ControlExtensions.AddComboBox Method (ControlCollection, Single, Single, Single, Single, String)

Artikel
01/07/2014

Adds a new ComboBox control to the document in the specified size and location.

Namespace: Microsoft.Office.Tools.Word
Assembly: Microsoft.Office.Tools.Word.v4.0.Utilities (in Microsoft.Office.Tools.Word.v4.0.Utilities.dll)

Syntax

'Declaration
<ExtensionAttribute> _
Public Shared Function AddComboBox ( _
    controls As ControlCollection, _
    left As Single, _
    top As Single, _
    width As Single, _
    height As Single, _
    name As String _
) As ComboBox

public static ComboBox AddComboBox(
    this ControlCollection controls,
    float left,
    float top,
    float width,
    float height,
    string name
)

Parameters

controls
Type: Microsoft.Office.Tools.Word.ControlCollection

The collection to add the control to. Do not supply this parameter yourself. When you call this method on the collection returned by the Document.Controls property (in an application-level project) or the DocumentBase.Controls property (in a document-level project), this parameter is supplied automatically.

left
Type: System.Single

The distance in points between the left edge of the control and the left edge of the document.

top
Type: System.Single

The distance in points between the top edge of the control and the top edge of the document.

width
Type: System.Single

The width of the control in points.

height
Type: System.Single

The height of the control in points.

name
Type: System.String

The name that can be used to index the control in the ControlCollection instance.

Return Value

Type: Microsoft.Office.Tools.Word.Controls.ComboBox
The control that was added to the document.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ControlCollection. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Exceptions

Exception	Condition
ArgumentNullException	The name argument is nulla null reference (Nothing in Visual Basic) or has zero length.
ControlNameAlreadyExistsException	A control with the same name is already in the ControlCollection instance.

Remarks

This method enables you to add ComboBox objects to the end of the ControlCollection.

To remove a ComboBox that was added programmatically, use the Remove method.

Examples

The following code example adds a ComboBox control to the start of the document, adds two items to the combo box, and then selects the first item. To use this example, run it from the ThisDocument class in a document-level project.

Private Sub WordAddComboBox()
    Me.Paragraphs(1).Range.InsertParagraphBefore()
    Dim ComboBox1 As Microsoft.Office.Tools.Word.Controls. _
        ComboBox = Me.Controls.AddComboBox(0, 0, 90.75F, _
        15.75F, "ComboBox1")
    ComboBox1.Items.Add("First Item")
    ComboBox1.Items.Add("Second Item")
    ComboBox1.SelectedIndex = 0
End Sub

private void WordAddComboBox()
{
    this.Paragraphs[1].Range.InsertParagraphBefore();
    Microsoft.Office.Tools.Word.Controls.ComboBox
        comboBox1 = this.Controls.AddComboBox( 0, 0,
        90.75F, 15.75F, "comboBox1");
    comboBox1.Items.Add("First Item");
    comboBox1.Items.Add("Second Item");
    comboBox1.SelectedIndex = 0;
}

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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