How to get gridview cell value in RepositoryItemGridLookupEdit_ValueChanged Event and set in TextEdit?

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C#

WinForms

Gridview

DevExpress

I want to get a cell value particular focused row and previous row ?? I tried this code,

object obj1 = gridView1.GetRowCellValue(gridView1.FocusedRowHandle - 1, gridView1.Columns["Each"]);
string str1= obj1.ToString();
textEdit1.Text = str1;


textEdit1.Text = gridView1.SetRowCellValue(gridView1.FocusedRowHandle, gridView1.Columns["Each"]);

but this code works for button but not work here in the RepositoryItemGridLookupEdit_ValueChanged Event or not work in the CustomUnboundDataEvent.

I want to get a cell value of gridview in Edit Value Change Event and then set in textEdit ? Help me.