I need help converting a string to a bool value:

I've been trying to get the value (true or false) from the TopMost for my program and save it in my settings.

Settings1.Default["tm"] = ;
Settings1.Default.Save();

The type for my setting 'tm' is a bool value (true, false) but I've only been using C# for a short amount of time and I'm not sure how to save whether or not my TopMost will be true or false.

Before you say to use the one in properties it's a user option; I want them to be able to choose the option of whether it's on(true) or off(false) but have it save and load as a bool value.

2

3 Answers

I know this is not an ideal question to answer but as the OP seems to be a beginner, I'd love to share some basic knowledge with him... Hope everybody understands

OP, you can convert a string to type Boolean by using any of the methods stated below:

 string sample = "True"; bool myBool = bool.Parse(sample); // Or bool myBool = Convert.ToBoolean(sample);

bool.Parse expects one parameter which in this case is sample, .ToBoolean also expects one parameter.

You can use TryParse which is the same as Parse but it doesn't throw any exception :)

string sample = "false";
Boolean myBool;
if (Boolean.TryParse(sample , out myBool))
{ // Do Something
}

Please note that you cannot convert any type of string to type Boolean because the value of a Boolean can only be True or False

Hope you understand :)

1

You must use some of the C # conversion systems:

string to boolean: True to true

string str = "True";
bool mybool = System.Convert.ToBoolean(str);

boolean to string: true to True

bool mybool = true;
string str = System.Convert.ToString(mybool);
//or
string str = mybool.ToString();

bool.Parse expects one parameter which in this case is str, even .

Convert.ToBoolean expects one parameter.

bool.TryParse expects two parameters, one entry (str) and one out (result).

If TryParse is true, then the conversion was correct, otherwise an error occurred

string str = "True";
bool MyBool = bool.Parse(str);
//Or
string str = "True";
if(bool.TryParse(str, out bool result))
{ //Correct conversion
}
else
{ //Incorrect, an error has occurred
}

5

If you just don't care about what to do when it fails, use this extension:

 public static bool GetBool(this string input) { var boolResult = false; bool.TryParse(input, out boolResult); return boolResult; }

If it isn't True, true, it is false. No exceptions.

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