Set the
Format
property of
DefaultCellStyle
of the concerned
DataGridView
Column
to "MMM" as shown below, in a location before data is displayed, say in
Load
event of the
Form
DataGridView1.Columns(ColumnIndex).DefaultCellStyle.Format = "MMM"
Alternatively, this can be set in the designer by right clicking on the
DataGridView
selecting the
EditColumns
menu option. Then selecting the Column concerned in the list of columns and setting the "MMM"
DefaultCellStyle
in the
propertygrid
.