读写并生成excel，word，用什么语言比较好

这是.net 中的 office提供接口的， 你只要找这些资料就行了
和语言无关

下面的代码是 把grid里的数据 导出为excel文件

Dim excel As New Microsoft.Office.Interop.Excel.ApplicationClass
Dim wBook As Microsoft.Office.Interop.Excel.Workbook
Dim wSheet As Microsoft.Office.Interop.Excel.Worksheet

wBook = excel.Workbooks.Add()
wSheet = wBook.ActiveSheet()

Dim dt As System.Data.DataTable = dset.Tables(0)
Dim dc As System.Data.DataColumn
Dim dr As System.Data.DataRow
Dim colIndex As Integer = 0
Dim rowIndex As Integer = 0

For Each dc In dt.Columns
colIndex = colIndex + 1
excel.Cells(1, colIndex) = dc.ColumnName
Next

For Each dr In dt.Rows
rowIndex = rowIndex + 1
colIndex = 0
For Each dc In dt.Columns
colIndex = colIndex + 1
excel.Cells(rowIndex + 1, colIndex) = dr(dc.ColumnName)

Next
Next

wSheet.Columns.AutoFit()
Dim strFileName As String = "D:\ss.xls"
Dim blnFileOpen As Boolean = False
Try
Dim fileTemp As System.IO.FileStream = System.IO.File.OpenWrite(strFileName)
fileTemp.Close()
Catch ex As Exception
blnFileOpen = False
End Try

If System.IO.File.Exists(strFileName) Then
System.IO.File.Delete(strFileName)
End If

wBook.SaveAs(strFileName)
excel.Workbooks.Open(strFileName)
excel.Visible = True