ControlCollection.AddComboBoxContentControl Method (ContentControl, String)

Adds a new ComboBoxContentControl to the collection. The new control is based on a native content control that is already in the document.

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

Syntax

'Declaration
Function AddComboBoxContentControl ( _
    contentControl As ContentControl, _
    name As String _
) As ComboBoxContentControl

ComboBoxContentControl AddComboBoxContentControl(
    ContentControl contentControl,
    string name
)

Parameters

• contentControl
  Type: Microsoft.Office.Interop.Word.ContentControl
  The Microsoft.Office.Interop.Word.ContentControl that is the basis for the new control.

• name
  Type: System.String
  The name of the new control.

Return Value

Type: Microsoft.Office.Tools.Word.ComboBoxContentControl
The ComboBoxContentControl that was added to the document.

Exceptions

Exception	Condition
ArgumentNullException	contentControl is nulla null reference (Nothing in Visual Basic). -or- name is nulla null reference (Nothing in Visual Basic) or has zero length.
ControlNameAlreadyExistsException	A control with the same name is already in the ControlCollection.
ArgumentException	contentControl is not a building block gallery (that is, the Type property of contentControl does not have the value Microsoft.Office.Interop.Word.WdContentControlType.wdContentControlComboBox).

Remarks

Use this method to add a new ComboBoxContentControl that is based on a native content control in the document at run time. This is useful when you create a ComboBoxContentControl at run time, and you want to recreate the same control the next time the document is opened. For more information, see Adding Controls to Office Documents at Run Time.

Examples

The following code example creates a new ComboBoxContentControl for every native combo box that is already in the document.

This version is for a document-level customization. To use this code, paste it into the ThisDocument class in your project, and call the CreateComboBoxControlsFromNativeControls method from the ThisDocument_Startup method.

Private comboBoxControls As New System.Collections.Generic.List _
        (Of Microsoft.Office.Tools.Word.ComboBoxContentControl)

Private Sub CreateComboBoxControlsFromNativeControls()
    If Me.ContentControls.Count <= 0 Then
        Return
    End If

    Dim count As Integer = 0
    For Each nativeControl As Word.ContentControl In Me.ContentControls
        If nativeControl.Type = Word.WdContentControlType.wdContentControlComboBox Then
            count += 1
            Dim tempControl As Microsoft.Office.Tools.Word.ComboBoxContentControl = _
                Me.Controls.AddComboBoxContentControl(nativeControl, _
                "VSTOComboBoxContentControl" + count.ToString())
            comboBoxControls.Add(tempControl)
        End If
    Next nativeControl
End Sub

private System.Collections.Generic.List
    <Microsoft.Office.Tools.Word.ComboBoxContentControl> comboBoxControls;

private void CreateComboBoxControlsFromNativeControls()
{
    if (this.ContentControls.Count <= 0)
        return;

    comboBoxControls = new System.Collections.Generic.List
        <Microsoft.Office.Tools.Word.ComboBoxContentControl>();
    int count = 0;

    foreach (Word.ContentControl nativeControl in this.ContentControls)
    {
        if (nativeControl.Type == Word.WdContentControlType.wdContentControlComboBox)
        {
            count++;
            Microsoft.Office.Tools.Word.ComboBoxContentControl tempControl =
                this.Controls.AddComboBoxContentControl(nativeControl,
                "VSTOComboBoxContentControl" + count.ToString());
            comboBoxControls.Add(tempControl);
        }
    }
}

This version is for an application-level add-in that targets the .NET Framework 4. To use this code, paste it into the ThisAddIn class in your project, and call the CreateComboBoxControlsFromNativeControls method from the ThisAddIn_Startup method.

Private comboBoxControls As New System.Collections.Generic.List _
        (Of Microsoft.Office.Tools.Word.ComboBoxContentControl)

Private Sub CreateComboBoxControlsFromNativeControls()
    If Me.Application.ActiveDocument Is Nothing Then
        Return
    End If

    Dim vstoDoc As Document = Globals.Factory.GetVstoObject(Me.Application.ActiveDocument)
    If vstoDoc.ContentControls.Count <= 0 Then
        Return
    End If

    Dim count As Integer = 0
    For Each nativeControl As Word.ContentControl In vstoDoc.ContentControls
        If nativeControl.Type = Word.WdContentControlType.wdContentControlComboBox Then
            count += 1
            Dim tempControl As Microsoft.Office.Tools.Word.ComboBoxContentControl = _
                vstoDoc.Controls.AddComboBoxContentControl(nativeControl, _
                "VSTOComboBoxContentControl" + count.ToString())
            comboBoxControls.Add(tempControl)
        End If
    Next nativeControl
End Sub

private System.Collections.Generic.List
    <Microsoft.Office.Tools.Word.ComboBoxContentControl> comboBoxControls;

private void CreateComboBoxControlsFromNativeControls()
{
    if (this.Application.ActiveDocument == null)
        return;

    Document vstoDoc = Globals.Factory.GetVstoObject(this.Application.ActiveDocument);
    if (vstoDoc.ContentControls.Count <= 0)
        return;

    comboBoxControls = new System.Collections.Generic.List
        <Microsoft.Office.Tools.Word.ComboBoxContentControl>();
    int count = 0;

    foreach (Word.ContentControl nativeControl in vstoDoc.ContentControls)
    {
        if (nativeControl.Type == Word.WdContentControlType.wdContentControlComboBox)
        {
            count++;
            Microsoft.Office.Tools.Word.ComboBoxContentControl tempControl =
                vstoDoc.Controls.AddComboBoxContentControl(nativeControl,
                "VSTOComboBoxContentControl" + count.ToString());
            comboBoxControls.Add(tempControl);
        }
    }
}

The following code example creates a new ComboBoxContentControl for every native combo box that the user adds to the document.

This version is for a document-level customization. To use this code, paste it into the ThisDocument class in your project. For C#, you must also attach the ThisDocument_ComboBoxContentControlAfterAdd event handler to the ContentControlAfterAdd event of the ThisDocument class.

Private Sub ThisDocument_ComboBoxContentControlAfterAdd(ByVal NewContentControl As Word.ContentControl, _
    ByVal InUndoRedo As Boolean) Handles Me.ContentControlAfterAdd

    If NewContentControl.Type = Word.WdContentControlType.wdContentControlComboBox Then
        Me.Controls.AddComboBoxContentControl(NewContentControl, _
            "ComboBoxControl" + NewContentControl.ID)
    End If
End Sub

void ThisDocument_ComboBoxContentControlAfterAdd(Word.ContentControl NewContentControl, bool InUndoRedo)
{
    if (NewContentControl.Type == Word.WdContentControlType.wdContentControlComboBox)
    {
        this.Controls.AddComboBoxContentControl(NewContentControl,
            "ComboBoxControl" + NewContentControl.ID);
    }
}

This version is for an application-level add-in that targets the .NET Framework 4. To use this code, paste it into the ThisAddIn class in your project. Also, you must attach the ActiveDocument_ComboBoxContentControlAfterAdd event handler to the ContentControlAfterAdd event of the active document.

Private Sub ActiveDocument_ComboBoxContentControlAfterAdd( _
    ByVal NewContentControl As Word.ContentControl, _
    ByVal InUndoRedo As Boolean)

    Dim vstoDoc As Document = Globals.Factory.GetVstoObject(Me.Application.ActiveDocument)
    If NewContentControl.Type = Word.WdContentControlType. _
        wdContentControlComboBox Then
        vstoDoc.Controls.AddComboBoxContentControl(NewContentControl, _
            "ComboBoxControl" + NewContentControl.ID)
    End If
End Sub

void ActiveDocument_ComboBoxContentControlAfterAdd(
    Word.ContentControl NewContentControl, bool InUndoRedo)
{
    Document vstoDoc = Globals.Factory.GetVstoObject(this.Application.ActiveDocument);
    if (NewContentControl.Type == Word.WdContentControlType.wdContentControlComboBox)
    {
        vstoDoc.Controls.AddComboBoxContentControl(NewContentControl,
            "ComboBoxControl" + NewContentControl.ID);
    }
}

.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

ControlCollection Interface

AddComboBoxContentControl Overload

Microsoft.Office.Tools.Word Namespace

Other Resources

Adding Controls to Office Documents at Run Time

Helper Methods for Host Controls

How to: Add Content Controls to Word Documents