This is a common task. Here is a google search with many examples: winform datagrid combobox selecteditem
Or you can ask ChatGpt this question:
I need to get the selected value of a ComboBox in a winform DataGridView using VB.Net?
ChatGpt reply starts with:
To get the selected value of a ComboBox in a WinForms DataGridView using VB.NET, you can handle the CellValueChanged event of the DataGridView and check if the cell that changed is the ComboBox cell. Here's a step-by-step guide on how to do this: