This documentation is archived and is not being maintained.

Splitter.MinSize Property

Gets or sets the minimum distance that must remain between the splitter control and the container edge that the control is docked to. Splitter.MinSize has been replaced by SplitContainer.Panel1MinSize and SplitContainer.Panel2MinSize and is provided only for compatibility with previous versions.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public int MinSize { get; set; }

Property Value

Type: System.Int32
The minimum distance, in pixels, between the Splitter control and the container edge that the control is docked to. The default is 25.

For a horizontal Splitter control (a Splitter control docked to the top or bottom of a container), this value is the minimum height of the resizable control. For a vertical Splitter control (a Splitter control docked to the left or right of a container), this value is the minimum width of the resizable control. The user cannot move the splitter past the limit specified by this property.


If the MinSize property is set to a negative value, the property value is reset to 0.

The following code example uses a Splitter control in combination with TreeView and ListView controls to create a window similar to Windows Explorer. To identify the TreeView and ListView controls, nodes and items are added to both controls. The example uses the MinExtra and MinSize properties of the Splitter to prevent the TreeView or ListView control from being sized too small or too large. This example requires that the method created in this example is defined within a Form and that the method is called from the constructor of the Form.

		private void CreateMySplitControls()
			// Create TreeView, ListView, and Splitter controls.
			TreeView treeView1 = new TreeView();
			ListView listView1 = new ListView();
			Splitter splitter1 = new Splitter();

			// Set the TreeView control to dock to the left side of the form.
			treeView1.Dock = DockStyle.Left;
			// Set the Splitter to dock to the left side of the TreeView control.
			splitter1.Dock = DockStyle.Left;
			// Set the minimum size the ListView control can be sized to.
			splitter1.MinExtra = 100;
			// Set the minimum size the TreeView control can be sized to.
			splitter1.MinSize = 75;
			// Set the ListView control to fill the remaining space on the form.
			listView1.Dock = DockStyle.Fill;
			// Add a TreeView and a ListView item to identify the controls on the form.
            treeView1.Nodes.Add("TreeView Node");
            listView1.Items.Add("ListView Item");

			// Add the controls in reverse order to the form to ensure proper location.
			this.Controls.AddRange(new Control[]{listView1, splitter1, treeView1});

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.