Execl的导出

第一步 引用命名空间

using Excel = Microsoft.Office.Interop.Excel;//这种引用方式
using System.Reflection; //Missing类命名空间

到命名空间之前请先添加引用

Microsoft Execl 12....这项

#region 从DataSet到出到Excel

/**/
/// <summary>
/// 执行导出
/// </summary>
/// <param name="ds">要导出的DataTable </param>
/// <param name="toFileName">要导出到的execl文件路径+文件名</param>ps:如果是c/s程序，那您直接丢一openFileDialog就方便多了
/// <param name="strExcelFileName">导出到的execl的Sheet名</param>
private void doExport(DataTable dt, string toFileName, string strSheetName)
{


Excel.Application excel = new Excel.Application(); //Execl的操作类
//读取保存目标的对象
Excel.Workbook bookDest = excel.Workbooks._Open(toFileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value
, Missing.Value, Missing.Value, Missing.Value, Missing.Value
, Missing.Value, Missing.Value, Missing.Value, Missing.Value);//打开要导出到的Execl文件的工作薄。--ps:关于Missing类在这里的作用，我也不知道...囧

Excel.Worksheet sheetDest = bookDest.Worksheets.Add(Missing.Value, Missing.Value, Missing.Value, Missing.Value) as Excel.Worksheet;//给工作薄添加一个Sheet

sheetDest.Name = strSheetName;//自己定义名字O(∩_∩)O哈哈~

int rowIndex = 1;
int colIndex = 0;

excel.Application.Workbooks.Add(true);//这句不写不知道会不会报错

foreach (DataColumn col in dt.Columns)
{
colIndex++;
sheetDest.Cells[1, colIndex] = col.ColumnName;//Execl中的第一列,把DataTable的列名先导进去
}

//导入数据行
foreach (DataRow row in dt.Rows)
{
rowIndex++;
colIndex = 0;
foreach (DataColumn col in dt.Columns)
{
colIndex++;
sheetDest.Cells[rowIndex, colIndex] = row[col.ColumnName].ToString();
}
}

bookDest.Saved = true;


bookDest.Save();
excel.Quit();
excel = null;

GC.Collect();//垃圾回收
}
#endregion


也可直接创建新的Execl文件，不过需要修改一下代码。


#region 从DataSet到出到Excel

/**/
/// <summary>
/// 执行导出
/// </summary>
/// <param name="ds">要导出的DataTable </param>
/// <param name="strExcelFileName">导出到的execl的Sheet名</param>
private void doExport(DataTable dt, string strSheetName)
{


Excel.Application excel = new Excel.Application(); //Execl的操作类
//读取保存目标的对象
Excel.Workbook bookDest = (Excel.WorkbookClass)excel.Workbooks.Add(Missing.Value);
Excel.Worksheet sheetDest = bookDest.Worksheets.Add(Missing.Value, Missing.Value, Missing.Value, Missing.Value) as Excel.Worksheet;//给工作薄添加一个Sheet

sheetDest.Name = strSheetName;//自己定义名字O(∩_∩)O哈哈~

int rowIndex = 1;
int colIndex = 0;

excel.Application.Workbooks.Add(true);//这句不写不知道会不会报错

foreach (DataColumn col in dt.Columns)
{
colIndex++;
sheetDest.Cells[1, colIndex] = col.ColumnName;//Execl中的第一列,把DataTable的列名先导进去
}

//导入数据行
foreach (DataRow row in dt.Rows)
{
rowIndex++;
colIndex = 0;
foreach (DataColumn col in dt.Columns)
{
colIndex++;
sheetDest.Cells[rowIndex, colIndex] = row[col.ColumnName].ToString();
}
}
bookDest.Saved = true;
bookDest.SaveCopyAs("要保存的文件路径+文件名.xls");//方式一
//方式二 bookDest.SaveAs("要保存的文件路径+文件名.xls", Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

excel.Quit();
excel = null;

GC.Collect();//垃圾回收
}
#endregion