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C#中怎么自定義類型轉(zhuǎn)換函數(shù),針對這個問題,這篇文章詳細介紹了相對應(yīng)的分析和解答,希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
/// <summary> /// 將字符型類型轉(zhuǎn)換為整型值 /// </summary> /// <param name="objValue">字符型</param> /// <param name="defaultValue">無法轉(zhuǎn)換時的默認值</param> /// <returns>整型值</returns> public static int IntParse(string objValue, int defaultValue) { int returnValue = defaultValue; if (!string.IsNullOrEmpty(objValue)) { try { returnValue = int.Parse(objValue); } catch { returnValue = defaultValue; } } return returnValue; } /// <summary> /// 將對象類型轉(zhuǎn)換為整型值 /// </summary> /// <param name="objValue">對象類型</param> /// <param name="defaultValue">無法轉(zhuǎn)換時的默認值</param> /// <returns>整型值</returns> public static int IntParse(object objValue, int defaultValue) { int returnValue = defaultValue; if (objValue != null && objValue != DBNull.Value) { try { returnValue = int.Parse(objValue.ToString()); } catch { returnValue = defaultValue; } } //返回值 return returnValue; } /// <summary> /// 將對象類型轉(zhuǎn)換為整型值 /// </summary> /// <param name="objValue">對象類型</param> /// <returns>整型值</returns> public static int IntParse(object objValue) { return IntParse(objValue, 0); } /// <summary> /// 將對象類型轉(zhuǎn)換為日期值 /// </summary> /// <param name="objValue">對象類型</param> /// <param name="defaultValue">無法轉(zhuǎn)換時的默認值</param> /// <returns>日期值</returns> public static DateTime DateTimeParse(object objValue, DateTime defaultValue) { DateTime returnValue = defaultValue; if (objValue != null && objValue != DBNull.Value) { try { returnValue = DateTime.Parse(objValue.ToString()); } catch { returnValue = defaultValue; } } //返回值 return returnValue; } /// <summary> /// 將對象類型轉(zhuǎn)換為日期值 /// </summary> /// <param name="objValue">對象類型</param> /// <returns>日期值</returns> public static DateTime DateTimeParse(object objValue) { return DateTimeParse(objValue, DateTime.MinValue); } /// <summary> /// 將對象類型轉(zhuǎn)換為字符型 /// </summary> /// <param name="objValue">對象類型</param> /// <param name="defaultValue">無法轉(zhuǎn)換時的默認值</param> /// <returns>字符型</returns> public static string StringParse(object objValue, string defaultValue) { string returnValue = defaultValue; if (objValue != null && objValue != DBNull.Value) { try { returnValue = objValue.ToString(); } catch { returnValue = defaultValue; ; } } //返回值 return returnValue; } /// <summary> /// 將對象類型轉(zhuǎn)換為字符型 /// </summary> /// <param name="objValue">對象類型</param> /// <returns>字符型</returns> public static string StringParse(object objValue) { return StringParse(objValue, string.Empty); } /// <summary> /// 將對象類型轉(zhuǎn)換為GUID /// </summary> /// <param name="objValue">對象類型</param> /// <param name="defaultValue">無法轉(zhuǎn)換時的默認值</param> /// <returns>GUID</returns> public static Guid GuidParse(object objValue, Guid defaultValue) { Guid returnValue = defaultValue; if (objValue != null && objValue != DBNull.Value) { try { returnValue = new Guid(objValue.ToString()); } catch { returnValue = defaultValue; ; } } //返回值 return returnValue; } /// <summary> /// 將對象類型轉(zhuǎn)換為GUID /// </summary> /// <param name="objValue">對象類型</param> /// <returns>GUID</returns> public static Guid GuidParse(object objValue) { return GuidParse(objValue, Guid.Empty); } /// <summary> /// C#類型轉(zhuǎn)換函數(shù) /// </summary> /// <typeparam name="T">目標類型值</typeparam> /// <param name="objValue">對象類型</param> /// <param name="defaultValue">無法轉(zhuǎn)換時的默認值</param> /// <returns>目標類型值</returns> public static T Parse<T>(object objValue, T defaultValue) { T returnValue = defaultValue; if (objValue != null && objValue != DBNull.Value) { try { returnValue = (T)objValue; } catch { returnValue = defaultValue; } } //返回值 return returnValue; } /// <summary> /// C#類型轉(zhuǎn)換函數(shù) /// </summary> /// <typeparam name="T">目標類型值</typeparam> /// <param name="objValue">對象類型</param> /// <returns>目標類型值</returns> public static T Parse<T>(object objValue) { return Parse<T>(objValue, default(T)); }
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