C#操作Excel

刚好用到C#操作Excel，goole了一些资料，总结了一下，主要流程如下所示：

一、添加引用 添加com组件 Microsoft Office 11.0 Object Library 或者添加Excel.exe，引用默认路径为C:/Program Files/Microsoft Office/OFFICE11/Excel.exe

二、代码

public static void ExportToExcel(DataSet dataSet, string outputPath)
{
// Create the Excel Application object
ApplicationClass excelApp = new ApplicationClass();

// Create a new Excel Workbook
Workbook excelWorkbook = excelApp.Workbooks.Add(Type.Missing);

int sheetIndex = 0;

// Copy each DataTable as a new Sheet
foreach (System.Data.DataTable dt in dataSet.Tables)
{

// Create a new Sheet
Worksheet excelSheet = (Worksheet) excelWorkbook.Sheets.Add(
excelWorkbook.Sheets.get_Item(++sheetIndex),
Type.Missing, 1, XlSheetType.xlWorksheet);

excelSheet.Name = dt.TableName;

// Copy the column names (cell-by-cell)
for (int col = 0; col < dt.Columns.Count; col++) {
excelSheet.Cells[1, col + 1] = dt.Columns[col].ColumnName;
}

((Range) excelSheet.Rows[1, Type.Missing]).Font.Bold = true;

// Copy the values (cell-by-cell)
for (int col = 0; col < dt.Columns.Count; col++)
{
for (int row = 0; row < dt.Rows.Count; row++)
{
excelSheet.Cells[row + 2, col + 1] = dt.Rows[row].ItemArray[col];
}
}

}

// Save and Close the Workbook
excelWorkbook.SaveAs(outputPath, XlFileFormat.xlWorkbookNormal, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, XlSaveAsAccessMode.xlExclusive,
Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
excelWorkbook.Close(true, Type.Missing, Type.Missing);
excelWorkbook = null;

// Release the Application object
excelApp.Quit();
excelApp = null;

// Collect the unreferenced objects
GC.Collect();
GC.WaitForPendingFinalizers();

}