How can I convert String to Int?

Question

I have a TextBoxD1.Text and I want to convert it to an int to store it in a database.

How can I do this?

Answer 1

You also may use an extension method, so it will be more readable (although everybody is already used to the regular Parse functions).

public static class StringExtensions
{
    /// 

    /// Converts a string to int.
    /// 
    /// The string to convert.
    /// The converted integer.
    public static int ParseToInt32(this string value)
    {
        return int.Parse(value);
    }

    /// 

    /// Checks whether the value is integer.
    /// 
    /// The string to check.
    /// The out int parameter.
    /// true if the value is an integer; otherwise, false.
    public static bool TryParseToInt32(this string value, out int result)
    {
        return int.TryParse(value, out result);
    }
}

And then you can call it that way:

1. If you are sure that your string is an integer, like "50".

   int num = TextBoxD1.Text.ParseToInt32();
   

2. If you are not sure and want to prevent crashes.

   int num;
   if (TextBoxD1.Text.TryParseToInt32(out num))
   {
       //The parse was successful, the num has the parsed value.
   }
   

To make it more dynamic, so you can parse it also to double, float, etc., you can make a generic extension.