CODEWITHSUNDEEP
c#asp.net
Matt The Ninja
Matt The Ninja

Reputation: 2731

Create variable just a number from text/number string - Razor CSHTML

I have a variable var1. In the current context, it is pulled from the database and will be one of those values:

2, 6, 7 6t, 7q, 8q,

The number will only ever be single digit.

The number will only ever be the first characters in the variable.

I would like to create a single character variable (the number) from the variable I have put in.

Here for instance my variable Fac1Raw has the value of 3c and I have tried to use this code:

var Fac1 = (int)(Fac1Raw.ToString().Substring(0, 1));

However I can't get it to work. Any ideas?

Upvotes: 1

Views: 1939

Answers (1)

Shadow Wizard
Shadow Wizard

Reputation: 66389

You can't convert String to integer type directly. For this, you have the Parse methods. If you know for sure the string won't be empty and first character is a digit, you can parse without catching errors:

var Fac1 = Int32.Parse(Fac1Raw.ToString().Substring(0, 1));

If you do want some validations to prevent your code from crashing:

string rawFac1 = Fac1Raw.ToString();
if (rawFac1.Length == 0 || !char.IsDigit(rawFac1[0]))
{
    //handle invalid value
}
else
{
    var Fac1 = Int32.Parse(rawFac1[0].ToString());
    //...rest of code
}

Upvotes: 1

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