代碼如下:

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Text.RegularExpressions; 
namespace TypeClass 
{ 
public class TypeParse 
{ 
/// <summary> 
/// 判斷對象是否為Int32類型的數字 
/// </summary> 
/// <param name="Expression"></param> 
/// <returns></returns> 
public static bool IsNumeric(object Expression) 
{ 
if (Expression != null) 
{ 
int intVal; 
return int.TryParse(Expression.ToString(), out intVal); 
} 
return false; 
} 
public static bool IsDouble(object Expression) 
{ 
if (Expression != null) 
{ 
double doubleVal; 
return double.TryParse(Expression.ToString(), out doubleVal); 
} 
return false; 
} 
/// <summary> 
/// string型轉換為bool型 
/// </summary> 
/// <param name="strValue">要轉換的字符串</param> 
/// <param name="defValue">缺省值</param> 
/// <returns>轉換后的bool類型結果</returns> 
public static bool StrToBool(object Expression, bool defValue) 
{ 
if (Expression != null) 
{ 
bool boolValue; 
if (bool.TryParse(Expression.ToString(), out boolValue)) 
return boolValue; 
else 
return defValue; 
} 
return defValue; 
} 
/// <summary> 
/// 將對象轉換為Int32類型 
/// </summary> 
/// <param name="strValue">要轉換的字符串</param> 
/// <param name="defValue">缺省值</param> 
/// <returns>轉換后的Int32類型結果</returns> 
public static int StrToInt(object Expression, int defValue) 
{ 
if (Expression != null) 
{ 
int intValue; 
if (int.TryParse(Expression.ToString(), out intValue)) 
return intValue; 
else 
return defValue; 
} 
return defValue; 
} 
/// <summary> 
/// string型轉換為float型 
/// </summary> 
/// <param name="strValue">要轉換的字符串</param> 
/// <param name="defValue">缺省值</param> 
/// <returns>轉換后的float類型結果</returns> 
public static float StrToFloat(object strValue, float defValue) 
{ 
if (strValue != null) 
{ 
float floatValue; 
if (float.TryParse(strValue.ToString(), out floatValue)) 
return floatValue; 
else 
return defValue; 
} 
return defValue; 
} 
/// <summary> 
/// string型轉換為Decimal型 
/// </summary> 
/// <param name="strValue">要轉換的字符串</param> 
/// <param name="defValue">缺省值</param> 
/// <returns>轉換后的Decimal類型結果</returns> 
public static Decimal StrToDecimal(object strValue, Decimal defValue) 
{ 
if (strValue != null) 
{ 
Decimal decimalValue; 
if (Decimal.TryParse(strValue.ToString(), out decimalValue)) 
return Math.Round(decimalValue,2); 
else 
return defValue; 
} 
return defValue; 
} 
/// <summary> 
/// string型轉換為datetime型 
/// </summary> 
/// <param name="strValue">要轉換的字符串</param> 
/// <param name="defValue">缺省值</param> 
/// <returns>轉換后的datetime類型結果</returns> 
public static DateTime StrToDateTime(object strValue, DateTime defValue) 
{ 
if (strValue != null) 
{ 
DateTime DateTimeValue; 
if (DateTime.TryParse(strValue.ToString(), out DateTimeValue)) 
return DateTimeValue; 
else 
return defValue; 
} 
return defValue; 
} 
/// <summary> 
/// 判斷給定的字符串數組(strNumber)中的數據是不是都為數值型 
/// </summary> 
/// <param name="strNumber">要確認的字符串數組</param> 
/// <returns>是則返加true 不是則返回 false</returns> 
public static bool IsNumericArray(string[] strNumber) 
{ 
if (strNumber == null) 
{ 
return false; 
} 
if (strNumber.Length < 1) 
{ 
return false; 
} 
foreach (string id in strNumber) 
{ 
if (!IsNumeric(id)) 
{ 
return false; 
} 
} 
return true; 
} 
} 
}