DataGridViewRow.GetPreferredHeight Method

public:
 virtual int GetPreferredHeight(int rowIndex, System::Windows::Forms::DataGridViewAutoSizeRowMode autoSizeRowMode, bool fixedWidth);

public virtual int GetPreferredHeight(int rowIndex, System.Windows.Forms.DataGridViewAutoSizeRowMode autoSizeRowMode, bool fixedWidth);

abstract member GetPreferredHeight : int * System.Windows.Forms.DataGridViewAutoSizeRowMode * bool -> int
override this.GetPreferredHeight : int * System.Windows.Forms.DataGridViewAutoSizeRowMode * bool -> int

Public Overridable Function GetPreferredHeight (rowIndex As Integer, autoSizeRowMode As DataGridViewAutoSizeRowMode, fixedWidth As Boolean) As Integer

The ideal height of the row, in pixels.

The following code example uses the GetPreferredHeight method to determine the new padding for a row that has been resized. This code example is part of a larger example provided in How to: Customize the Appearance of Rows in the Windows Forms DataGridView Control.

// Adjusts the padding when the user changes the row height so that 
// the normal cell content is fully displayed and any extra
// height is used for the content that spans multiple columns.
void dataGridView1_RowHeightChanged(object sender,
    DataGridViewRowEventArgs e)
{
    // Calculate the new height of the normal cell content.
    Int32 preferredNormalContentHeight =
        e.Row.GetPreferredHeight(e.Row.Index, 
        DataGridViewAutoSizeRowMode.AllCellsExceptHeader, true) -
        e.Row.DefaultCellStyle.Padding.Bottom;

    // Specify a new padding.
    Padding newPadding = e.Row.DefaultCellStyle.Padding;
    newPadding.Bottom = e.Row.Height - preferredNormalContentHeight;
    e.Row.DefaultCellStyle.Padding = newPadding;
}

' Adjusts the padding when the user changes the row height so that 
' the normal cell content is fully displayed and any extra
' height is used for the content that spans multiple columns.
Sub dataGridView1_RowHeightChanged(ByVal sender As Object, _
    ByVal e As DataGridViewRowEventArgs) _
    Handles dataGridView1.RowHeightChanged

    ' Calculate the new height of the normal cell content.
    Dim preferredNormalContentHeight As Int32 = _
        e.Row.GetPreferredHeight(e.Row.Index, _
        DataGridViewAutoSizeRowMode.AllCellsExceptHeader, True) - _
        e.Row.DefaultCellStyle.Padding.Bottom()

    ' Specify a new padding.
    Dim newPadding As Padding = e.Row.DefaultCellStyle.Padding
    newPadding.Bottom = e.Row.Height - preferredNormalContentHeight
    e.Row.DefaultCellStyle.Padding = newPadding

End Sub

This property is used by the content-based automatic sizing feature of the DataGridView control to determine the ideal height of a row. The rowIndex value lets you specify the actual row index of a shared row. (Shared rows have Index property values of -1.)

A fixedWidth parameter value of false calculates the row height based on calculated column widths that will achieve ideal cell height-to-width ratios.

For cell contents to wrap onto multiple lines, the cell style in effect for the cell must have a WrapMode property value of True.

For more information about automatic sizing, see Sizing Options in the Windows Forms DataGridView Control.

• DataGridView
• DataGridViewAutoSizeRowMode
• WrapMode
• GetPreferredWidth(DataGridViewAutoSizeColumnMode, Boolean)
• How to: Customize the Appearance of Rows in the Windows Forms DataGridView Control
• Sizing Options in the Windows Forms DataGridView Control
• Best Practices for Scaling the Windows Forms DataGridView Control