//調用的方法
Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
string filename = StartupFilePath + "\\a.xlsx" + ;
app.Visible = false; //不顯示EXCEL
app.DisplayAlerts = false; //不提示信息
app.ScreenUpdating = false; //停止更新屏幕,加快速度
Workbooks wbs = app.Workbooks; //獲取工作薄
_Workbook wb = wbs.Open(filename); //打開文件
Sheets shs = wb.Worksheets; //文件中的Sheets
System.Data.DataTable table = dbh.getDataSet(DealFun(sql)).Tables[0];
CopyDataToSheet(table, shs[1]); //調用方法,將DataTable裏的數據寫入到第2個Sheet中
wb.Save(); //保存
wb.Close(); //關閉工作薄
app.Quit(); //關閉EXCEL
//快速寫入(先寫入數組,然後一次性將數組寫入到EXCEL中)
private void CopyDataToSheet(System.Data.DataTable Table, _Worksheet Sheet)
{
int colCount, rowCount;
colCount = Table.Columns.Count;
rowCount = Table.Rows.Count;
Range range;
//寫入標題行
range = Sheet.get_Range("A1", Missing.Value);
range = range.get_Resize(1, colCount);
object[,] headerData = new object[1, colCount];
for (int iCol = 0; iCol < colCount; iCol++)
{
headerData[0, iCol] = Table.Columns[iCol].ColumnName;
}
range.set_Value(Missing.Value, headerData);
//寫入數據行
range = Sheet.get_Range("A2", Missing.Value);
range = range.get_Resize(rowCount, colCount);
object[,] cellData = new object[rowCount, colCount];
for (int iRow = 0; iRow < rowCount; iRow++)
{
for (int iCol = 0; iCol < colCount; iCol++)
{
cellData[iRow, iCol] = Table.Rows[iRow][iCol].ToString();
}
}
range.set_Value(Missing.Value, cellData);
}
//龜速寫入,一個單元格一個的寫入,不建議使用。
private void CopyDataToSheet2(System.Data.DataTable Table, _Worksheet Sheet)
{
int i_col, i_row;
i_col=1;
i_row=1;
foreach (DataColumn column in Table.Columns) //寫標題
{
Sheet.Cells[i_row, i_col] = column.ColumnName;
i_col++;
}
i_row=2;
foreach (DataRow dr in Table.Rows) //寫數據
{
i_col = 1;
foreach (object obj in dr.ItemArray)
{
Sheet.Cells[i_row, i_col] = dr[i_col - 1].ToString();
i_col++;
}
i_row++;
}
}