اینم کد ی که نوشتم
end_dateوsatrt_dateفیلد های داخل جدول تاریخ داخل جدول هستند
PrivateSub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
' sql = "select * from tbl_info_backup where" & msk_txt_serch.Text & "betwin start_date and end_date"
sql = "select * from tbl_info_backup where end_date>=" & msk_txt_serch.Text & "<=start_date'"
da_info_backup = New SqlDataAdapter(sql, cn)
ds_backup.Clear()
da_info_backup.Fill(ds_backup, "info_backup")
If dg_archive.Rows.Count <= 0 Then
MsgBox(" ", MsgBoxStyle.OkOnly, "")
Else
EndIf
EndSub