Mega Code Archive
0287 Summary of numeric conversions
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Parsing base 10 numbers
Use the Parse and TryParse methods.
using System;
using System.Text;
using System.Globalization;
class Sample
{
public static void Main()
{
double d = double.Parse("3.5");
int i;
bool ok = int.TryParse("3", out i);
}
}
Parsing from base 2, 8, or 16 with Convert.ToIntegral
using System;
using System.Text;
using System.Globalization;
class Sample
{
public static void Main()
{
int i = Convert.ToInt32("1E", 16);
Console.WriteLine(i);
}
}
The output:
30
Formatting to hexadecimal: ToString ("X")
using System;
using System.Text;
using System.Globalization;
class Sample
{
public static void Main()
{
string hex = 45.ToString("X");
Console.WriteLine(hex);
}
}
The output:
2D
Lossless numeric conversion: Implicit cast
using System;
using System.Text;
using System.Globalization;
class Sample
{
public static void Main()
{
int i = 23;
double d = i;
}
}
Truncating numeric conversion: Explicit cast
using System;
using System.Text;
using System.Globalization;
class Sample
{
public static void Main()
{
double d = 23.5;
int i = (int)d;
}
}
Rounding numeric conversion with Convert.ToIntXXX
using System;
using System.Text;
using System.Globalization;
class Sample
{
public static void Main()
{
double d = 23.5;
int i = Convert.ToInt32(d);
Console.WriteLine(i);
}
}
The output:
24
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