Sheet名称
int n = workbook.Worksheets.Count;
string[] SheetSet = new string[n];
System.Collections.ArrayList al = new System.Collections.ArrayList();
for (int i = 1; i <= n; i++)
{
SheetSet[i - 1] = ((Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[i]).Name;
}
//释放Excel相关对象
workbook.Close(null, null, null);
excel.Quit();
if (workbook != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
workbook = null;
}
if (excel != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
excel = null;
}
GC.Collect();
//把EXCEL导入到DataSet
DataSet ds = new DataSet();
string connStr = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + strName + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";
using (OleDbConnection conn = new OleDbConnection(connStr))
{
conn.Open();
OleDbDataAdapter da;
for (int i = 1; i <= n; i++)
{
string sql = "select * from [" + SheetSet[i - 1] + "$] ";
da = new OleDbDataAdapter(sql, conn);
da.Fill(ds, SheetSet[i - 1]);
da.Dispose();
toolStripProgressBar1.Value += 100 / n;
}
conn.Close();
conn.Dispose();
}
toolStripProgressBar1.Value = 0;
toolStripProgressBar1.Visible = false;
outSet = ds;
}
else
{
openFileDialog.FileName = "";
}
}
/// <summary>
/// 导出当前页DataGridView中的数据到EXcel中
/// </summary>
public static void ExportTOExcel()
{
if (gridView.Rows.Count == 0)
{
MessageBox.Show("没有数据可供导出！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "导出文件保存路径";
saveFileDialog.ShowDialog();
string strName = saveFileDialog.FileName;
if (strName.Length != 0)
{
toolStripProgressBar1.Visible = true;
System.Reflection.Missing miss = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Excel.ApplicationClass excel = new Microsoft.Office.Interop.Excel.ApplicationClass();
excel.Application.Workbooks.Add(true); ;
excel.Visible = false;//若是true，则在导出的时候会显示EXcel界面。
if (excel == null)
{
MessageBox.Show("EXCEL无法启动！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
Microsoft.Office.Interop.Excel.Workbooks books = (Microsoft.Office.Interop.Excel.Workbooks)excel.Workbooks;
Microsoft.Office.Interop.Excel.Workbook book = (Microsoft.Office.Interop.Excel.Workbook)(books.Add(miss));
Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.ActiveSheet;
sheet.Name = "test";
//生成字段名称
for (int i = 0; i < gridView.ColumnCount; i++)
{
excel.Cells[1, i + 1] = gridView.Columns[i].HeaderText.ToString();
}
//填充数据
int rowc = gridView.RowCount;
if (!gridView.ColumnHeadersVisible)
{
rowc -= 1;
}
for (int i = 0; i < rowc; i++)
{
for (int j = 0; j < gridView.ColumnCount; j++)
{
if (gridView[j, i].Value == typeof(string))
{
excel.Cells[i + 2, j + 1] = "" + gridView[i, j].Value.ToString();
}
else
{
excel.Cells[i + 2, j + 1] = gridView[j, i].Value.ToString();
}
}
toolStripProgressBar1.Value += 100 / gridView.RowCount;
}
sheet.SaveAs(strName, miss, miss, miss, miss, miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss);
book.Close(false, miss, miss);
books.Close();
excel.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
System.Runtime.InteropServices.Marshal.ReleaseComObject(books);
System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
GC.Collect();
MessageBox.Show("数据已经成功导出到：" + saveFileDialog.FileName.ToString(), "导出完成", MessageBoxButtons.OK, MessageBoxIcon.Information);
toolStripProgressBar1.Value = 0;
toolStripProgressBar1.Visible = false;
}
}
}
//-------------------------------------------------------------------------------------------------------------------------------------
/// <summary>
/// 导出整个DataGridView中的数据到Excel中
/// </summary>
public static void ExportTOExcel2()
{
if (gridView.Rows.Count == 0)
{
MessageBox.Show("没有数据可供导出！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
saveFileDialog2.Filter = "Execl files (*.xls)|*.xls";
saveFileDialog2.FilterIndex = 0;
saveFileDialog2.RestoreDirectory = true;
//saveFileDialog2.CreatePrompt = true;
saveFileDialog2.Title = "导出文件保存路径";
saveFileDialog2.FileName = null;
saveFileDialog2.ShowDialog();
string FileName = saveFileDialog2.FileName;
if (FileName.Length != 0)
{
toolStripProgressBar1.Visible = true;
System.Data.DataTable dt = objSet.Tables[0];
FileStream objFileStream;
StreamWriter objStreamWriter;
string strLine = "";
objFileStream = new FileStream(FileName, FileMode.OpenOrCreate, FileAccess.Write);
objStreamWriter = new StreamWriter(objFileStream, System.Text.Encoding.Unicode);
toolStripProgressBar1.Value = 0;
for (int i = 0; i < dt.Columns.Count; i++)
{
strLine = strLine + dt.Columns[i].ColumnName.ToString() + Convert.ToChar(9);
}
objStreamWriter.WriteLine(strLine);
strLine = "";
for (int i = 0; i < dt.Rows.Count; i++)
{
strLine = strLine + (i + 1) + Convert.ToChar(9);
for (int j = 1; j < dt.Columns.Count; j++)
{
strLine = strLine + dt.Rows[i][j].ToString() + Convert.ToChar(9);
}
objStreamWriter.WriteLine(strLine);
toolStripProgressBar1.Value += 100 / dt.Rows.Count;
strLine = "";
}
objStreamWriter.Close();
objFileStream.Close();
MessageBox.Show("数据已经成功导出到：" + saveFileDialog2.FileName.ToString(), "导出完成", MessageBoxButtons.OK, MessageBoxIcon.Information);
toolStripProgressBar1.Value = 0;
toolStripProgressBar1.Visible = false;
}
}
}
//————————————————————————————————————————————————————————————————————
/// <summary>
/// 导出到XML(整个数据源)
/// </summary>
public static void ExportTOXML()
{
if (gridView.Rows.Count == 0)
{
MessageBox.Show("没有数据可供导出！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
saveFileDialog2.Filter = "XML files (*.xml)|*.xml";
saveFileDialog2.FilterIndex = 0;
saveFileDialog2.RestoreDirectory = true;
//saveFileDialog2.CreatePrompt = true;
saveFileDialog2.Title = "导出文件保存路径";
saveFileDialog2.FileName = null;
saveFileDialog2.ShowDialog();
string FileName = saveFileDialog2.FileName;
if (FileName.Length != 0)
{
toolStripProgressBar1.Visible = true;
objSet.WriteXml(saveFileDialog2.FileName.ToString());
for (int i = 0; i < objSet.Tables[0].Rows.Count; i++)
{
toolStripProgressBar1.Value += 100 / objSet.Tables[0].Rows.Count;
}
MessageBox.Show("数据已经成功导出到：" + saveFileDialog2.FileName.ToString(), "导出完成", MessageBoxButtons.OK, MessageBoxIcon.Information);
toolStripProgressBar1.Value = 0;
toolStripProgressBar1.Visible = false;
}
}
}
}