C# | Convert。ToUInt16(字符串，表单提供者)方法

原文:https://www . geesforgeks . org/c-sharp-convert-touint 16 string-iformatprovider-method/

此方法用于使用指定的区域性特定格式信息，将数字的指定字符串表示形式转换为等效的 16 位无符号整数。

语法:

public static ushort ToUInt16(字符串值，IFormatProvider 提供程序)；

参数:

  • 值:是包含要转换的数字的字符串。
  • 提供程序:它是一个提供区域性特定格式信息的对象。

返回值:该方法返回一个 16 位无符号整数，等于数值中的数字，如果值为空，则返回 0(零)。 例外:

  • 格式异常:如果值不是由可选符号后跟一系列数字(0 到 9)组成。
  • OverflowException: 如果该值代表小于最小值或大于最大值的数字。

以下程序说明了转换的使用。方法: T3】例 1:

c sharp . c sharp . c sharp . c sharp

// C# program to demonstrate the
// Convert.ToUInt16() Method
using System;
using System.Globalization;

class GFG {

// Main Method
public static void Main()
{
    try {

        // creating object of CultureInfo
        CultureInfo cultures = new CultureInfo("en-US");

        // declaring and initializing String array
        string[] values = {"12345", "+3456",
                                    "3456"};

        // calling get() Method
        Console.Write("Converted ushort value"
              + " from a specified string ");

        for (int j = 0; j < values.Length; j++)
        {
            get(values[j], cultures);
        }
    }

    catch (FormatException e)
    {
        Console.WriteLine("\n");
        Console.Write("Exception Thrown: ");
        Console.Write("{0}", e.GetType(), e.Message);
    }

    catch (OverflowException e)
    {
        Console.WriteLine("\n");
        Console.Write("Exception Thrown: ");
        Console.Write("{0}", e.GetType(), e.Message);
    }
}

// Defining get() method
public static void get(string s,
           CultureInfo cultures)
{

    // converting string to specified ushort
    ushort val = Convert.ToUInt16(s, cultures);

    // display the converted ushort value
    Console.Write(" {0}, ", val);
}
}

Output

Converted ushort value from a specified string  12345,  3456,  3456,

例 2: 为格式异常

c sharp . c sharp . c sharp . c sharp

// C# program to demonstrate the
// Convert.ToUInt16() Method
using System;
using System.Globalization;

class GFG {

// Main Method
public static void Main()
{
    try {

        // creating object of CultureInfo
        CultureInfo cultures = new CultureInfo("en-US");

        // declaring and initializing
        // String array
        string[] values = {"12345", "+3456",
                                    "3456"};

        // calling get() Method
        Console.Write("Converted ushort value"
                 + " of specified strings: ");

        for (int j = 0; j < values.Length; j++)
        {
            get(values[j], cultures);
        }

        Console.WriteLine("\n");
        string s = "123 456, 789";

        Console.WriteLine("format of s is invalid ");

        // converting string to specified ushort
        ushort val = Convert.ToUInt16(s, cultures);

        // display the converted ushort value
        Console.Write(" {0}, ", val);
    }

    catch (FormatException e)
    {
        Console.Write("Exception Thrown: ");
        Console.Write("{0}", e.GetType(), e.Message);
    }

    catch (OverflowException e)
    {
        Console.Write("Exception Thrown: ");
        Console.Write("{0}", e.GetType(), e.Message);
    }
}

// Defining get() method
public static void get(string s,
           CultureInfo cultures)
{

    // converting string to
    // specified ushort value
    ushort val = Convert.ToUInt16(s, cultures);

    // display the converted
    // ushort value
    Console.Write(" {0}, ", val);
}
}

Output: 

Converted ushort value of specified strings:  12345,  3456,  3456, 

format of s is invalid 
Exception Thrown: System.FormatException

例 3: 适用于飞越异常

c sharp . c sharp . c sharp . c sharp

// C# program to demonstrate the
// Convert.ToUInt16 Method
using System;
using System.Globalization;

class GFG {

// Main Method
public static void Main()
{

    try {

        // creating object of CultureInfo
        CultureInfo cultures = new CultureInfo("en-US");

        // declaring and initializing String array
        string[] values = {"12345", "+3456",
                                    "3456"};

        // calling get() Method
        Console.Write("Converted ushort value "
                    + "of specified strings: ");

        for (int j = 0; j < values.Length; j++)
        {
            get(values[j], cultures);
        }

        Console.WriteLine("\n");
        string s = "-7922816251426433759354395033500000";

        Console.WriteLine("s is less than the MinValue");

        // converting string to specified ushort
        ushort val = Convert.ToUInt16(s, cultures);

        // display the converted ushort value
        Console.WriteLine(" {0}, ", val);
    }

    catch (FormatException e)
    {
        Console.Write("Exception Thrown: ");
        Console.Write("{0}", e.GetType(), e.Message);
    }

    catch (OverflowException e)
    {
        Console.Write("Exception Thrown: ");
        Console.Write("{0}", e.GetType(), e.Message);
    }
}

// Defining get() method
public static void get(string s,
           CultureInfo cultures)
{

    // converting string to
    // specified ushort value
    ushort val = Convert.ToUInt16(s, cultures);

    // display the converted ushort value
    Console.Write(" {0}, ", val);
}
}

Output: 

Converted ushort value of specified strings:  12345,  3456,  3456, 

s is less than the MinValue
Exception Thrown: System.OverflowException

参考:

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