使用Excel (oledb)和c#向dataGridView显示输入在文本框中的数据

I need your help. I want to show all data based on number I input in textbox. Number that is inputted in textbox will be my threshold. I want to show all data in table "Reject" that more than my threshold to datagridview. Can anyone help me ? This is my code :I need your help. I want to show all data based