Modifier

Partager via

Clipboard.ContainsText Method

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

Indicates whether there is text data on the Clipboard.

Overloads

ContainsText()

Indicates whether there is data on the Clipboard in the Text or UnicodeText format, depending on the operating system.
ContainsText(TextDataFormat)

Indicates whether there is text data on the Clipboard in the format indicated by the specified TextDataFormat value.

ContainsText()

Indicates whether there is data on the Clipboard in the Text or UnicodeText format, depending on the operating system.

public:
 static bool ContainsText();
public static bool ContainsText ();
static member ContainsText : unit -> bool
Public Shared Function ContainsText () As Boolean

Returns

Boolean

true if there is text data on the Clipboard; otherwise, false.

Exceptions

ExternalException

The Clipboard could not be cleared. This typically occurs when the Clipboard is being used by another process.

ThreadStateException

The current thread is not in single-threaded apartment (STA) mode. Add the STAThreadAttribute to your application's Main method.

Examples

The following example demonstrates an overload of the ContainsText method that is similar to this overload.

// Demonstrates SetText, ContainsText, and GetText.
public String SwapClipboardHtmlText(String replacementHtmlText)
{
    String returnHtmlText = null;
    if (Clipboard.ContainsText(TextDataFormat.Html))
    {
        returnHtmlText = Clipboard.GetText(TextDataFormat.Html);
        Clipboard.SetText(replacementHtmlText, TextDataFormat.Html);
    }
    return returnHtmlText;
}

' Demonstrates SetText, ContainsText, and GetText.
Public Function SwapClipboardHtmlText( _
    ByVal replacementHtmlText As String) As String

    Dim returnHtmlText As String = Nothing

    If (Clipboard.ContainsText(TextDataFormat.Html)) Then
        returnHtmlText = Clipboard.GetText(TextDataFormat.Html)
        Clipboard.SetText(replacementHtmlText, TextDataFormat.Html)
    End If

    Return returnHtmlText

End Function

Remarks

This method checks for the presence of data in the UnicodeText format on Windows XP Home Edition, Windows XP Professional, Windows Server 2003 and Windows 2000. Otherwise, this method checks for the presence of data in the Text format.

Use this method to determine whether the Clipboard contains text data before retrieving it with the GetText method.

Note

The Clipboard class can only be used in threads set to single thread apartment (STA) mode. To use this class, ensure that your Main method is marked with the STAThreadAttribute attribute.

See also

Applies to

ContainsText(TextDataFormat)

Indicates whether there is text data on the Clipboard in the format indicated by the specified TextDataFormat value.

public:
 static bool ContainsText(System::Windows::Forms::TextDataFormat format);
public static bool ContainsText (System.Windows.Forms.TextDataFormat format);
static member ContainsText : System.Windows.Forms.TextDataFormat -> bool
Public Shared Function ContainsText (format As TextDataFormat) As Boolean

Parameters

format
TextDataFormat

One of the TextDataFormat values.

Returns

Boolean

true if there is text data on the Clipboard in the value specified for format; otherwise, false.

Exceptions

ExternalException

The Clipboard could not be cleared. This typically occurs when the Clipboard is being used by another process.

ThreadStateException

The current thread is not in single-threaded apartment (STA) mode. Add the STAThreadAttribute to your application's Main method.

InvalidEnumArgumentException

format is not a valid TextDataFormat value.

Examples

The following example demonstrates this member.

// Demonstrates SetText, ContainsText, and GetText.
public String SwapClipboardHtmlText(String replacementHtmlText)
{
    String returnHtmlText = null;
    if (Clipboard.ContainsText(TextDataFormat.Html))
    {
        returnHtmlText = Clipboard.GetText(TextDataFormat.Html);
        Clipboard.SetText(replacementHtmlText, TextDataFormat.Html);
    }
    return returnHtmlText;
}

' Demonstrates SetText, ContainsText, and GetText.
Public Function SwapClipboardHtmlText( _
    ByVal replacementHtmlText As String) As String

    Dim returnHtmlText As String = Nothing

    If (Clipboard.ContainsText(TextDataFormat.Html)) Then
        returnHtmlText = Clipboard.GetText(TextDataFormat.Html)
        Clipboard.SetText(replacementHtmlText, TextDataFormat.Html)
    End If

    Return returnHtmlText

End Function

Remarks

Use this method to determine whether the Clipboard contains text data before retrieving it with the GetText method.

Note

The Clipboard class can only be used in threads set to single thread apartment (STA) mode. To use this class, ensure that your Main method is marked with the STAThreadAttribute attribute.

See also

Applies to