DataGridView.AdjustColumnHeaderBorderStyle 方法

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

为当前正在绘制的 DataGridView 的列标题单元格调整 DataGridViewAdvancedBorderStyle。

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

参数

dataGridViewAdvancedBorderStyleInput

DataGridViewAdvancedBorderStyle

一个 DataGridViewAdvancedBorderStyle，它表示要修改的列标题边框样式。

dataGridViewAdvancedBorderStylePlaceholder

DataGridViewAdvancedBorderStyle

一个 DataGridViewAdvancedBorderStyle，用于存储对列标题边框样式进行的中间更改。

isFirstDisplayedColumn

Boolean

如果要指示当前正在绘制的 DataGridViewCell 位于 DataGridView 上显示的第一列中，则为 true；否则为 false。

isLastVisibleColumn

Boolean

如果要指示当前正在绘制的 DataGridViewCell 位于 Visible 属性设置为 true 的 DataGridView 中的最后一列，则为 true；否则为 false。

返回

DataGridViewAdvancedBorderStyle

一个 DataGridViewAdvancedBorderStyle，表示当前列标题的边框样式。

示例

下面的代码示例演示如何重写 AdjustColumnHeaderBorderStyle 方法来自定义列标题单元格的边框。 此代码示例是为 DataGridViewAdvancedBorderStyle 类提供的一个更大示例的一部分。

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

注解

控件 DataGridView 在内部调用 AdjustColumnHeaderBorderStyle 方法以确定列标题单元格边框的外观。 控件 DataGridView 通常使用 参数的 AdvancedColumnHeadersBorderStyle 属性 dataGridViewAdvancedBorderStyleInput 的值。

继承者说明

如果要自定义列标题单元格上边框的外观，请重写此方法。

另请参阅

• DataGridView 控件（Windows 窗体）