I have TextBox I need to format the text if it is put in ctrl + v
I tried:
String str = Clipboard.GetText();
(sender as TextBox).Text += str.Replace("\r\n\r\n", "\r\n");
but this code throws an exception
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10And the exception is...? (Please read tinyurl.com/so-hints)Jon Skeet– Jon Skeet2011-01-10 16:07:11 +00:00Commented Jan 10, 2011 at 16:07
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1So now the question is simply a duplicate of your other one, effectively...Jon Skeet– Jon Skeet2011-01-10 17:14:34 +00:00Commented Jan 10, 2011 at 17:14
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possible duplicate of Why doesn't Clipboard.GetText work?Jon Skeet– Jon Skeet2011-01-10 17:14:46 +00:00Commented Jan 10, 2011 at 17:14
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3 Answers
Format the text at the TextChanged event handler.
Update after comment:
You don't need to do anything, just handle the textchange event:
XAML:
<TextBox x:Name="tbTarget" TextChanged="tbTarget_TextChanged" />
Code:
void tbTarget_TextChanged(object sender, TextChangedEventArgs e)
{
Dim tb = (TextBox)sender;
tb.Text = tb.Text.ToUpper();
}
If the TextBox is only meant for text pasting, cosider setting its IsReadOnly property to true.
Update after last comment:
Add the following to your code class:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataObject.AddPastingHandler(tb,
new DataObjectPastingEventHandler(tb_Pasting));
}
private void tb_Pasting(object sender, DataObjectPastingEventArgs e)
{
if (e.SourceDataObject.GetDataPresent(DataFormats.Text))
{
var text =
(string)e.SourceDataObject.GetData(DataFormats.Text) ?? string.Empty;
e.DataObject = new DataObject(DataFormats.Text, text.ToUpper());
}
}
}
answered Jan 10, 2011 at 16:33
Shimmy Weitzhandler
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3 Comments
Mediator
Yes, but i dont't get String... this error stackoverflow.com/questions/4648718/…
eigenein
@simply denis, you don't need Clipboard.GetText in the Shimmy's solution.
Mediator
no I need edit ONLY format the text if it is put in ctrl + v
I have TextBox I need to format the text if it is put in ctrl + v
Consider handling TextChanged event?
Comments
First you have to capture Paste event by monitoring windows messages.
Following thing not tested.
private const int WM_PASTE = 0x0302;
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_PASTE)
{
//Paste Event
}
}
In paste event you can get the current text in textBox. Here text pasted from the clipbord may inserted into textbox or it will still in the clipboard, You can test this easily.
If text are pasted, you can get by textBox1.Text or if not Clipboard.getText(). Then edit text and put it back into the textBox.
1 Comment
eigenein
Wouldn't it be terrible to use WndProc and pure windows messages handling in WPF application? :)