//DataGridView導出Excel
private void bt_Excl_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog = new SaveFileDialog();

saveFileDialog.Filter = "Microsoft Excel 工作表 (.xls)|*.xls";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "導出Excel文件到";
DateTime now = DateTime.Now;
saveFileDialog.FileName = now.Year.ToString().PadLeft(2) + now.Month.ToString().PadLeft(2, ‘0‘) + now.Day.ToString().PadLeft(2, ‘0‘) + "-" + now.Hour.ToString().PadLeft(2, ‘0‘) + now.Minute.ToString().PadLeft(2, ‘0‘) + now.Second.ToString().PadLeft(2, ‘0‘);
saveFileDialog.ShowDialog();
Stream myStream;
myStream = saveFileDialog.OpenFile();
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));
string str = "";
try
{
//寫標題
for (int i = 0; i < dataTitl.ColumnCount; i++)
{
if (i > 0)
{
str += "\t";
}
str += dataTitl.Columns[i].HeaderText;
}
sw.WriteLine(str);
//寫內容
for (int j = 0; j < dataTitl.Rows.Count; j++)
{
string tempStr = "";
for (int k = 0; k < dataTitl.Columns.Count; k++)
{
if (k > 0)
{
tempStr += "\t";
}
tempStr += dataTitl.Rows[j].Cells[k].Value.ToString();
}
sw.WriteLine(tempStr);
}
sw.Close();
myStream.Close();
}
catch (Exception)
{
MessageBox.Show("題目導出完成。", "導出", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
finally
{
sw.Close();
myStream.Close();
}
}

在窗體中把DataGridView中的數據導出Excel