Copy from string variable and Paste Data into Textbox WPF

Asked Dec 17 '19 at 09:45

Active Dec 17 '19 at 09:53

Viewed 204 times

I am trying to copy data from a string variable in c# like below,

Clipboard.SetText(StringValue));

and then trying to paste it using,

SendKeys.Send("^{v}");

but this is not working it throws ThreadStateException exception and when i try to use STA Thread like below,

Thread thread = new Thread(() => Clipboard.SetText(Stringvalue));
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
thread.Join();
SendKeys.Send("^{v}");

it gives me error at SendKeys.Send line about InvalidOperationException.

I have also tried Sendkeys.SendWait("^{v}"); but it does not work either.

NOTE:

Please note that my target application is WPF and I am writing code on another application to paste the value inside my target WPF application.

asked Dec 17 '19 at 09:45

Faran Saleem

Why are you setting the thread as STA? – Martin Dec 17 '19 at 09:47
In fact, why are you using a thread at all in this situation? – Martin Dec 17 '19 at 09:48
by the way, what is your actual requirement? why are you depending on clipboard and threads to paste something ? – sujith karivelil Dec 17 '19 at 09:49
I want to copy from a variable and paste into a textbox of another application. – Faran Saleem Dec 17 '19 at 09:50
@FaranSaleem: then what's the role of thread here? – sujith karivelil Dec 17 '19 at 09:51
@Martin I am using STA because Clipboard was having issues it was throwing an error – Faran Saleem Dec 17 '19 at 09:52
I was checking this [link](https://stackoverflow.com/questions/17762037/current-thread-must-be-set-to-single-thread-apartment-sta-error-in-copy-stri) – Faran Saleem Dec 17 '19 at 09:53
SendKeys.Send("^v"); instead https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.sendkeys.send?redirectedfrom=MSDN&view=netframework-4.8#System_Windows_Forms_SendKeys_Send_System_String_ – MarioWu Dec 19 '19 at 00:26
`To specify keys combined with any combination of the SHIFT, CTRL, and ALT keys, precede the key code with one or more of the following codes.` – MarioWu Dec 19 '19 at 00:26

Copy from string variable and Paste Data into Textbox WPF

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