BindingSource.Add Method

Adds an existing item to the internal list.

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

public virtual int Add(
	Object value
)

Parameters

value
Type: System.Object

An Object to be added to the internal list.

Return Value

Type: System.Int32
The zero-based index at which value was added to the underlying list represented by the List property.

Implements

IList.Add(Object)

ExceptionCondition
InvalidOperationException

value differs in type from the existing items in the underlying list.

The Add method refers the call to the underlying list's Add method.

The internal list must contain homogenous types. If the DataSource property has not already been set, then the first object added to the list defines the type for the list.

This method raises the ListChanged event.

The following code example how to use the Add method. To run this example, paste the code into a Windows Form, and call the PopulateBindingSourceWithFonts method from the form's constructor.

public BindingSource bindingSource1 = new BindingSource();
TextBox box1 = new TextBox();

private void PopulateBindingSourceWithFonts()
{
    bindingSource1.CurrentChanged += new EventHandler(bindingSource1_CurrentChanged);
    bindingSource1.Add(new Font(FontFamily.Families[2], 8.0F));
    bindingSource1.Add(new Font(FontFamily.Families[4], 9.0F));
    bindingSource1.Add(new Font(FontFamily.Families[6], 10.0F));
    bindingSource1.Add(new Font(FontFamily.Families[8], 11.0F));
    bindingSource1.Add(new Font(FontFamily.Families[10], 12.0F));
    DataGridView view1 = new DataGridView();
    view1.DataSource = bindingSource1;
    view1.AutoGenerateColumns = true;
    view1.Dock = DockStyle.Top;
    this.Controls.Add(view1);
    box1.Dock = DockStyle.Bottom;
    box1.Text = "Sample Text";
    this.Controls.Add(box1);
    box1.DataBindings.Add("Text", bindingSource1, "Name");
    view1.Columns[7].DisplayIndex = 0;

}

void bindingSource1_CurrentChanged(object sender, EventArgs e)
{
    box1.Font = (Font)bindingSource1.Current;
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.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.

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