Export (0) Print
Expand All

ControlBindingsCollection.Add Method (String, Object, String)

Creates a Binding using the specified control property name, data source, and data member, and adds it to the collection.

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

public Binding Add(
	string propertyName,
	Object dataSource,
	string dataMember


Type: System.String

The name of the control property to bind.

Type: System.Object

An Object that represents the data source.

Type: System.String

The property or list to bind to.

Return Value

Type: System.Windows.Forms.Binding
The newly created Binding.


The binding is null.


The propertyName is already data-bound.


The dataMember doesn't specify a valid member of the dataSource.

The DataSourceUpdateMode property of the Binding created by this overload of the Add method is set to the value of the DefaultDataSourceUpdateMode property.

Adding a Binding causes the CollectionChanged event to occur.

The following code example uses the Add method to add three Binding objects to the ControlBindingsCollection of a TextBox control. The ControlBindingsCollection is accessed through the DataBindings property of the Control class.

private void BindTextBoxProperties()
   // Clear the collection before adding new Binding objects.

   // Create a DataTable containing Color objects.
   DataTable t = MakeTable();

   /* Bind the Text, BackColor, and ForeColor properties
   to columns in the DataTable. */
   textBox1.DataBindings.Add("Text", t, "Text");
   textBox1.DataBindings.Add("BackColor", t, "BackColor");
   textBox1.DataBindings.Add("ForeColor", t, "ForeColor");

private DataTable MakeTable()
   /* Create a DataTable with three columns.
   Two of the columns contain Color objects. */

   DataTable t = new DataTable("Control");
   t.Columns.Add("BackColor", typeof(Color));
   t.Columns.Add("ForeColor", typeof(Color));

   // Add three rows to the table.
   DataRow r;

   r = t.NewRow();
   r["BackColor"] = Color.Blue;
   r["ForeColor"] = Color.Yellow;
   r["Text"] = "Yellow on Blue";

   r = t.NewRow();
   r["BackColor"] = Color.White;
   r["ForeColor"] = Color.Green;
   r["Text"] = "Green on white";

   r = t.NewRow();
   r["BackColor"] = Color.Orange;
   r["ForeColor"] = Color.Black;
   r["Text"] = "Black on Orange";

   return t;

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

© 2014 Microsoft