Int.Parse() vs. Convert.ToInt32(): Which C# Method Should You Choose for String-to-Integer Conversion?

The conversion of the string to the integer in the c#:

Different analysis of Int.Parse() Convert.ToInt32()

When processing numerical data in C#, the strings often need to be converted to an integer.

and are two commonly used methods, but there are key differences between them. Which method to choose depends on the specific scene. Int.Parse() Convert.ToInt32()

Method

Int.Parse() is the method of data type, which is used to convert the numbers representing the string to an integer. It requires the strings to be an effective integer format, otherwise

abnormalities will be thrown out.

Int.Parse() For example: int ArgumentException

Method

int number = int.Parse("123"); // 将字符串 "123" 转换为整数 123

is the static method of the

class, which is also used to convert the string to an integer. However, unlike , it accepts an object as a parameter, which can be a variety of types, including string. If the strings are not an effective integer format, will not throw an exception, but return 0. Convert.ToInt32() For example:

How to choose? Convert.ToInt32() The choice of Convert and Int.Parse() depends on the specific situation and the preferences of the developer: Convert.ToInt32()

If the expected string is an effective integer,

int number = Convert.ToInt32("123"); // 将字符串 "123" 转换为整数 123
int nullNumber = Convert.ToInt32(null); // 返回 0，因为 null 不是有效的整数格式

is a better choice because it provides better error treatment and performance.

If the processing user input may not always be effective,

is a safer choice, because it returns the default value instead of throwing an exception.

Int.Parse() If you need to change the Convert.ToInt32() type or the object with a user -defined format as an integer,

is the only choice, because
• can only convert the string. Int.Parse() In short, according to the reliability and flexibility needs of input data, the most suitable conversion method is important.

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