[DXCategory("Layout")]
public float Height { get; set; }

<DXCategory("Layout")>
Public Property Height As Single

using DevExpress.Utils.Layout;
using DevExpress.XtraEditors;
using System.Windows.Forms;

namespace DXTablePanelDemo {
    public partial class Form1 : XtraForm
    {
        TablePanel tablePanel1;
        LabelControl labelControl1;
        public Form1()
        {
            InitializeComponent();

            // Create and configure a TablePanel.
            tablePanel1 = new TablePanel()
            {
                Name = "tablePanel1",
                Dock = DockStyle.Fill,
                ShowGrid = DevExpress.Utils.DefaultBoolean.True
            };

            // Add 3 columns.
            tablePanel1.Columns.Add(new TablePanelColumn(TablePanelEntityStyle.AutoSize, 0)); // Adjusts the column width to cell content. 
            tablePanel1.Columns.Add(new TablePanelColumn(TablePanelEntityStyle.Relative, 1)); // Takes 1 share of the remaining space.
            tablePanel1.Columns.Add(new TablePanelColumn(TablePanelEntityStyle.Relative, 2)); // Takes 2 shares of the remaining space.

            // Add 3 rows.
            tablePanel1.Rows.Add(new TablePanelRow(TablePanelEntityStyle.AutoSize, 0)); // Adjusts the row height to cell content.
            tablePanel1.Rows.Add(new TablePanelRow(TablePanelEntityStyle.Relative, 1)); // Takes 1 share of the remaining height.
            tablePanel1.Rows.Add(new TablePanelRow(TablePanelEntityStyle.Absolute, 60)); // Fixed height = 60 pixels.

            // Access the third row and modify its height.
            tablePanel1.Rows[0].Height = 80;

            labelControl1 = new LabelControl() { Text = "Cell [0; 0]" };
            tablePanel1.Controls.Add(labelControl1);

            // Display the labelControl1 in the top left cell.
            tablePanel1.SetCell(labelControl1, 0, 0);

            Controls.Add(tablePanel1);
        }
    }
}

Imports DevExpress.Utils.Layout
Imports DevExpress.XtraEditors
Imports System.Windows.Forms

Namespace DXTablePanelDemo
    Partial Public Class Form1
        Inherits XtraForm

        Private tablePanel1 As TablePanel
        Private labelControl1 As LabelControl

        Public Sub New()
            InitializeComponent()

            ' Create and configure a TablePanel.
            tablePanel1 = New TablePanel() With {
                .Name = "tablePanel1",
                .Dock = DockStyle.Fill,
                .ShowGrid = DevExpress.Utils.DefaultBoolean.True
            }

            ' Add 3 columns.
            tablePanel1.Columns.Add(New TablePanelColumn(TablePanelEntityStyle.AutoSize, 0)) ' Adjusts the column width to cell content.
            tablePanel1.Columns.Add(New TablePanelColumn(TablePanelEntityStyle.Relative, 1)) ' Takes 1 share of the remaining space.
            tablePanel1.Columns.Add(New TablePanelColumn(TablePanelEntityStyle.Relative, 2)) ' Takes 2 shares of the remaining space.

            ' Add 3 rows.
            tablePanel1.Rows.Add(New TablePanelRow(TablePanelEntityStyle.AutoSize, 0)) ' Adjusts the row height to cell content.
            tablePanel1.Rows.Add(New TablePanelRow(TablePanelEntityStyle.Relative, 1)) ' Takes 1 share of the remaining height.
            tablePanel1.Rows.Add(New TablePanelRow(TablePanelEntityStyle.Absolute, 60)) ' Fixed height = 60 pixels.

            ' Access the first row and modify its height.
            tablePanel1.Rows(0).Height = 80

            ' Create a label and add it to the panel.
            labelControl1 = New LabelControl() With {
                .Text = "Cell [0; 0]"
            }
            tablePanel1.Controls.Add(labelControl1)

            ' Display the labelControl1 in the top left cell.
            tablePanel1.SetCell(labelControl1, 0, 0)

            Controls.Add(tablePanel1)
        End Sub
    End Class
End Namespace