C#批量导入Excel或WPS实现方法

/// <summary>
/// //获得当前你选择的Excel Sheet的所有名字
/// </summary>
/// <param name="filePath">文件路径</param>
/// <param name="ExcelType">1 Microsoft Excel 2 WPS Excel</param>
/// <returns></returns>
public static string[] GetExcelSheetNames(string filePath, int ExcelType)
{
try
{
if (ExcelType == 1)
{
Microsoft.Office.Interop.Excel.ApplicationClass excelApp = new Microsoft.Office.Interop.Excel.ApplicationClass();
Microsoft.Office.Interop.Excel.Workbooks wbs = excelApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook wb = wbs.Open(filePath, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing);
int count = wb.Worksheets.Count;
string[] names = new string[count];
for (int i = 1; i <= count; i++)
{
names[i - 1] = ((Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets[i]).Name;
}
return names;
}
else
{
ET.Application etApp;
ET.workbook etbook;
etApp = new ET.Application();
etbook = new ET.workbook();
etbook = (ET.workbook)etApp.Workbooks.Open(filePath, null, null, null, null, null, null, null, null, null, null, null, null);
int count = etbook.Worksheets.Count;
string[] names = new string[count];
for (int i = 1; i <= count; i++)
{
names[i - 1] = ((ET.Worksheet)etbook.Worksheets[i]).Name;
}
return names;
}
}
catch
{
return null;
}
}

//引用命名空间   using Microsoft.Office.Interop.Excel;WPS的ET
/// <summary>
/// DataGridView导出文件到Microsoft Excel WPS Excel 文本文档
/// </summary>
/// <param name="gridView"></param>
/// <param name="excludeColumnsIndexList">排除列"0,1,2"</param>
/// <param name="fileName"></param>
/// <param name="sheetName"></param>
public static void ExportDataGridViewAsExcel(DataGridView gridView, string excludeColumnsIndexList,string fileName, string sheetName)
{
//导出到execl
try
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Microsoft Excel(*.xls)|*.xls|WPS Excel(*.xls)|*.xls|文本文档(*.txt)|*.txt";
saveFileDialog.FileName = fileName; //dataGridView1.Rows[0].Cells[0].Value.ToString() + "幸运榜单_" + DateTime.Now.ToString("yyyymmddhhmmss") + "";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "导出文件保存为";
// saveFileDialog.ShowDialog();
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
string strName = saveFileDialog.FileName;
if (strName.Length != 0)
{
int rowscount = gridView.Rows.Count;
int colscount = gridView.Columns.Count;
if (rowscount <= 0)
{
MessageBox.Show("无数据需要保存 ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (colscount <= 0)
{
MessageBox.Show("无数据需要保存 ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (saveFileDialog.FilterIndex == 1)
{
if (rowscount > 65536)
{
MessageBox.Show("行太多(最大限制为 65536行)，不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (colscount > 255)
{
MessageBox.Show("列太多（最大限制为 255列）, 不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
try
{
//this.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("Microsoft 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 = sheetName;
string[,] datas = new string[rowscount + 1, colscount];
int m = 0, n = 0;
//生成列名称   这里i是从1开始的 因为我第0列是个隐藏列ID  没必要写进去
for (int i = 0; i < gridView.ColumnCount; i++)
{
if (("," + excludeColumnsIndexList + ",").IndexOf("," + i.ToString() + ",") == 0)
{
continue;
}
if (gridView.Columns[i].Visible)
{
datas[0, m] = gridView.Columns[i].HeaderText.ToString();
m++;
}

}
//填充数据
for (int i = 0; i < gridView.RowCount; i++)
{
//j也是从1开始  原因如上  每个人需求不一样
n = 0;
for (int j = 0; j < gridView.ColumnCount; j++)
{
if (("," + excludeColumnsIndexList + ",").IndexOf("," + j.ToString() + ",") == 0)
{
continue;
}
if (gridView.Columns[j].Visible)
{
if (gridView[j, i].Value.GetType() == typeof(string))
{
datas[i+1, n] = "'" + gridView[j, i].Value.ToString();
}
else
{
datas[i+1, n] = gridView[j, i].Value.ToString();
}
n++;
}
}
//this.toolStripProgressBar1.Value += 100 / gridView.RowCount;
}
int exportRowCount = rowscount + 1;
Microsoft.Office.Interop.Excel.Range range = sheet.get_Range("A1", IndexToColumn(colscount) + exportRowCount.ToString());
range.Value2 = datas;

sheet.Columns.EntireColumn.AutoFit(); // Automatically change the column width

book.SaveAs(strName, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal, miss, miss, miss,
miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlShared, miss, miss, miss,
miss, miss);
//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();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "导出失败,\n1、如果未安装Microsoft Excel，请导出时尝试选择保存到WPS Excel或者文本文档！\n2、请确保导出到的目标文件未打开，否则程序占用可能导致失败。\n3、如已关闭还提示错误，请尝试在任务管理器结束Excel程序。");
return;
}

}
else if (saveFileDialog.FilterIndex == 2)
{
if (rowscount > 65536)
{
MessageBox.Show("行太多(最大限制为 65536行)，不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (colscount > 255)
{
MessageBox.Show("列太多（最大限制为 255列）, 不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
try
{
ET.Application etApp;
//获取工作表表格
etApp = new ET.Application();
etApp.Workbooks.Add(Type.Missing);
etApp.Visible = false;
if (etApp == null)
{
MessageBox.Show("WPS Excel无法启动！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
System.Reflection.Missing miss = System.Reflection.Missing.Value;
ET.Workbooks books = (ET.Workbooks)etApp.Workbooks;
ET.workbook book = (ET.workbook)(books.Add(miss));
ET.Worksheet sheet = (ET.Worksheet)book.ActiveSheet;
sheet.Name = sheetName;
string[,] datas = new string[rowscount + 1, colscount];
int m = 0, n = 0;
//生成列名称   这里i是从1开始的 因为我第0列是个隐藏列ID  没必要写进去
for (int i = 0; i < gridView.ColumnCount; i++)
{
if (("," + excludeColumnsIndexList + ",").IndexOf("," + i.ToString() + ",") == 0)
{
continue;
}
if (gridView.Columns[i].Visible)
{
datas[0, m] = gridView.Columns[i].HeaderText.ToString();
m++;
}

}
//填充数据
for (int i = 0; i < gridView.RowCount; i++)
{
//j也是从1开始  原因如上  每个人需求不一样
n = 0;
for (int j = 0; j < gridView.ColumnCount; j++)
{
if (("," + excludeColumnsIndexList + ",").IndexOf("," + j.ToString() + ",") == 0)
{
continue;
}
if (gridView.Columns[j].Visible)
{
if (gridView[j, i].Value.GetType() == typeof(string))
{
datas[i + 1, n] = "'" + gridView[j, i].Value.ToString();
}
else
{
datas[i + 1, n] = gridView[j, i].Value.ToString();
}
n++;
}
}
//this.toolStripProgressBar1.Value += 100 / gridView.RowCount;
}
int exportRowCount = rowscount + 1;
ET.Range range = sheet.get_Range("A1", IndexToColumn(colscount) + exportRowCount.ToString());
range.Value2 = datas;
sheet.Columns.EntireColumn.AutoFit(); // Automatically change the column width
book.SaveAs(strName, ET.XlFileFormat.xlWorkbookNormal, miss, miss, miss, miss, ET.ETSaveAsAccessMode.etShared, miss, miss, miss, miss);
book.Close(false, miss, miss);
books.Close();
etApp.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
System.Runtime.InteropServices.Marshal.ReleaseComObject(books);
System.Runtime.InteropServices.Marshal.ReleaseComObject(etApp);

GC.Collect();
}
catch (Exception ex)
{
MessageBox.Show("导出失败,\n1、如果未安装WPS Excel，请导出时尝试选择保存到Microsoft Excel或者文本文档！\n2、请确保导出到的目标文件未打开，否则程序占用可能导致失败。\n3、如已关闭还提示错误，请尝试在任务管理器结束Excel程序。\n系统消息：" + ex.Message, "错误提示");
return;
}

}
else if (saveFileDialog.FilterIndex == 3)
{

FileStream fs = new FileStream(strName, FileMode.OpenOrCreate, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
sw.BaseStream.Seek(0, SeekOrigin.End);
string str = "";
int n = 0;
for (int i = 0; i < gridView.ColumnCount; i++)
{
if (gridView.Columns[i].Visible)
{
n++;
if (n == 1)
{
str += gridView.Columns[i].HeaderText.ToString();
}
else
{
str += "," + gridView.Columns[i].HeaderText.ToString();
}
}
}
sw.WriteLine(str);

//填充数据
for (int i = 0; i < gridView.RowCount; i++)
{
str = "";
int m = 0;
//j也是从1开始  原因如上  每个人需求不一样
for (int j = 0; j < gridView.ColumnCount; j++)
{
if (gridView.Columns[j].Visible)
{
m++;
if (m == 1)
{
str += gridView[j, i].Value.ToString();
}
else
{
str += "," + gridView[j, i].Value.ToString();
}
}

}
sw.WriteLine(str);
//this.toolStripProgressBar1.Value += 100 / gridView.RowCount;
}

sw.Flush();
sw.Close();
fs.Close();

}
MessageBox.Show("数据已经成功导出!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
//this.toolStripProgressBar1.Value = 0;

//System.Diagnostics.Process.Start(strName);
}
}
}
catch (Exception ex)
{
MessageBox.Show("导出失败,\n1、如果未安装Microsoft Excel或者WPS Excel，请导出时尝试选择保存到文本文档！\n2、请确保导出到的目标文件未打开，否则程序占用可能导致失败。\n3、如已关闭还提示错误，请尝试在任务管理器结束Excel程序。\n系统消息：" + ex.Message, "错误提示");
return;
}
}
//引用命名空间   using Microsoft.Office.Interop.Excel;WPS的ET
/// <summary>
/// DataTable导出文件到Microsoft Excel WPS Excel 文本文档
/// </summary>
/// <param name="dt"></param>
/// <param name="fileName"></param>
/// <param name="sheetName"></param>
public static void ExportDataTableAsExcel(System.Data.DataTable dt, string fileName, string sheetName)
{
//导出到execl
try
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Microsoft Excel(*.xls)|*.xls|WPS Excel(*.xls)|*.xls|文本文档(*.txt)|*.txt";
saveFileDialog.FileName = fileName; //dataGridView1.Rows[0].Cells[0].Value.ToString() + "幸运榜单_" + DateTime.Now.ToString("yyyymmddhhmmss") + "";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "导出文件保存为";
// saveFileDialog.ShowDialog();
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
string strName = saveFileDialog.FileName;
if (strName.Length != 0)
{
int rowscount = dt.Rows.Count;
int colscount = dt.Columns.Count;
if (rowscount <= 0)
{
MessageBox.Show("无数据需要保存 ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}

if (colscount <= 0)
{
MessageBox.Show("无数据需要保存 ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (saveFileDialog.FilterIndex == 1)
{

if (rowscount > 65536)
{
MessageBox.Show("行太多(最大限制为 65536行)，不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (colscount > 255)
{
MessageBox.Show("列太多（最大限制为 255列）, 不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
try
{

//this.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("Microsoft 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 = sheetName;

string[,] datas = new string[rowscount + 1, colscount];
//生成列名称   这里i是从1开始的 因为我第0列是个隐藏列ID  没必要写进去
for (int i = 0; i < dt.Columns.Count; i++)
{
datas[0, i] = dt.Columns[i].ColumnName.Trim();
}

//填充数据
for (int i = 0; i < dt.Rows.Count; i++)
{
//j也是从1开始  原因如上  每个人需求不一样
for (int j = 0; j < dt.Columns.Count; j++)
{

if (dt.Rows[i][j].GetType() == typeof(string))
{
datas[i + 1, j] = "'" + dt.Rows[i][j].ToString();
}
else
{
datas[i + 1, j] = dt.Rows[i][j].ToString();
}

}
//this.toolStripProgressBar1.Value += 100 / gridView.RowCount;
}
int exportRowCount = rowscount + 1;
Microsoft.Office.Interop.Excel.Range range = sheet.get_Range("A1", IndexToColumn(colscount) + exportRowCount.ToString());
range.Value2 = datas;

sheet.Columns.EntireColumn.AutoFit(); // Automatically change the column width

book.SaveAs(strName, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal, miss, miss, miss,
miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlShared, miss, miss, miss,
miss, miss);

//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();
}
catch (Exception ex)
{
MessageBox.Show("导出失败,\n1、如果未安装Microsoft Excel，请导出时尝试选择保存到WPS Excel或者文本文档！\n2、请确保导出到的目标文件未打开，否则程序占用可能导致失败。\n3、如已关闭还提示错误，请尝试在任务管理器结束Excel程序。\n系统消息：" + ex.Message, "错误提示");
return;
}
}
if (saveFileDialog.FilterIndex == 2)
{

if (rowscount > 65536)
{
MessageBox.Show("行太多(最大限制为 65536行)，不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (colscount > 255)
{
MessageBox.Show("列太多（最大限制为 255列）, 不能保存! ", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
try
{
ET.Application etApp;
//获取工作表表格
etApp = new ET.Application();
etApp.Workbooks.Add(Type.Missing);
etApp.Visible = false;
if (etApp == null)
{
MessageBox.Show("WPS Excel无法启动！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
System.Reflection.Missing miss = System.Reflection.Missing.Value;
ET.Workbooks books = (ET.Workbooks)etApp.Workbooks;
ET.workbook book = (ET.workbook)(books.Add(miss));
ET.Worksheet sheet = (ET.Worksheet)book.ActiveSheet;
sheet.Name = sheetName;

string[,] datas = new string[rowscount + 1, colscount];
//生成列名称   这里i是从1开始的 因为我第0列是个隐藏列ID  没必要写进去
for (int i = 0; i < dt.Columns.Count; i++)
{
datas[0, i] = dt.Columns[i].ColumnName.Trim();
}

//填充数据
for (int i = 0; i < dt.Rows.Count; i++)
{
//j也是从1开始  原因如上  每个人需求不一样
for (int j = 0; j < dt.Columns.Count; j++)
{

if (dt.Rows[i][j].GetType() == typeof(string))
{
datas[i + 1, j] = "'" + dt.Rows[i][j].ToString();
}
else
{
datas[i + 1, j] = dt.Rows[i][j].ToString();
}
}
//this.toolStripProgressBar1.Value += 100 / gridView.RowCount;
}
int exportRowCount = rowscount + 1;
ET.Range range = sheet.get_Range("A1", IndexToColumn(colscount) + exportRowCount.ToString());
range.Value2 = datas;
sheet.Columns.EntireColumn.AutoFit(); // Automatically change the column width
book.SaveAs(strName, ET.XlFileFormat.xlWorkbookNormal, miss, miss, miss, miss, ET.ETSaveAsAccessMode.etShared, miss, miss, miss, miss);
book.Close(false, miss, miss);
books.Close();
etApp.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
System.Runtime.InteropServices.Marshal.ReleaseComObject(books);
System.Runtime.InteropServices.Marshal.ReleaseComObject(etApp);

GC.Collect();
}
catch (Exception ex)
{
MessageBox.Show("导出失败,\n1、如果未安装WPS Excel，请导出时尝试选择保存到Microsoft Excel或者文本文档！\n2、请确保导出到的目标文件未打开，否则程序占用可能导致失败。\n3、如已关闭还提示错误，请尝试在任务管理器结束Excel程序。\n系统消息：" + ex.Message, "错误提示");
return;
}
}
else if (saveFileDialog.FilterIndex == 2)
{

FileStream fs = new FileStream(strName, FileMode.OpenOrCreate, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
sw.BaseStream.Seek(0, SeekOrigin.End);
string str = "";
for (int i = 0; i < dt.Columns.Count; i++)
{
if (i == 0)
{
str += dt.Columns[i].ColumnName.Trim();
}
else
{
str += "," + dt.Columns[i].ColumnName.Trim();
}
}
sw.WriteLine(str);

//填充数据
for (int i = 0; i < dt.Rows.Count; i++)
{
str = "";
//j也是从1开始  原因如上  每个人需求不一样
for (int j = 0; j < dt.Columns.Count; j++)
{
if (j == 0)
{
str += dt.Rows[i][j].ToString();
}
else
{
str += "," + dt.Rows[i][j].ToString();
}

}
sw.WriteLine(str);
//this.toolStripProgressBar1.Value += 100 / gridView.RowCount;
}

sw.Flush();
sw.Close();
fs.Close();

}
MessageBox.Show("数据已经成功导出!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
//this.toolStripProgressBar1.Value = 0;

//System.Diagnostics.Process.Start(strName);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "导出失败,\n1、如果未安装Microsoft Excel或者WPS Excel，请导出时尝试选择保存到文本文档！\n2、请确保导出到的目标文件未打开，否则程序占用可能导致失败。\n3、如已关闭还提示错误，请尝试在任务管理器结束Excel程序。");
}
}