DataTable导入到Excel文件

public static bool DataTableToExcel(System.Data.DataTable dt, string fileName, bool showFileDialog=false)
{
if (showFileDialog)
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.FileName = fileName;
saveFileDialog.Title = "Export Excel File To";
// saveFileDialog.ShowDialog();

if (saveFileDialog.ShowDialog() == DialogResult.OK)
fileName = saveFileDialog.FileName;
else
return false;
}
System.Reflection.Missing miss = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.ApplicationClass();
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;
if (!string.IsNullOrEmpty(dt.TableName))
{
sheet.Name = dt.TableName;
}

int intIndex = 0;
foreach (DataColumn column in dt.Columns)
{
intIndex++;
excel.Cells[1, intIndex] = column.ColumnName;
}

int rowCount = dt.Rows.Count;
int colCount = dt.Columns.Count;
object[,] dataArray = new object[rowCount, colCount];
for (int i = 0; i < rowCount; i++)
{
for (int j = 0; j < colCount; j++)
{
//避免格式不兼容，加上"'"
dataArray[i, j] = "'"+dt.Rows[i][j].ToString();
}
}

sheet.get_Range("A2", sheet.Cells[rowCount + 1, colCount]).Value2 = dataArray;
sheet.SaveAs(fileName, 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();
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();
return true;

}View Code