看看这里：扩展Windows窗体DataGridView控件的***实践 [ ^ ]并仔细阅读使用共享行部分;）

I am working in a Window application and I have one text box and a DataGridView control.
When I input a sum value in the text box that amount should added as a row in the DataGridView.

Have a look here: Best Practices for Scaling the Windows Forms DataGridView Control[^] and carefully read Using Shared Rows section ;)