C# DataGridView 倒出word

public static void ExportToWord(DataGridView dgv, ProgressBar progress, SaveFileDialog savefile)
{
Microsoft.Office.Interop.Word.Document WordDoc = new Microsoft.Office.Interop.Word.Document();
Microsoft.Office.Interop.Word.Table WordTable;
object WordObj;
if (dgv.Rows.Count == 0)
{
return;
}
else
{
savefile.AddExtension = true;
savefile.DefaultExt = ".doc";
savefile.CreatePrompt = true;
savefile.Title = "匯出檔案儲存路徑";
savefile.Filter = "Word files (*.doc)|*.doc";
if (savefile.ShowDialog() == DialogResult.OK)
{
progress.Visible = true;
object path = savefile.FileName;
WordObj = System.Reflection.Missing.Value;
//建立word對象
Microsoft.Office.Interop.Word.Application word = new Microsoft.Office.Interop.Word.Application();
WordDoc = word.Documents.Add(ref WordObj, ref WordObj, ref WordObj, ref WordObj);
//建立表格
//將資料產生word表格檔案
WordTable = WordDoc.Tables.Add(WordDoc.Paragraphs.Last.Range, dgv.RowCount, dgv.ColumnCount, ref WordObj, ref WordObj);
WordTable.Columns.SetWidth(50, Microsoft.Office.Interop.Word.WdRulerStyle.wdAdjustNone);

try
{
for (int i = 0; i < dgv.Columns.Count; i++)//設定標題
{
WordTable.Cell(0, i + 1).Range.Text = dgv.Columns[i].HeaderText;
WordTable.Cell(0, i + 1).Range.Font.Size = 5;

}
for (int i = 1; i < dgv.Rows.Count; i++)//填充資料
{
for (int j = 0; j < dgv.Columns.Count; j++)
{
WordTable.Cell(i + 1, j + 1).Range.Text = dgv[j, i - 1].Value.ToString();
WordTable.Cell(i+1, j + 1).Range.Font.Size = 5;
}
progress.Value += 100 / dgv.RowCount;
}
WordDoc.SaveAs(ref path, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj, ref WordObj);
WordDoc.Close(ref WordObj, ref WordObj, ref WordObj);
progress.Value = 100;
MessageBox.Show("資料已經成功匯出到：" + savefile.FileName.ToString(), "匯出完成", MessageBoxButtons.OK, MessageBoxIcon.Information);
progress.Value = 0;
progress.Visible = false;
}
catch (Exception e)
{
MessageBox.Show(e.Message, "友情提示", MessageBoxButtons.OK);
}
finally
{
word.Quit(ref WordObj, ref WordObj, ref WordObj);
}

}
}
}