C＃Convert.ToInt32(object)方法 (C# Convert.ToInt32(object) Method)

Convert.ToInt32(object) Method is used to convert a specific object’s value to its equivalent 32-bits signed integer (int32).

Convert.ToInt32(object)方法用于将特定对象的值转换为其等效的32位带符号整数(int32)。

Note: Value of the object to be converted should not exceed the range of a signed 32-bit integer i.e. the converted value through the function should match the range of a signed integer of 32-bit.

注意：要转换的对象的值不应超过有符号的32位整数的范围，即，通过函数转换的值应与32位的有符号整数的范围匹配。

Syntax:

句法：

    int Convert.ToInt32(object value);

It accepts an object value/variable as an argument and returns its equivalent signed integer.

它接受一个对象值/变量作为参数，并返回其等效的带符号整数。

Example:

例：

    Input:
object a = 'A';
Output:
65
Input:
object a = 10.23m;
Output:
10

Code:

码：

using System;
using System.Text;
namespace Test
{class Program
{static void Main(string[] args)
{object a = 'A'; //char object
object b = 10.23f; //single/float objet
object c = 10.23m; //decimal object
Console.WriteLine("value of a: {0}, type of a: {1}", a, a.GetType());
Console.WriteLine("value of b: {0}, type of b: {1}", b, b.GetType());
Console.WriteLine("value of c: {0}, type of c: {1}", c, c.GetType());
//converting to Int32 & printing values & types
Console.WriteLine("value: {0}, type: {1}", Convert.ToInt32(a), Convert.ToInt32(a).GetType());
Console.WriteLine("value: {0}, type: {1}", Convert.ToInt32(b), Convert.ToInt32(b).GetType());
Console.WriteLine("value: {0}, type: {1}", Convert.ToInt32(c), Convert.ToInt32(c).GetType());
//hit ENTER to exit
Console.ReadLine();
}
}
}

Output

输出量

value of a: A, type of a: System.Char
value of b: 10.23, type of b: System.Single
value of c: 10.23, type of c: System.Decimal
value: 65, type: System.Int32
value: 10, type: System.Int32
value: 10, type: System.Int32

翻译自: https://www.includehelp.com/dot-net/Convert-ToInt32-object-method-in-c-sharp.aspx