Question

If I declared a bool isTrue = false; // init it to false

and I can get the value from a string strVal = T; // I assumed it is the TRUE value

I heard it is not a good code style to compare string in C# like

if (isTrue.tostring() == strVal) {}.

Some time, I covert the the string variable to enum then I can compare it more convenient.

Is there any good method to do it?

Answer 1

Yes, you parse the string into a boolean first.

Try this:

bool someBool = false; 

string boolVal = "true";
bool stringBool;
bool.TryParse(boolVal, out stringBool);

if (someBool == boolVal) 
{

}

Alternatively to handle ‘T’ and ‘F’ try these methods:

public bool ParseString(string maybeBool)
{
    return ParseString(maybeBool, false);
}

public bool ParseString(string maybeBool, bool def)
{
    bool stringBool;
    if (bool.TryParse(maybeBool, out stringBool))
        return stringBool;

    if (string.Equals(maybeBool, "T", StringComparison.OrdinalIgnoreCase))
        return true;

    if (string.Equals(maybeBool, "F", StringComparison.OrdinalIgnoreCase))
        return false;

    return def;
}