Hi JaeHyeong,
Thanks for contacting Syncfusion support.
Query: “If you input Up/Down Key, the value changes according to the Step value. Query 1. Can this function be prevented?”
We have analyzed your query and currently we do not have support to prevent the requested functionality. Workaround also not possible for the requested scenario.
Query2: “When using SfNumericTextBox in Templete of grid, if you input Up/Down Key, I want to move Cell focus up/down.”
We have analyzed your query and we can achieve your requirement in Grid by rendering the NumericTextBox control in EditTemplate to bind onkeyup event and calling EditCell() method in it (keyup event) to Edit the next/previous cell. But since the first query cannot be prevented. It will not be possible to maintain the original value one arrow keys.
By default, Enter Key and Shift + Enter Key in edit mode is used to move the cell / edit action up and downward direction in Grid. Please get back to us if you have further queries.
Regard,
Vignesh Natarajan