how to convert from string to integer in c# ?

Very interesting thing in conversion is Input string, here some examples to understand convertion..

1.

int numVal = Int32.Parse("-105");
Console.WriteLine(numVal);
// Output: -105

2.

int j;
bool result = Int32.TryParse("-105", out j);
if (true == result)
    Console.WriteLine(j);
else
    Console.WriteLine("String could not be parsed.");
// Output: -105

3.

try
{
    int m = Int32.Parse("abc");
}
catch (FormatException e)
{
    Console.WriteLine(e.Message);
}
// Output: Input string was not in a correct format.

4.

string inputString = "abc";
int numValue;
bool parsed = Int32.TryParse(inputString, out numValue);

if (!parsed)
    Console.WriteLine("Int32.TryParse could not parse '{0}' to an int.\n", inputString);
// Output: Int32.TryParse could not parse 'abc' to an int.

From above example you come to know that input string should be in correct format..

You can refer below link..
http://msdn.microsoft.com/en-us/library/bb397679.aspx[^]