DataGridView.AdjustColumnHeaderBorderStyle Method

public:
 virtual System::Windows::Forms::DataGridViewAdvancedBorderStyle ^ AdjustColumnHeaderBorderStyle(System::Windows::Forms::DataGridViewAdvancedBorderStyle ^ dataGridViewAdvancedBorderStyleInput, System::Windows::Forms::DataGridViewAdvancedBorderStyle ^ dataGridViewAdvancedBorderStylePlaceholder, bool isFirstDisplayedColumn, bool isLastVisibleColumn);

public virtual System.Windows.Forms.DataGridViewAdvancedBorderStyle AdjustColumnHeaderBorderStyle(System.Windows.Forms.DataGridViewAdvancedBorderStyle dataGridViewAdvancedBorderStyleInput, System.Windows.Forms.DataGridViewAdvancedBorderStyle dataGridViewAdvancedBorderStylePlaceholder, bool isFirstDisplayedColumn, bool isLastVisibleColumn);

abstract member AdjustColumnHeaderBorderStyle : System.Windows.Forms.DataGridViewAdvancedBorderStyle * System.Windows.Forms.DataGridViewAdvancedBorderStyle * bool * bool -> System.Windows.Forms.DataGridViewAdvancedBorderStyle
override this.AdjustColumnHeaderBorderStyle : System.Windows.Forms.DataGridViewAdvancedBorderStyle * System.Windows.Forms.DataGridViewAdvancedBorderStyle * bool * bool -> System.Windows.Forms.DataGridViewAdvancedBorderStyle

Public Overridable Function AdjustColumnHeaderBorderStyle (dataGridViewAdvancedBorderStyleInput As DataGridViewAdvancedBorderStyle, dataGridViewAdvancedBorderStylePlaceholder As DataGridViewAdvancedBorderStyle, isFirstDisplayedColumn As Boolean, isLastVisibleColumn As Boolean) As DataGridViewAdvancedBorderStyle

A DataGridViewAdvancedBorderStyle that represents the border style for the current column header.

The following code example demonstrates how to override the AdjustColumnHeaderBorderStyle method to customize the borders of the column header cells. This code example is part of a larger example provided for the DataGridViewAdvancedBorderStyle class.

public override DataGridViewAdvancedBorderStyle AdjustColumnHeaderBorderStyle(
    DataGridViewAdvancedBorderStyle dataGridViewAdvancedBorderStyleInput,
    DataGridViewAdvancedBorderStyle dataGridViewAdvancedBorderStylePlaceHolder,
    bool firstDisplayedColumn,
    bool lastVisibleColumn)
{
    // Customize the left border of the first column header and the
    // bottom border of all the column headers. Use the input style for 
    // all other borders.
    dataGridViewAdvancedBorderStylePlaceHolder.Left = firstDisplayedColumn ?
        DataGridViewAdvancedCellBorderStyle.OutsetDouble :
        DataGridViewAdvancedCellBorderStyle.None;
    dataGridViewAdvancedBorderStylePlaceHolder.Bottom =
        DataGridViewAdvancedCellBorderStyle.Single;

    dataGridViewAdvancedBorderStylePlaceHolder.Right =
        dataGridViewAdvancedBorderStyleInput.Right;
    dataGridViewAdvancedBorderStylePlaceHolder.Top =
        dataGridViewAdvancedBorderStyleInput.Top;

    return dataGridViewAdvancedBorderStylePlaceHolder;
}

    Public Overrides Function AdjustColumnHeaderBorderStyle( _
        ByVal dataGridViewAdvancedBorderStyleInput As DataGridViewAdvancedBorderStyle, _
        ByVal dataGridViewAdvancedBorderStylePlaceHolder As DataGridViewAdvancedBorderStyle, _
        ByVal firstDisplayedColumn As Boolean, ByVal lastVisibleColumn As Boolean) _
        As DataGridViewAdvancedBorderStyle

        ' Customize the left border of the first column header and the
        ' bottom border of all the column headers. Use the input style for 
        ' all other borders.
        If firstDisplayedColumn Then
            dataGridViewAdvancedBorderStylePlaceHolder.Left = _
                DataGridViewAdvancedCellBorderStyle.OutsetDouble
        Else
            dataGridViewAdvancedBorderStylePlaceHolder.Left = _
                DataGridViewAdvancedCellBorderStyle.None
        End If

        With dataGridViewAdvancedBorderStylePlaceHolder
            .Bottom = DataGridViewAdvancedCellBorderStyle.Single
            .Right = dataGridViewAdvancedBorderStyleInput.Right
            .Top = dataGridViewAdvancedBorderStyleInput.Top
        End With

        Return dataGridViewAdvancedBorderStylePlaceHolder
    End Function
End Class

The DataGridView control internally calls the AdjustColumnHeaderBorderStyle method to determine the appearance of the borders for the column header cells. The DataGridView control typically uses the value of the AdvancedColumnHeadersBorderStyle property for the dataGridViewAdvancedBorderStyleInput parameter.

Override this method if you want to customize the appearance of the border on column header cells.

• DataGridView Control (Windows Forms)