Question

I often come across situations when I need to use the same variable but converted to a different type.

for example:

string port;
...
ValidatePort(int port);

Here in ValidatePort I need to use the same variable port but its type should be integer. In order to do that I need first to convert original port to int and use a temporary variable like iPort or something similar to pass it then to ValidatePort

This is not the only case of naming collision and in every other situation I used different approaches (if I needed a string I called it variableName + String or some other endings)

Is there a naming convention in C# for that or a common approach for naming variables that are similar but of different types?

Answer 1

I would say it is wise to make it obvious what a variable is by looking at it.

var time;

you have no idea what that represents. It could be any of these:

int time; // number of seconds
DateTime time;
TimeSpan time;

I would say

int port = 7;
string portAsString = port.toString();

but for your code above, there is no problem with just calling it port as this code is perfectly valid:

string port = "7";

int portAsInteger = int.parse(port); // If you need a temporary variable

myMethod(int.parse(port)); // You can use variable 'port' twice as scope is different
myMethod(portAsInteger);

public void myMethod(int port) { .... }