Controlling pasting of data in RichTextBox

Question

Hi,

I would like to know if there is anyway to control data being pasted to the RichTextBox?  At present, pasted data is automatically handled and only on the OnTextChanged event can you make changes to pasted data.

Accessing the DataObject is futile as you can only add data and not modify any existing data inside the object.

 

Thank you,

Jaco

Answer 1

use the dataovject pasteeventhandler

 

you can now control pasting data into the richtextbox

 

rtb.AddHandler(DataObject.PastingEvent, new DataObjectPastingEventHandler(PasteEvent), true);

private void PasteEvent(object sender, DataObjectPastingEventArgs e)

{

}

Answer 2

I have tried that, but the object is still frozen.

Answer 3

create a new dataobject, copy all the passed formats + new formats and set it on the DataObjectPastingEventArgs 

 

private void PasteEvent(object sender, DataObjectPastingEventArgs e)

{

DataObject d = new DataObject();

d.SetData(DataFormats.Text, "HELLO");

e.DataObject = d;

}

Answer 4

Thank you very much.  It works perfectly.  Can't believe I didn't investigate the fact that the DataObject property itself

contains a setter as well