InvalidOperationException - 结束编辑单元格并移动到另一个单元格时

I made a program in which I wanted to manually update the Data Grid View. -I have a Method to Refresh the DGV by clearing it and then reinserting the data. -Using the designer, I made an event handler for the DGV's CellEndEdit. Inside the Event Handler, the data gets updated & the DGV's custom refreshing method is called.I made a program in which I wanted to manually