How to avoid docked controls from being placed on Form controls in WinForms Docking Manager?

//Docking client panel initialization
private Syncfusion.Windows.Forms.Tools.DockingClientPanel dockingClientPanel1;
this.dockingClientPanel1 = new Syncfusion.Windows.Forms.Tools.DockingClientPanel();
this.dockingClientPanel1.SuspendLayout();
//To set dock control
this.dockingManager1.DockControl(this.panel1, this, Syncfusion.Windows.Forms.Tools.DockingStyle.Left, 200);
this.dockingManager1.DockControl(this.panel2, this, Syncfusion.Windows.Forms.Tools.DockingStyle.Right, 200);
//To set docking client panel properties
this.dockingClientPanel1.BackColor = System.Drawing.SystemColors.ActiveBorder;
this.dockingClientPanel1.Controls.Add(this.button1);
this.dockingClientPanel1.Location = new System.Drawing.Point(423, 35);
this.dockingClientPanel1.Name = "dockingClientPanel1";
this.dockingClientPanel1.Size = new System.Drawing.Size(200, 200);
this.dockingClientPanel1.TabIndex = 0;
//Add the docking client panel to the form
this.Controls.Add(this.dockingClientPanel1);
this.dockingClientPanel1.ResumeLayout(false);

Dim dockingClientPanel1 As Syncfusion.Windows.Forms.Tools.DockingClientPanel
Me.dockingClientPanel1 = New Syncfusion.Windows.Forms.Tools.DockingClientPanel
Me.dockingClientPanel1.SuspendLayout()
'To set dock control
Me.dockingManager1.DockControl(Me.panel1, Me, Syncfusion.Windows.Forms.Tools.DockingStyle.Left, 200)
Me.dockingManager1.DockControl(Me.panel2, Me, Syncfusion.Windows.Forms.Tools.DockingStyle.Right, 200)
'To set docking client panel properties
Me.dockingClientPanel1.BackColor = System.Drawing.SystemColors.ActiveBorder
Me.dockingClientPanel1.Location = New System.Drawing.Point(423, 35)
Me.dockingClientPanel1.Name = "dockingClientPanel1"
Me.dockingClientPanel1.Size = New System.Drawing.Size(200, 200)
Me.dockingClientPanel1.TabIndex = 0
'Add the docking client panel to the form
Me.Controls.Add(Me.dockingClientPanel1)
Me.dockingClientPanel1.ResumeLayout(False)