ControlExtensions.AddRichTextBox Method (ControlCollection, Range, String)

Adds a new RichTextBox control to the worksheet at the range specified.

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 AddRichTextBox ( _
    controls As ControlCollection, _
    range As Range, _
    name As String _
) As RichTextBox

public static RichTextBox AddRichTextBox(
    this ControlCollection controls,
    Range range,
    string name
)

Parameters

• controls
  Type: Microsoft.Office.Tools.Excel.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 Worksheet.Controls property (in an application-level project) or the WorksheetBase.Controls property (in a document-level project), this parameter is supplied automatically.

• range
  Type: Range

  A Range that provides the bounds for the control.

• name
  Type: System.String

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

Return Value

Type: Microsoft.Office.Tools.Excel.Controls.RichTextBox
The RichTextBox 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 or range argument is nulla null reference (Nothing in Visual Basic), or the name argument has zero length.
ControlNameAlreadyExistsException	A control with the same name is already in the ControlCollection instance.
InvalidRangeException	The range that was specified is not valid. Multi-area ranges cannot be used. The range should be on the same worksheet as the ControlCollection instance.

Remarks

The AddRichTextBox method enables you to add RichTextBox objects to the end of the ControlCollection. To remove a RichTextBox that was previously added programmatically, use the Remove method.

The control automatically resizes when the range is resized.

Examples

The following code example adds a RichTextBox control to cells A1 through B2, assigns text to the control, and then formats the text. To use this example, run it from the Sheet1 class in a document-level project.

Private Sub ExcelRangeAddRichTextBox()

    Dim RichTextBox1 As Microsoft.Office.Tools. _
        Excel.Controls.RichTextBox = Me.Controls. _
        AddRichTextBox(Me.Range("A1", "B2"), _
        "RichTextBox1")

    RichTextBox1.Text = "Sample text"
    RichTextBox1.Select(0, 6)
    RichTextBox1.SelectionFont = New Font( _
        "Times New Roman", 10, FontStyle.Bold)

End Sub

private void ExcelRangeAddRichTextBox()
{

    Microsoft.Office.Tools.Excel.Controls.RichTextBox
         richTextBox1 = this.Controls.AddRichTextBox(
         this.Range["A1", "B2"], "richTextBox1");
    richTextBox1.Text = "Sample text";
    richTextBox1.Select(0, 6);
    richTextBox1.SelectionFont = new Font("Times New Roman",
        10, FontStyle.Bold);
}

.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.

See Also

Reference

ControlExtensions Class

AddRichTextBox Overload

Microsoft.Office.Tools.Excel Namespace