Send output to stdin of an already opened CMD via .Net

[77maxmustermann]

So I'm using a cmd to set up a vi and make it run automatically, when getting feed back through system Exec I would like to get it in the already open CMD and not generate a new one. I was told to use .Net . So I create a protype program that would find the running cmd and reference it to then send as standart input the feedback on the program. Sadly I keep getting this error and don't know how to fix it.

You'll find it attached to this message.

[aputman]

What is the error?  I just did a quick search for how to use the StandardInput and it looks like there is a property called RedirectStandardInput that has to be set true before it can be used.  The default is false. 

https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.process.standardinput?view=netframewo...

https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.processstartinfo.redirectstandardinpu...