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C#/.NET - convert string to int

11 points
Created by:
Marcin
2544

In C#/.NET string can be parsed to int in few ways.

1. int.Parse example

string text = "123";
int value = int.Parse(text);
Console.WriteLine(value);

Output:

123

2. int.TryParse example

string text = "123";
int value;

if (int.TryParse(text, out value))
	Console.WriteLine(value);

Output:

123

3. Convert.ToInt32 example

string text = "123";
int value = Convert.ToInt32(text);
Console.WriteLine(value);

Output:

123

4. TypeConverter.ConvertFrom example

TypeConverter converter = TypeDescriptor.GetConverter(typeof(int));

string text = "123";
int value = (int)converter.ConvertFrom(text);

Console.WriteLine(value);

Output:

123

5. Custom conversion example

Check this link: https://dirask.com/q/QD9EaD

6. Notes

The following methods int.Parse, Convert.ToInt32 and TypeConverter.ConvertFrom throw System.FormatException.

C# - string conversion

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