ControlExtensions.AddComboBox Method (ControlCollection, Double, Double, Double, Double, String)
Adds a new ComboBox control to the worksheet in the specified size and location.
Namespace: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel.v4.0.Utilities (in Microsoft.Office.Tools.Excel.v4.0.Utilities.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function AddComboBox ( _
controls As ControlCollection, _
left As Double, _
top As Double, _
width As Double, _
height As Double, _
name As String _
) As ComboBox
public static ComboBox AddComboBox(
this ControlCollection controls,
double left,
double top,
double width,
double height,
string name
)
Parameters
controls
Type: Microsoft.Office.Tools.Excel.ControlCollectionThe collection to add the control to. Do not supply this parameter yourself. When you call this method on the collection returned by the Worksheet.Controls property (in an application-level project) or the WorksheetBase.Controls property (in a document-level project), this parameter is supplied automatically.
left
Type: System.DoubleThe distance in points between the left edge of the control and the left edge of the worksheet.
top
Type: System.DoubleThe distance in points between the top edge of the control and the top edge of the worksheet.
width
Type: System.DoubleThe width of the control in points.
height
Type: System.DoubleThe height of the control in points.
name
Type: System.StringThe name of the control.
Return Value
Type: Microsoft.Office.Tools.Excel.Controls.ComboBox
The ComboBox control that was added to the ControlCollection instance.
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
The AddComboBox method enables you to add ComboBox objects to the end of the ControlCollection. To remove a ComboBox control that was previously added programmatically, use the Remove method.
Examples
The following code example adds a ComboBox control to the top of the worksheet, adds two items to the combo box, and then selects the first item. To use this example, run it from the Sheet1 class in a document-level project.
Private Sub ExcelAddComboBox()
Dim ComboBox1 As Microsoft.Office.Tools.Excel. _
Controls.ComboBox = Me.Controls.AddComboBox( _
0, 0, 90.75, 15.75, "ComboBox1")
ComboBox1.Items.Add("First Item")
ComboBox1.Items.Add("Second Item")
ComboBox1.SelectedIndex = 0
End Sub
private void ExcelAddComboBox()
{
Microsoft.Office.Tools.Excel.Controls.ComboBox
comboBox1 = this.Controls.AddComboBox(0, 0,
90.75, 15.75, "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.