Console app arguments, how arguments are passed to Main method
The Main method is the Entry point of your application. If you checkout via ildasm then
.method private hidebysig static void Main(string[] args) cil managed
{
.entrypoint
This is what helps in calling the method
The arguments are passed as say C:\AppName arg1 arg2 arg3
How is main called?
When you are using the console application template the code will be compiled requiring a method called Main in the startup object as Main is market as entry point to the application.
By default no startup object is specified in the project propery settings and the Program class will be used by default. You can change this in the project property under the "Build" tab if you wish.
Keep in mind that which ever object you assign to be the startup object must have a method named Main in it.
How are args passed to main method
The accepted format is MyConsoleApp.exe value01 value02 etc...
The application assigns each value after each space into a separate element of the parameter array.
Thus, MyConsoleApp.exe value01 value02 will mean your args paramter has 2 elements:
[0] = "value01"
[1] = "value02"
How you parse the input values and use them is up to you.
Hope this helped.
Additional Reading:
Creating Console Applications (Visual C#)
Command-Line Arguments (C# Programming Guide)
The runtime splits the arguments given at the console at each space.
If you call
myApp.exe arg1 arg2 arg3
The Main Method gets an array of
var args = new string[] {"arg1","arg2","arg3"}
All answers are awesome and explained everything very well
but I just want to point out different way for passing args to main method
in visual studio
- right click on Project then choose Properties
- go to Debug tab then on the Start Options section provide the app with your args
like this image
and happy knowing secrets