TableLayoutPanel Height Property not working

Question

        TableLayoutPanel t = new TableLayoutPanel();  
        t.RowStyles.Add(new RowStyle(SizeType.AutoSize));
        t.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100));
        t.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single;
        Label lbl = new Label();
        lbl.Margin = new System.Windows.Forms.Padding(20, 150, 20, 20);
        lbl.Text = "Hello";
        t.Controls.Add(lbl, 0, 0);
        this.Text = t.Size.Height.ToString();
        this.Controls.Add(t);

Why the t.Size.Height property gives me 100 always ?

Answer 1

The reason this always was returning 100 is that you need:

• AutoSize = true
• AutoSizeMode =AutoSizeMode.GrowAndShrink
• t.RowCount >= 1

• t.ColumnCount >= 1

    TableLayoutPanel t = new TableLayoutPanel(); t.AutoSize = true; //added t.AutoSizeMode =AutoSizeMode.GrowAndShrink; //added t.RowCount = 1; //added t.ColumnCount = 1; //added t.RowStyles.Add(new RowStyle(SizeType.AutoSize)); t.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100)); t.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single; Label lbl = new Label(); lbl.Margin = new System.Windows.Forms.Padding(20, 150, 20, 20); lbl.Text = "Hello"; t.Controls.Add(lbl, 0, 0); this.Controls.Add(t); this.Text = t.Size.Height.ToString(); //moved 

You also need to move your Height check to after you have added the Table to the form, else no layout operations will have happened.