本文整理汇总了C#中System.Convert.ToDecimal方法的典型用法代码示例。如果您正苦于以下问题：C# Convert.ToDecimal方法的具体用法？C# Convert.ToDecimal怎么用？C# Convert.ToDecimal使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Convert的用法示例。
在下文中一共展示了Convert.ToDecimal方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Globalization;
public class Example
{
public static void Main()
{
string[] values = { "123456789", "12345.6789", "12 345,6789",
"123,456.789", "123 456,789", "123,456,789.0123",
"123 456 789,0123" };
CultureInfo[] cultures = { new CultureInfo("en-US"),
new CultureInfo("fr-FR") };
foreach (CultureInfo culture in cultures)
{
Console.WriteLine("String -> Decimal Conversion Using the {0} Culture",
culture.Name);
foreach (string value in values)
{
Console.Write("{0,20} -> ", value);
try {
Console.WriteLine(Convert.ToDecimal(value, culture));
}
catch (FormatException) {
Console.WriteLine("FormatException");
}
}
Console.WriteLine();
}
}
}输出：
String -> Decimal Conversion Using the en-US Culture 123456789 -> 123456789 12345.6789 -> 12345.6789 12 345,6789 -> FormatException 123,456.789 -> 123456.789 123 456,789 -> FormatException 123,456,789.0123 -> 123456789.0123 123 456 789,0123 -> FormatException String -> Decimal Conversion Using the fr-FR Culture 123456789 -> 123456789 12345.6789 -> FormatException 12 345,6789 -> 12345.6789 123,456.789 -> FormatException 123 456,789 -> 123456.789 123,456,789.0123 -> FormatException 123 456 789,0123 -> 123456789.0123
示例2: Temperature
//引入命名空间
using System;
using System.Globalization;
public class Temperature : IConvertible
{
private decimal m_Temp;
public Temperature(decimal temperature)
{
this.m_Temp = temperature;
}
public decimal Celsius
{
get { return this.m_Temp; }
}
public decimal Kelvin
{
get { return this.m_Temp + 273.15m; }
}
public decimal Fahrenheit
{
get { return Math.Round((decimal) (this.m_Temp * 9 / 5 + 32), 2); }
}
public override string ToString()
{
return m_Temp.ToString("N2") + " °C";
}
// IConvertible implementations.
public TypeCode GetTypeCode()
{
return TypeCode.Object;
}
public bool ToBoolean(IFormatProvider provider)
{
if (m_Temp == 0)
return false;
else
return true;
}
public byte ToByte(IFormatProvider provider)
{
if (m_Temp < Byte.MinValue || m_Temp > Byte.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the Byte type.",
this.m_Temp));
else
return Decimal.ToByte(this.m_Temp);
}
public char ToChar(IFormatProvider provider)
{
throw new InvalidCastException("Temperature to Char conversion is not supported.");
}
public DateTime ToDateTime(IFormatProvider provider)
{
throw new InvalidCastException("Temperature to DateTime conversion is not supported.");
}
public decimal ToDecimal(IFormatProvider provider)
{
return this.m_Temp;
}
public double ToDouble(IFormatProvider provider)
{
return Decimal.ToDouble(this.m_Temp);
}
public short ToInt16(IFormatProvider provider)
{
if (this.m_Temp < Int16.MinValue || this.m_Temp > Int16.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the Int16 type.",
this.m_Temp));
else
return Decimal.ToInt16(this.m_Temp);
}
public int ToInt32(IFormatProvider provider)
{
if (this.m_Temp < Int32.MinValue || this.m_Temp > Int32.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the Int32 type.",
this.m_Temp));
else
return Decimal.ToInt32(this.m_Temp);
}
public long ToInt64(IFormatProvider provider)
{
if (this.m_Temp < Int64.MinValue || this.m_Temp > Int64.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the Int64 type.",
this.m_Temp));
else
return Decimal.ToInt64(this.m_Temp);
}
public sbyte ToSByte(IFormatProvider provider)
{
if (this.m_Temp < SByte.MinValue || this.m_Temp > SByte.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the SByte type.",
this.m_Temp));
else
return Decimal.ToSByte(this.m_Temp);
}
public float ToSingle(IFormatProvider provider)
{
return Decimal.ToSingle(this.m_Temp);
}
public string ToString(IFormatProvider provider)
{
return m_Temp.ToString("N2", provider) + " °C";
}
public object ToType(Type conversionType, IFormatProvider provider)
{
switch (Type.GetTypeCode(conversionType))
{
case TypeCode.Boolean:
return this.ToBoolean(null);
case TypeCode.Byte:
return this.ToByte(null);
case TypeCode.Char:
return this.ToChar(null);
case TypeCode.DateTime:
return this.ToDateTime(null);
case TypeCode.Decimal:
return this.ToDecimal(null);
case TypeCode.Double:
return this.ToDouble(null);
case TypeCode.Int16:
return this.ToInt16(null);
case TypeCode.Int32:
return this.ToInt32(null);
case TypeCode.Int64:
return this.ToInt64(null);
case TypeCode.Object:
if (typeof(Temperature).Equals(conversionType))
return this;
else
throw new InvalidCastException(String.Format("Conversion to a {0} is not supported.",
conversionType.Name));
case TypeCode.SByte:
return this.ToSByte(null);
case TypeCode.Single:
return this.ToSingle(null);
case TypeCode.String:
return this.ToString(provider);
case TypeCode.UInt16:
return this.ToUInt16(null);
case TypeCode.UInt32:
return this.ToUInt32(null);
case TypeCode.UInt64:
return this.ToUInt64(null);
default:
throw new InvalidCastException(String.Format("Conversion to {0} is not supported.", conversionType.Name));
}
}
public ushort ToUInt16(IFormatProvider provider)
{
if (this.m_Temp < UInt16.MinValue || this.m_Temp > UInt16.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the UInt16 type.",
this.m_Temp));
else
return Decimal.ToUInt16(this.m_Temp);
}
public uint ToUInt32(IFormatProvider provider)
{
if (this.m_Temp < UInt32.MinValue || this.m_Temp > UInt32.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the UInt32 type.",
this.m_Temp));
else
return Decimal.ToUInt32(this.m_Temp);
}
public ulong ToUInt64(IFormatProvider provider)
{
if (this.m_Temp < UInt64.MinValue || this.m_Temp > UInt64.MaxValue)
throw new OverflowException(String.Format("{0} is out of range of the UInt64 type.",
this.m_Temp));
else
return Decimal.ToUInt64(this.m_Temp);
}
}示例3: Main
public class Example
{
public static void Main()
{
Temperature cold = new Temperature(-40);
Temperature freezing = new Temperature(0);
Temperature boiling = new Temperature(100);
Console.WriteLine(Convert.ToDecimal(cold, null));
Console.WriteLine(Convert.ToDecimal(freezing, null));
Console.WriteLine(Convert.ToDecimal(boiling, null));
}
}输出：
-40 0 100
示例4: foreach
ulong[] numbers = { UInt64.MinValue, 121, 12345, UInt64.MaxValue };
decimal result;
foreach (ulong number in numbers)
{
result = Convert.ToDecimal(number);
Console.WriteLine("Converted the UInt64 value {0} to {1}.",
number, result);
}输出：
Converted the UInt64 value 0 to 0. Converted the UInt64 value 121 to 121. Converted the UInt64 value 12345 to 12345. Converted the UInt64 value 18446744073709551615 to 18446744073709551615.
示例5: foreach
uint[] numbers = { UInt32.MinValue, 121, 12345, UInt32.MaxValue };
decimal result;
foreach (uint number in numbers)
{
result = Convert.ToDecimal(number);
Console.WriteLine("Converted the UInt32 value {0} to {1}.",
number, result);
}输出：
Converted the UInt32 value 0 to 0. Converted the UInt32 value 121 to 121. Converted the UInt32 value 12345 to 12345. Converted the UInt32 value 4294967295 to 4294967295.
示例6: foreach
ushort[] numbers = { UInt16.MinValue, 121, 12345, UInt16.MaxValue };
decimal result;
foreach (ushort number in numbers)
{
result = Convert.ToDecimal(number);
Console.WriteLine("Converted the UInt16 value {0} to {1}.",
number, result);
}输出：
Converted the UInt16 value 0 to 0. Converted the UInt16 value 121 to 121. Converted the UInt16 value 12345 to 12345. Converted the UInt16 value 65535 to 65535.
示例7: ConvertStringDecimal
public void ConvertStringDecimal(string stringVal) {
decimal decimalVal = 0;
try {
decimalVal = System.Convert.ToDecimal(stringVal);
System.Console.WriteLine(
"The string as a decimal is {0}.", decimalVal);
}
catch (System.OverflowException){
System.Console.WriteLine(
"The conversion from string to decimal overflowed.");
}
catch (System.FormatException) {
System.Console.WriteLine(
"The string is not formatted as a decimal.");
}
catch (System.ArgumentNullException) {
System.Console.WriteLine(
"The string is null.");
}
// Decimal to string conversion will not overflow.
stringVal = System.Convert.ToString(decimalVal);
System.Console.WriteLine(
"The decimal as a string is {0}.", stringVal);
}示例8: foreach
sbyte[] numbers = { SByte.MinValue, -23, 0, 17, SByte.MaxValue };
decimal result;
foreach (sbyte number in numbers)
{
result = Convert.ToDecimal(number);
Console.WriteLine("Converted the SByte value {0} to {1}.", number, result);
}
// Converted the SByte value -128 to -128.
// Converted the SByte value -23 to -23.
// Converted the SByte value 0 to 0.
// Converted the SByte value 17 to 17.
// Converted the SByte value 127 to 127.示例9: foreach
object[] values = { true, 'a', 123, 1.764e32, "9.78", "1e-02",
1.67e03, "A100", "1,033.67", DateTime.Now,
Double.MaxValue };
decimal result;
foreach (object value in values)
{
try {
result = Convert.ToDecimal(value);
Console.WriteLine("Converted the {0} value {1} to {2}.",
value.GetType().Name, value, result);
}
catch (OverflowException) {
Console.WriteLine("The {0} value {1} is out of range of the Decimal type.",
value.GetType().Name, value);
}
catch (FormatException) {
Console.WriteLine("The {0} value {1} is not recognized as a valid Decimal value.",
value.GetType().Name, value);
}
catch (InvalidCastException) {
Console.WriteLine("Conversion of the {0} value {1} to a Decimal is not supported.",
value.GetType().Name, value);
}
}输出：
Converted the Boolean value True to 1. Conversion of the Char value a to a Decimal is not supported. Converted the Int32 value 123 to 123. The Double value 1.764E+32 is out of range of the Decimal type. Converted the String value 9.78 to 9.78. The String value 1e-02 is not recognized as a valid Decimal value. Converted the Double value 1670 to 1670. The String value A100 is not recognized as a valid Decimal value. Converted the String value 1,033.67 to 1033.67. Conversion of the DateTime value 10/15/2008 05:40:42 PM to a Decimal is not supported. The Double value 1.79769313486232E+308 is out of range of the Decimal type.
示例10: foreach
float[] numbers = { Single.MinValue, -3e10f, -1093.54f, 0f, 1e-03f,
1034.23f, Single.MaxValue };
decimal result;
foreach (float number in numbers)
{
try {
result = Convert.ToDecimal(number);
Console.WriteLine("Converted the Single value {0} to {1}.", number, result);
}
catch (OverflowException) {
Console.WriteLine("{0} is out of range of the Decimal type.", number);
}
}输出：
-3.402823E+38 is out of range of the Decimal type. Converted the Single value -3E+10 to -30000000000. Converted the Single value -1093.54 to -1093.54. Converted the Single value 0 to 0. Converted the Single value 0.001 to 0.001. Converted the Single value 1034.23 to 1034.23. 3.402823E+38 is out of range of the Decimal type.
示例11:
Console.WriteLine(Convert.ToDecimal(1234567500.12F)); // Displays 1234568000
Console.WriteLine(Convert.ToDecimal(1234568500.12F)); // Displays 1234568000
Console.WriteLine(Convert.ToDecimal(10.980365F)); // Displays 10.98036
Console.WriteLine(Convert.ToDecimal(10.980355F)); // Displays 10.98036示例12: foreach
int[] numbers = { Int32.MinValue, -1000, 0, 1000, Int32.MaxValue };
decimal result;
foreach (int number in numbers)
{
result = Convert.ToDecimal(number);
Console.WriteLine("Converted the Int32 value {0} to the Decimal value {1}.",
number, result);
}输出：
Converted the Int32 value -2147483648 to the Decimal value -2147483648. Converted the Int32 value -1000 to the Decimal value -1000. Converted the Int32 value 0 to the Decimal value 0. Converted the Int32 value 1000 to the Decimal value 1000. Converted the Int32 value 2147483647 to the Decimal value 2147483647.
示例13: foreach
bool[] flags = { true, false };
decimal result;
foreach (bool flag in flags)
{
result = Convert.ToDecimal(flag);
Console.WriteLine("Converted {0} to {1}.", flag, result);
}输出：
Converted True to 1. Converted False to 0.
示例14: ConvertByteDecimal
public void ConvertByteDecimal(byte byteVal) {
decimal decimalVal;
// Byte to decimal conversion will not overflow.
decimalVal = System.Convert.ToDecimal(byteVal);
System.Console.WriteLine("The byte as a decimal is {0}.",
decimalVal);
// Decimal to byte conversion can overflow.
try {
byteVal = System.Convert.ToByte(decimalVal);
System.Console.WriteLine("The Decimal as a byte is {0}.",
byteVal);
}
catch (System.OverflowException) {
System.Console.WriteLine(
"The decimal value is too large for a byte.");
}
}示例15: ConvertCharDecimal
public void ConvertCharDecimal(char charVal) {
Decimal decimalVal = 0;
// Char to decimal conversion is not supported and will always
// throw an InvalidCastException.
try {
decimalVal = System.Convert.ToDecimal(charVal);
}
catch (System.InvalidCastException) {
System.Console.WriteLine(
"Char-to-Decimal conversion is not supported " +
"by the .NET Framework.");
}
//Decimal to char conversion is also not supported.
try {
charVal = System.Convert.ToChar(decimalVal);
}
catch (System.InvalidCastException) {
System.Console.WriteLine(
"Decimal-to-Char conversion is not supported " +
"by the .NET Framework.");
}
}