Copy/Cut/Paste

[XmlAdoNewbie]

Hi All,
I would like to put a method for copy, cut and paste into my
application and this seems to be easy enough except that it's not
working the way i would like it to, I thought someone might be able to
give me a bit of insight and for that I say Thank You in advance!

this is what I have so far.

private void CutText()
{
try
{
Clipboard.SetDataObject(this.ActiveControl.Text);
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
}

private void PasteText()
{
try
{
// Create a new instance of the DataObject interface.
IDataObject data = Clipboard.GetDataObject();
// If the data is text, then set the text of the
// control to the text in the Clipboard.
if (data.GetDataPresent(DataFormats.Text))
this.ActiveControl.Text = data.GetDataDataFormats.Text).ToString();
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
}

private void CopyText()
{
try
{
Clipboard.SetDataObject(this.ActiveControl.Text);
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
}

Here is my problem.

Firstly, I am assuming that the "activecontrol" has a text property
which by all rights it may not. I haven't had an error yet however.

Secondly, I can copy and cut ALL the text in the activecontrol but i
can't copy or cut the "SelectedText" for instance, if my activecontrol
says "Hello World" i can't select "World" and just copy what i have
selected. It takes the whole string.. the same goes for cutting the
text.

If anyone has any insight about this that would be great. It seems
fairly trivial however I am just a beginner with C# and would like to
do it the "right" way!

Thank you
Erin

 

[DalePres]

How many controls do you have that might need to copy from or paste to? It
sounds like you must have several.

Dale

 

[=?windows-1252?Q?Marcin_Grze=3Bbski?=]

Hi,

If controls which have to provide Copy/Paste inherits from
*TextBoxBase* class then you can call their methods:
Copy(), Cut(), Paste() in other controls you should
provide your own methods.

Regards

Marcin

 

[Erin Sebastian]

So does this mean that i will have to have a separate function for each
control that i might want to copy from? how would you go about that?
Would you put the code for copy and paste into the gotfocus() event? I
was hoping to have one method that i could call when the copy, cut or
paste button was clicked.
I have a lot of controls that i want to be able to copy/cut and paste
from and they aren't all necessarily textboxes.
Thanks for your quick replies!!
Erin

 

[=?windows-1252?Q?Marcin_Grze=3Bbski?=]

So does this mean that i will have to have a separate function for each
control that i might want to copy from? how would you go about that?
Would you put the code for copy and paste into the gotfocus() event? I
was hoping to have one method that i could call when the copy, cut or
paste button was clicked.
I have a lot of controls that i want to be able to copy/cut and paste
from and they aren't all necessarily textboxes.

Let me show you something:

private void CopyText()
{
if( this.ActiveControl is TextBoxBase ) {
((TextBoxBase) this.ActiveControl).Copy();
}
else {
try
{
Clipboard.SetDataObject(this.ActiveControl.Text);
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
}
}

Pay attention that TextBoxBase support *Undo* method.

See You!

Marcin

 

[Erin Sebastian]

Thank you so much, that is Excellent. The only thing to do now is to be
able to copy or cut only the selected text. I tried to say:

((TextBoxBase) this.ActiveControl).SelectedText.Copy()

however the property SelectedText does not have a Copy() method. Any
ideas for this?

Erin

 

[=?windows-1252?Q?Marcin_Grze=3Bbski?=]

Hi Erin,

Thank you so much, that is Excellent. The only thing to do now is to be
able to copy or cut only the selected text. I tried to say:

((TextBoxBase) this.ActiveControl).SelectedText.Copy()

however the property SelectedText does not have a Copy() method. Any
ideas for this?

You don't need to *point* at SelectedText if you are using
TextBoxBase's *Copy()* method.

private void textBoxItem_KeyDown(object sender
, System.Windows.Forms.KeyEventArgs ea) {
TextBoxBase txtBoxItem=(TextBoxBase) sender;
if( ea.Control ) {
switch( ea.KeyCode ) {
case Keys.C:
txtBoxItem.Copy();
MessageBox.Show( this
, String.Format("Copied text=\'{0}\'"
,
Clipboard.GetDataObject().GetData(typeof(string)) ) );
break;
}
}
}


You should write your own copy/cut/paste methods for controls other
than *TextBoxBase*-based (e.g. ComboBoxes). Then you can use the
*SelectedText* or *SelectionStart* and *SelectionLength* properties.

Marcin