ConvertTo.cs 强制转换类

  1using System;
  2using System.Collections.Generic;
  3using System.Text;
  4
  5namespace ChinaValue.CommonV2008
  6{
  7    /**//// <summary>
  8    /// 将字符串转换成任意其他数据
  9    /// </summary>
 10    public static class ConvertStr
 11    {
 12        /**//// <summary>
 13        /// 将字符串转换为Int16
 14        /// </summary>
 15        /// <param name="str"></param>
 16        /// <returns></returns>
 17        public static Int16 ToInt16(String str, Int16 defValue)
 18        {
 19            Int16 outValue;
 20
 21            if (!String.IsNullOrEmpty(str))
 22            {
 23                if (Int16.TryParse(str, out outValue))
 24                {
 25                    return outValue;
 26                }
 27            }
 28
 29            return defValue;
 30        }
 31        
 32        /**//// <summary>
 33        /// 将字符串转换为Int32
 34        /// </summary>
 35        /// <param name="str"></param>
 36        /// <returns></returns>
 37        public static Int32 ToInt32(String str)
 38        {
 39            return ToInt32(str, 0);
 40        }
 41
 42        /**//// <summary>
 43        /// 将类型转换为Int32
 44        /// </summary>
 45        /// <param name="obj">The obj.</param>
 46        /// <returns></returns>
 47        public static Int32 ToInt32(object obj, Int32 defValue)
 48        {
 49            if (obj != null && obj != DBNull.Value)
 50            {
 51                return ToInt32(obj.ToString(), defValue);
 52            }
 53            else
 54            {
 55                return defValue;
 56            }
 57        }
 58
 59        /**//// <summary>
 60        /// 将字符串转换为Int32
 61        /// </summary>
 62        /// <param name="str"></param>
 63        /// <returns></returns>
 64        public static Int32 ToInt32(String str, Int32 defValue)
 65        {
 66            Int32 outValue;
 67
 68            if (!String.IsNullOrEmpty(str))
 69            {
 70                if (Int32.TryParse(str, out outValue))
 71                {
 72                    return outValue;
 73                }
 74            }
 75
 76            return defValue;
 77        }
 78
 79        /**//// <summary>
 80        /// 将字符串转换为Int64
 81        /// </summary>
 82        /// <param name="str"></param>
 83        /// <returns></returns>
 84        public static Int64 ToInt64(String str, Int64 defValue)
 85        {
 86            Int64 outValue;
 87
 88            if (!String.IsNullOrEmpty(str))
 89            {
 90                if (Int64.TryParse(str, out outValue))
 91                {
 92                    return outValue;
 93                }
 94            }
 95
 96            return defValue;
 97        }
 98
 99        /**//// <summary>
100        /// 将字符串转换为DateTime
101        /// </summary>
102        /// <param name="str"></param>
103        /// <returns></returns>
104        public static DateTime ToDateTime(String str)
105        {
106            DateTime outValue;
107
108            if (!String.IsNullOrEmpty(str))
109            {
110                if (DateTime.TryParse(str, out outValue))
111                {
112                    return outValue;
113                }
114            }
115
116            return DateTime.MinValue;
117        }
118
119        /**//// <summary>
120        /// 将字符串转换为DateTime
121        /// </summary>
122        /// <param name="str"></param>
123        /// <returns></returns>
124        public static DateTime ToDateTime(String str, DateTime defValue)
125        {
126            DateTime outValue;
127
128            if (!String.IsNullOrEmpty(str))
129            {
130                if (DateTime.TryParse(str, out outValue))
131                {
132                    return outValue;
133                }
134            }
135
136            return defValue;
137        }
138
139        /**//// <summary>
140        /// 将对象转换为DateTime
141        /// </summary>
142        /// <param name="obj">The obj.</param>
143        /// <param name="defValue">The def value.</param>
144        /// <returns></returns>
145        public static DateTime ToDateTime(object obj, DateTime defValue)
146        {
147            if (obj != null)
148            {
149                defValue = ToDateTime(obj.ToString(), defValue);
150            }
151
152            return defValue; 
153        }
154
155        /**//// <summary>
156        /// 将字符串转换为Boolean
157        /// </summary>
158        /// <param name="str"></param>
159        /// <returns></returns>
160        public static Boolean ToBoolean(String str)
161        {
162            if (str == "0" || str.ToLower() == "false")
163            {
164                return false;
165            }
166            else
167            {
168                return true;
169            }
170        }
171
172        /**//// <summary>
173        /// 将字符串转换为Boolean
174        /// </summary>
175        /// <param name="str"></param>
176        /// <returns></returns>
177        public static Boolean ToBoolean(Object obj)
178        {
179            if (obj == null)
180            {
181                return false;
182            }
183            else
184            {
185                return ToBoolean(obj.ToString());
186            }
187        }
188
189        /**//// <summary>
190        /// 将字符串转换为Decimal
191        /// </summary>
192        /// <param name="str"></param>
193        /// <returns></returns>
194        public static Decimal ToDecimal(String str, Decimal defValue)
195        {
196            Decimal outValue;
197
198            if (!String.IsNullOrEmpty(str))
199            {
200                if (Decimal.TryParse(str, out outValue))
201                {
202                    return outValue;
203                }
204            }
205
206            return defValue;
207        }
208
209        /**//// <summary>
210        /// 将字符串转换为Double
211        /// </summary>
212        /// <param name="str"></param>
213        /// <returns></returns>
214        public static Double ToDouble(String str, Double defValue)
215        {
216            Double outValue;
217
218            if (!String.IsNullOrEmpty(str))
219            {
220                if (Double.TryParse(str, out outValue))
221                {
222                    return outValue;
223                }
224            }
225
226            return defValue;
227        }
228
229        /**//// <summary>
230        /// 将字符串转换为Float
231        /// </summary>
232        /// <param name="str"></param>
233        /// <returns></returns>
234        public static Single ToFloat(String str, Single defValue)
235        {
236            float outValue;
237
238            if (!String.IsNullOrEmpty(str))
239            {
240                if (float.TryParse(str, out outValue))
241                {
242                    return outValue;
243                }
244            }
245
246            return defValue;
247        }
248
249        /**//// <summary>
250        /// 将字符串转换成Sql数据库的bit 型(true 时返回 1, 其他返回0)
251        /// </summary>
252        /// <param name="isTrue">if set to <c>true</c> [is true].</param>
253        /// <returns></returns>
254        public static int ToDbBit(bool isTrue)
255        {
256            int result = 0;
257            if (isTrue)
258            {
259                result = 1;
260            }
261            return result;
262        }
263    }
264}
265