常用的工具类2

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public sealed class TypeHelper
{
#region Int16 / short
public static short ToInt16(object o, short _default)
{
try { return Convert.ToInt16(o); }
catch { }
short result = default(short);
if (!short.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static short ToInt16(object o)
{
return ToInt16(o, default(short));
}
#endregion

public static string ToStringNoPoint(string str)
{
//return str.TrimEnd(new char[] { ‘0‘, ‘.‘ });
return str.Replace(".00","").Replace(".0","");
}

#region Int32 / int
/// <summary>
/// 转换为int类型
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static int ToInt(object o, int _default)
{
try { return Convert.ToInt32(o); }
catch { }
int result = default(int);
if (!int.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static int ToInt(object o)
{
return ToInt(o, default(int));
}

public static int ToInt32(object o, int _default)
{
try { return Convert.ToInt32(o); }
catch { }
int result = default(int);
if (!int.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static int ToInt32(object o)
{
return ToInt32(o, default(int));
}
#endregion

#region Int64 / long
public static long ToInt64(object o, long _default)
{
try { return Convert.ToInt64(o); }
catch { }
long result = default(long);
if (!long.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static long ToInt64(object o)
{
return ToInt64(o, default(long));
}
#endregion

#region UInt16

public static UInt16 ToUInt16(object o, UInt16 _default)
{
try { return Convert.ToUInt16(o); }
catch { }
UInt16 result = default(UInt16);
if (!UInt16.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static int ToUInt16(object o)
{
return ToUInt16(o, default(int));
}

#endregion

#region UInt32

public static UInt32 ToUInt32(object o, UInt32 _default)
{
try { return Convert.ToUInt32(o); }
catch { }
UInt32 result = default(UInt32);
if (!UInt32.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static UInt32 ToUInt32(object o)
{
return ToUInt32(o, default(int));
}

#endregion

#region UInt64

public static UInt64 ToUInt64(object o, UInt64 _default)
{
try { return Convert.ToUInt64(o); }
catch { }
UInt64 result = default(UInt64);
if (!UInt64.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static UInt64 ToUInt64(object o)
{
return ToUInt64(o, default(int));
}

#endregion

#region Single / single
public static float ToSingle(object o, float _default)
{
try { return Convert.ToSingle(o); } catch { }
float result = default(float);
if (!float.TryParse(o.ToString(), out result))
result = _default;
return result;
}
public static float ToSingle(object o)
{
return ToSingle(o, default(float));
}
#endregion

#region Double / double
public static double ToDouble(object o, double _default)
{
try { return Convert.ToDouble(o); } catch { }
double result = default(double);
if (!double.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static double ToDouble(object o)
{
return ToDouble(o, default(double));
}
#endregion

#region Boolean / bool
/// <summary>
/// 转换为Bool类型
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static bool ToBoolean(object o, bool _default)
{
try { return Convert.ToBoolean(o); }
catch { }
bool result = default(bool);
if (!bool.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static bool ToBoolean(object o)
{
return ToBoolean(o, default(bool));
}
#endregion

#region Byte / byte
/// <summary>
/// 转换为byte类型
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static byte ToByte(object o, byte _default)
{
try { return Convert.ToByte(o); }
catch { }
byte result = default(byte);
if (!byte.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static byte ToByte(object o)
{
return ToByte(o, default(byte));
}
#endregion

#region Decimal / decimal
/// <summary>
/// 转换为decimal类型
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static decimal ToDecimal(object o, decimal _default)
{
try { return Convert.ToDecimal(o); }
catch { }
decimal result = default(decimal);
if (!decimal.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static decimal ToDecimal(object o)
{
return ToDecimal(o, default(decimal));
}
#endregion

#region DateTime / datetime
/// <summary>
/// 转换为DateTime类型
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static DateTime ToDateTime(object o, DateTime _default)
{
if (o == null)
{
return _default;
}

try { return Convert.ToDateTime(o); }
catch { }
DateTime result = DateTime.MinValue;
if (!DateTime.TryParse(o.ToString(), out result))
result = _default;
return result;
}

public static DateTime ToDateTime(object o)
{
return ToDateTime(o, DateTime.Parse("1900-01-01"));
}
#endregion

#region String / string
/// <summary>
/// 转换为String
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static string ToString(object o, string _default)
{
if (o == DBNull.Value)
{
return string.Empty;
}
return (o ?? _default).ToString();
}

public static string ToString(object o)
{
return ToString(o, string.Empty);
}
#endregion

public static decimal ToRound(decimal o)
{
return TypeHelper.ToInt((o / 10).ToString("f0")) * 10;
}
}

常用的工具类2

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原文地址：http://www.cnblogs.com/zhshlimi/p/5605531.html