如何在C#中导出Excel文件？相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
具体内容如下
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Windows.Forms;
using System.Reflection;
namespace DMS
{
/// <summary>
/// C#操作Excel类
/// </summary>
class ExcelOperate
{
//法一
//public bool DataSetToExcel(DataSet dataSet, bool isShowExcle)
//{
// DataTable dataTable = dataSet.Tables[0];
// int rowNumber = dataTable.Rows.Count;
// int columnNumber = dataTable.Columns.Count;
// if (rowNumber == 0)
// {
// MessageBox.Show("没有任何数据可以导入到Excel文件！");
// return false;
// }
// //建立Excel对象
// Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
// excel.Application.Workbooks.Add(true);
// excel.Visible = isShowExcle;//是否打开该Excel文件
// //填充数据
// for (int c = 0; c < rowNumber; c++)
// {
// for (int j = 0; j < columnNumber; j++)
// {
// excel.Cells[c + 1, j + 1] = dataTable.Rows[c].ItemArray[j];
// }
// }
// return true;
//}
//法二
//public bool DataSetToExcel(DataSet dataSet, bool isShowExcle)
//{
// DataTable dataTable = dataSet.Tables[0];
// int rowNumber = dataTable.Rows.Count;
// int rowIndex = 1;
// int colIndex = 0;
// if (rowNumber == 0)
// {
// return false;
// }
// //建立Excel对象
// Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
// excel.Application.Workbooks.Add(true);
// excel.Visible = isShowExcle;
// //生成字段名称
// foreach (DataColumn col in dataTable.Columns)
// {
// colIndex++;
// excel.Cells[1, colIndex] = col.ColumnName;
// }
// //填充数据
// foreach (DataRow row in dataTable.Rows)
// {
// rowIndex++;
// colIndex = 0;
// foreach (DataColumn col in dataTable.Columns)
// {
// colIndex++;
// excel.Cells[rowIndex, colIndex] = row[col.ColumnName];
// }
// }
// return true;
//}
//法三（速度最快）
/// <summary>
/// 将数据集中的数据导出到EXCEL文件
/// </summary>
/// <param name="dataSet">输入数据集</param>
/// <param name="isShowExcle">是否显示该EXCEL文件</param>
/// <returns></returns>
public bool DataSetToExcel(DataSet dataSet, bool isShowExcle)
{
DataTable dataTable = dataSet.Tables[0];
int rowNumber = dataTable.Rows.Count;//不包括字段名
int columnNumber = dataTable.Columns.Count;
int colIndex = 0;
if (rowNumber == 0)
{
return false;
}
//建立Excel对象
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
//excel.Application.Workbooks.Add(true);
Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
excel.Visible = isShowExcle;
//Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1];
Microsoft.Office.Interop.Excel.Range range;
//生成字段名称
foreach (DataColumn col in dataTable.Columns)
{
colIndex++;
excel.Cells[1, colIndex] = col.ColumnName;
}
object[,] objData = new object[rowNumber, columnNumber];
for (int r = 0; r < rowNumber; r++)
{
for (int c = 0; c < columnNumber; c++)
{
objData[r, c] = dataTable.Rows[r][c];
}
//Application.DoEvents();
}
// 写入Excel
range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]);
//range.NumberFormat = "@";//设置单元格为文本格式
range.Value2 = objData;
worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, 1]).NumberFormat = "yyyy-m-d h:mm";
return true;
}
//法四
//public bool DataSetToExcel(DataSet dataSet, bool isShowExcle)
//{
// DataTable dataTable = dataSet.Tables[0];
// int rowNumber = dataTable.Rows.Count;
// int columnNumber = dataTable.Columns.Count;
// String stringBuffer = "";
// if (rowNumber == 0)
// {
// MessageBox.Show("没有任何数据可以导入到Excel文件！");
// return false;
// }
// //建立Excel对象
// Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
// excel.Application.Workbooks.Add(true);
// excel.Visible = isShowExcle;//是否打开该Excel文件
// //填充数据
// for (int i = 0; i < rowNumber; i++)
// {
// for (int j = 0; j < columnNumber; j++)
// {
// stringBuffer += dataTable.Rows[i].ItemArray[j].ToString();
// if (j < columnNumber - 1)
// {
// stringBuffer += "\t";
// }
// }
// stringBuffer += "\n";
// }
// Clipboard.Clear();
// Clipboard.SetDataObject(stringBuffer);
// ((Microsoft.Office.Interop.Excel.Range)excel.Cells[1, 1]).Select();
// ((Microsoft.Office.Interop.Excel.Worksheet)excel.ActiveWorkbook.ActiveSheet).Paste(Missing.Value, Missing.Value);
// Clipboard.Clear();
// return true;
//}
//public bool DataSetToExcel(DataSet dataSet, string fileName, bool isShowExcle)
//{
// DataTable dataTable = dataSet.Tables[0];
// int rowNumber = dataTable.Rows.Count;
// int columnNumber = dataTable.Columns.Count;
// if (rowNumber == 0)
// {
// MessageBox.Show("没有任何数据可以导入到Excel文件！");
// return false;
// }
// //建立Excel对象
// Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
// Microsoft.Office.Interop.Excel.Workbook workBook = excel.Application.Workbooks.Add(true);
// excel.Visible = false;//是否打开该Excel文件
// //填充数据
// for (int i = 0; i < rowNumber; i++)
// {
// for (int j = 0; j < columnNumber; j++)
// {
// excel.Cells[i + 1, j + 1] = dataTable.Rows[i].ItemArray[j];
// }
// }
// //string fileName = path + "\\" + DateTime.Now.ToString().Replace(':', '_') + ".xls";
// workBook.SaveAs(fileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
// try
// {
// workBook.Saved = true;
// excel.UserControl = false;
// //excelapp.Quit();
// }
// catch (Exception exception)
// {
// MessageBox.Show(exception.Message);
// }
// finally
// {
// workBook.Close(Microsoft.Office.Interop.Excel.XlSaveAction.xlSaveChanges, Missing.Value, Missing.Value);
// excel.Quit();
// }
// if (isShowExcle)
// {
// System.Diagnostics.Process.Start(fileName);
// }
// return true;
//}
//public bool DataSetToExcel(DataSet dataSet, string fileName, bool isShowExcle)
//{
// DataTable dataTable = dataSet.Tables[0];
// int rowNumber = dataTable.Rows.Count;//不包括字段名
// int columnNumber = dataTable.Columns.Count;
// int colIndex = 0;
// if (rowNumber == 0)
// {
// MessageBox.Show("没有任何数据可以导入到Excel文件！");
// return false;
// }
// //建立Excel对象
// Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
// //excel.Application.Workbooks.Add(true);
// Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
// Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
// excel.Visible = isShowExcle;
// //Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1];
// worksheet.Name = "挠度数据";
// Microsoft.Office.Interop.Excel.Range range;
// //生成字段名称
// foreach (DataColumn col in dataTable.Columns)
// {
// colIndex++;
// excel.Cells[1, colIndex] = col.ColumnName;
// }
// object[,] objData = new object[rowNumber, columnNumber];
// for (int r = 0; r < rowNumber; r++)
// {
// for (int c = 0; c < columnNumber; c++)
// {
// objData[r, c] = dataTable.Rows[r][c];
// }
// //Application.DoEvents();
// }
// // 写入Excel
// range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]);
// //range.NumberFormat = "@";//设置单元格为文本格式
// range.Value2 = objData;
// worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, 1]).NumberFormat = "yyyy-m-d h:mm";
// //string fileName = path + "\\" + DateTime.Now.ToString().Replace(':', '_') + ".xls";
// workbook.SaveAs(fileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
// try
// {
// workbook.Saved = true;
// excel.UserControl = false;
// //excelapp.Quit();
// }
// catch (Exception exception)
// {
// MessageBox.Show(exception.Message);
// }
// finally
// {
// workbook.Close(Microsoft.Office.Interop.Excel.XlSaveAction.xlSaveChanges, Missing.Value, Missing.Value);
// excel.Quit();
// }
// //if (isShowExcle)
// //{
// // System.Diagnostics.Process.Start(fileName);
// //}
// return true;
//}
/// <summary>
/// 将数据集中的数据保存到EXCEL文件
/// </summary>
/// <param name="dataSet">输入数据集</param>
/// <param name="fileName">保存EXCEL文件的绝对路径名</param>
/// <param name="isShowExcle">是否打开EXCEL文件</param>
/// <returns></returns>
public bool DataSetToExcel(DataSet dataSet, string fileName, bool isShowExcle)
{
DataTable dataTable = dataSet.Tables[0];
int rowNumber = dataTable.Rows.Count;//不包括字段名
int columnNumber = dataTable.Columns.Count;
int colIndex = 0;
if (rowNumber == 0)
{
MessageBox.Show("没有任何数据可以导入到Excel文件！");
return false;
}
//建立Excel对象
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
//excel.Application.Workbooks.Add(true);
Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
excel.Visible = false;
//Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1];
Microsoft.Office.Interop.Excel.Range range;
//生成字段名称
foreach (DataColumn col in dataTable.Columns)
{
colIndex++;
excel.Cells[1, colIndex] = col.ColumnName;
}
object[,] objData = new object[rowNumber, columnNumber];
for (int r = 0; r < rowNumber; r++)
{
for (int c = 0; c < columnNumber; c++)
{
objData[r, c] = dataTable.Rows[r][c];
}
//Application.DoEvents();
}
// 写入Excel
range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]);
//range.NumberFormat = "@";//设置单元格为文本格式
range.Value2 = objData;
worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, 1]).NumberFormat = "yyyy-m-d h:mm";
//string fileName = path + "\\" + DateTime.Now.ToString().Replace(':', '_') + ".xls";
workbook.SaveAs(fileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
try
{
workbook.Saved = true;
excel.UserControl = false;
//excelapp.Quit();
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
finally
{
workbook.Close(Microsoft.Office.Interop.Excel.XlSaveAction.xlSaveChanges, Missing.Value, Missing.Value);
excel.Quit();
}
if (isShowExcle)
{
System.Diagnostics.Process.Start(fileName);
}
return true;
}
}
}看完上述内容，你们掌握如何在C#中导出Excel文件的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注亿速云行业资讯频道，感谢各位的阅读！
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