How to bind Gridview header dynmaically from table

CREATE TABLE [dbo].[mst_Department](
	[Id] [int] NOT NULL,
	[DeptCode] [varchar](20) NOT NULL,
	[DeptName] [varchar](100) NOT NULL,
	[HOD_Id] [varchar](max) NOT NULL,
	[DelStatus] [varchar](1) NOT NULL,
	[mst_Company_Id] [int] NOT NULL,
 CONSTRAINT [PK_mst_Department] PRIMARY KEY CLUSTERED 
(
	[Id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

Above table is Department master table