我的winform程序从datagrid导出到excel老是出错，请高手指点！在线等！
private string ExportToExcel(string filename)
{
System.Threading.Thread thisThread = System.Threading.Thread.CurrentThread;
System.Globalization.CultureInfo originalCulture = thisThread.CurrentCulture;
object objOpt = System.Reflection.Missing.Value;
try
{
object obj = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
app.Visible = true;
Workbooks workbooks = app.Workbooks;
_Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);
Sheets sheets = workbook.Worksheets;
_Worksheet worksheet = (_Worksheet)sheets.get_Item(1);
int ridx = 1;
int cidx = 0;
for (int i = 0; i < dataGridView1.ColumnCount; i++)
{
worksheet.Cells[0, i] = dataGridView1.Columns[i].HeaderText;
}
if (dataGridView1.RowCount > 0)
{
for (int j = 0; j < dataGridView1.RowCount;j++)

{
for (int k = 0; k < dataGridView1.ColumnCount; k++)
{
worksheet.Cells[ridx, cidx] = dataGridView1[j, k].Value.ToString();
cidx++;
}
ridx++;
}
}
workbook.SaveAs(filename,obj,obj,obj,obj,obj,XlSaveAsAccessMode.xlExclusive,obj,obj,obj,obj,obj);
workbook.Saved = true;
app.UserControl = false;
app.Quit();
return "导出[ " + filename + "]成功 ";
}
catch (Exception _e)
{
return "导出失败，原因：\n " + _e.Message;
}
finally
{
thisThread.CurrentCulture = originalCulture;
}
}

[解决办法]
public static void ExportDataGridViewToExcel(DataGridView dataGridview1)

{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Execl files (*.xls)|*.xls ";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "导出Excel文件到 ";

//saveFileDialog.ShowDialog();
if (saveFileDialog.ShowDialog()==DialogResult.OK)
{
Stream myStream;
myStream = saveFileDialog.OpenFile();
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding( "gb2312 "));
string str = " ";
try
{

//写标题
for (int i = 0; i < dataGridview1.ColumnCount; i++)
{
if (i > 0)
{
str += "\t ";
}
str += dataGridview1.Columns[i].HeaderText;
}

sw.WriteLine(str);
//写内容
for (int j = 0; j < dataGridview1.Rows.Count - 1; j++)
{
string tempStr = " ";
for (int k = 0; k < dataGridview1.Columns.Count; k++)
{
if (k > 0)
{
tempStr += "\t ";
}
tempStr += dataGridview1.Rows[j].Cells[k].Value.ToString();
}
sw.WriteLine(tempStr);
}
sw.Close();
myStream.Close();
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
finally
{
sw.Close();
myStream.Close();
MessageBox.Show( "ok ");
}
}
}
[解决办法]
if (MessageBox.Show( "你要出到EXCEL! ", "提示 ", System.Windows.Forms.MessageBoxButtons.OKCancel) == System.Windows.Forms.DialogResult.OK)
{
this.saveFileDialog1.AddExtension = true;
this.saveFileDialog1.DefaultExt = "xls ";
saveFileDialog1.Filter = "*.xls|xls ";
this.saveFileDialog1.ShowDialog();
FileName = this.saveFileDialog1.FileName;
if (FileName == " ")
{
return;
}
}

String cmd = "SELECT a.user_id , a.user_ename, a.user_cname, a.update_user, a.update_time FROM wms_user a ";
CDBmySQL dbALM = new CDBmySQL(clsGol.DBDataBase, clsGol.DBServerName, clsGol.DBUserName, clsGol.DBUserPassWord);
DataTable dt = dbALM.GetDataTable( "wms_user ", cmd);
//System.Data.DataTable dt = new System.Data.DataTable();

long totalCount = dt.Rows.Count;
long rowRead = 0;
float percent = 0;
Excel.Application xlApp = null;
xlApp = new Excel.Application();

Excel.Workbooks workbooks = xlApp.Workbooks;
Excel.Workbook workbook = workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);
Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
Excel.Range range;
worksheet.Cells[1,1] = "工 ";
worksheet.Cells[1, 2] = "英文名 ";
worksheet.Cells[1, 3] = "中文名 ";
worksheet.Cells[1, 4] = "修改者 ";
worksheet.Cells[1, 5] = "修改 ";
range = (Excel.Range)worksheet.Cells[1, 5];
for (int r = 0; r < dt.Rows.Count; r++)
{
worksheet.Cells[r + 2, 1] = r + 1;
for (int i = 0; i < dt.Columns.Count; i++)
{
//worksheet.Cells[r+2,i+1]=dt.Rows[r][i];
if (i + 1 != dt.Columns.Count+1)
worksheet.Cells[r + 2, i + 1] = dt.Rows[r][i];
}
rowRead++;
percent = ((float)(100 * rowRead)) / totalCount;
System.Windows.Forms.Application.DoEvents();
}
range = worksheet.get_Range(worksheet.Cells[2, 1], worksheet.Cells[dt.Rows.Count + 2, dt.Columns.Count]);
workbook.Saved = true;
workbook.SaveCopyAs(FileName);

[解决办法]
更改控制面板中本地区域设置为英语(美国)看看，或者
System.Globalization.CultureInfo cultureInfo = new System.Globalization.CultureInfo( "en-US "); // 0x0409
System.Threading.Thread.CurrentThread.CurrentCulture = cultureInfo;

完成后设置为zh-CN，要么去掉！