Use Clipboard.GetDataObject() which will return an IDataObject.
Retrieve stored data from an IDataObject by calling the GetData method and specifying the data format in the format parameter. Set the autoConvert parameter to false to retrieve only data that was stored in the specified format. To convert the stored data to the specified format, set autoConvert to true, or do not use autoConvert.
To determine the formats of the data stored in an IDataObject, use the following IDataObject methods.
Call the GetFormats method to retrieve an array of all the formats in which the data is available. Set the autoConvert parameter to false to get only the formats in which the data is stored. To get all the formats in which the data is available, set autoConvert to true, or do not use this parameter.
Call the GetDataPresent method to determine whether stored data is available in a certain format. If you do not want stored data to be converted to the specified format, set the autoConvert parameter to false.
Hope this helps.
Ref: IDataObject Interface
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