.net - How to pass optional parameters to a method in C#? -

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How to pass the optional parameters for a method in C #?

Suppose I have made a command called a command called Sendcommand.

) // List the files from the server {// code} else if (command == "STOR" + Path.GetFileName (uploadfilename)) // upload the file to the server {// code} else if ...}

Now I want to call this method in main mode like 

  Sendcommand ("STOR", filename); Sendcommand ("list"); // In this case I do not want to give the second parameter

How to get it?

Use the paramet attribute: 

  Public Zero SendCommand (string Command, parameter string [strfilename] {}

Then you can call it like this: 

  SendCommand ("cmd"); Send Command ("CMD", "A"); Send Command ("CMD", "B");

Or if you use C # 4.0, you can use the new optional logic feature You can use: 

  Public Zero SendCommand (string command, string s Trfilename = null) {if (strfelname! = Null) ..}

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