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C#导出数据到Excel文件
/// <summary>
/// 导出到Excel类，项目需引用Microsodt.Office.Interop.Excel,
/// 类文件需using System.Data与System.Windows.Forms命名空间
/// </summary>
public class CToExcel
{
/// <summary>
/// 导出到Excel
/// </summary>
/// <param name="fileName">默认文件名</param>
/// <param name="listView">数据源，一个页面上的ListView控件</param>
/// <param name="titleRowCount">标题占据的行数，为0表示无标题</param>
public void ExportExcel(string fileName, System.Windows.Forms.ListView listView,int titleRowCount)
{
string saveFileName = "";
//bool fileSaved = false;
SaveFileDialog saveDialog = new SaveFileDialog();
saveDialog.DefaultExt = "xls";
saveDialog.Filter = "Excel文件|*.xls";
saveDialog.FileName = fileName;
saveDialog.ShowDialog();
saveFileName = saveDialog.FileName;
if (saveFileName.IndexOf(":") < 0) return; //被点了取消
Microsoft.Office.Interop.Excel.Application xlApp;
try
{
xlApp = new Microsoft.Office.Interop.Excel.Application();
}
catch (Exception)
{
MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel");
return;
}
finally
{
}
Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
//写Title
if(titleRowCount!=0)
MergeCells(worksheet, 1, 1, titleRowCount, listView.Columns.Count, listView.Tag.ToString());
//写入列标题
for (int i = 0; i <= listView.Columns.Count - 1; i++)
{
worksheet.Cells[titleRowCount+1, i + 1] = listView.Columns[i].Text;
}
//写入数值
for (int r = 0; r <= listView.Items.Count - 1; r++)
{
for (int i = 0; i <= listView.Columns.Count - 1; i++)
{
worksheet.Cells[r + titleRowCount+2, i + 1] = listView.Items[r].SubItems[i].Text;
}
System.Windows.Forms.Application.DoEvents();
}
worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
//if (Microsoft.Office.Interop.cmbxType.Text != "Notification")
//{
// Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[0].Rows.Count + 1, 2]);
// rg.NumberFormat = "00000000";
//}
if (saveFileName != "")
{
try
{
workbook.Saved = true;
workbook.SaveCopyAs(saveFileName);
//fileSaved = true;
}
catch (Exception ex)
{
//fileSaved = false;
MessageBox.Show("导出文件时出错,文件可能正被打开！n" + ex.Message);
}
}
//else
//{
// fileSaved = false;
//}
xlApp.Quit();
GC.Collect();//强行销毁
// if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //打开EXCEL
MessageBox.Show(fileName + "导出到Excel成功", "提示", MessageBoxButtons.OK);
}
/// <summary>
/// DataTable导出到Excel
/// </summary>
/// <param name="fileName">默认的文件名</param>
/// <param name="dataTable">数据源,一个DataTable数据表</param>
/// <param name="titleRowCount">标题占据的行数，为0则表示无标题</param>
public void ExportExcel(string fileName,System.Data.DataTable dataTable,int titleRowCount)
{
string saveFileName = "";
//bool fileSaved = false;
SaveFileDialog saveDialog = new SaveFileDialog();
saveDialog.DefaultExt = "xls";
saveDialog.Filter = "Excel文件|*.xls";
saveDialog.FileName = fileName;
saveDialog.ShowDialog();
saveFileName = saveDialog.FileName;
if (saveFileName.IndexOf(":") < 0) return; //被点了取消
Microsoft.Office.Interop.Excel.Application xlApp;
try
{
xlApp = new Microsoft.Office.Interop.Excel.Application();
}
catch (Exception)
{
MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel");
return;
}
finally
{
}
Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
//写Title
if(titleRowCount!=0)
MergeCells(worksheet, 1, 1, titleRowCount, dataTable.Columns.Count, dataTable.TableName);
//写入列标题
for (int i = 0; i <= dataTable.Columns.Count - 1; i++)
{
worksheet.Cells[titleRowCount+1, i + 1] = dataTable.Columns[i].ColumnName;
}
//写入数值
for (int r = 0; r <= dataTable.Rows.Count - 1; r++)
{
for (int i = 0; i <= dataTable.Columns.Count - 1; i++)
{
worksheet.Cells[r +titleRowCount+ 2, i + 1] = dataTable.Rows[r][i].ToString();
}
System.Windows.Forms.Application.DoEvents();
}
worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
//if (Microsoft.Office.Interop.cmbxType.Text != "Notification")
//{
// Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[0].Rows.Count + 1, 2]);
// rg.NumberFormat = "00000000";
//}
if (saveFileName != "")
{
try
{
workbook.Saved = true;
workbook.SaveCopyAs(saveFileName);
//fileSaved = true;
}
catch (Exception ex)
{
//fileSaved = false;
MessageBox.Show("导出文件时出错,文件可能正被打开！n" + ex.Message);
}
}
//else
//{
// fileSaved = false;
//}
xlApp.Quit();
GC.Collect();//强行销毁
// if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //打开EXCEL
MessageBox.Show(fileName + "导出到Excel成功", "提示", MessageBoxButtons.OK);
}
/// <summary>
/// 合并单元格，并赋值，对指定WorkSheet操作
/// </summary>
/// <param name="sheetIndex">WorkSheet索引</param>
/// <param name="beginRowIndex">开始行索引</param>
/// <param name="beginColumnIndex">开始列索引</param>
/// <param name="endRowIndex">结束行索引</param>
/// <param name="endColumnIndex">结束列索引</param>
/// <param name="text">合并后Range的值</param>
public void MergeCells(Microsoft.Office.Interop.Excel.Worksheet workSheet, int beginRowIndex, int beginColumnIndex, int endRowIndex, int endColumnIndex, string text)
{
Microsoft.Office.Interop.Excel.Range range = workSheet.get_Range(workSheet.Cells[beginRowIndex, beginColumnIndex], workSheet.Cells[endRowIndex, endColumnIndex]);
range.ClearContents(); //先把Range内容清除，合并才不会出错
range.MergeCells = true;
range.Value2 = text;
range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
range.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;
}
}