C#将字符串转换为整型

int numVal = Convert.ToInt32("29");
numVal++;

Console.WriteLine(numVal);
// Output: 30
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int numVal = Int32.Parse("-105");
Console.WriteLine(numVal);
// Output: -105

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int j;
Int32.TryParse("-105", out j);
Console.WriteLine(j);
// Output: -105

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

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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.