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/**********************************************************************************/// 说明: 数据转换工具.// 注意: 对象列表转换为DataTable或DataTable转换为对象列表.// 字段参照由对象的PropertyName决定.// 数据模型类的属性名必需与字段名一致, 包括大小写一致./**********************************************************************************/using
System;using
System.Reflection;using
System.Collections;using
System.Data;using
System.Collections.Generic;using
System.Text;using
System.ComponentModel;using
System.Xml;using
System.Web.UI;namespace
vjsdn.converter{ public
class CDataConvert { /// <summary> /// 根据类创建表结构 /// </summary> /// <param name="t"></param> /// <returns></returns> public
static DataTable CreateTable(Type t) { return
BuiltTable(t.GetProperties()); } /// <summary> /// 根据对象的属性创建数据表 /// </summary> private
static DataTable BuiltTable(PropertyInfo[] pinfo) { try { if
(pinfo == null) return
null; DataTable table = new
DataTable(); foreach
(PropertyInfo info in
pinfo) { Type type = info.PropertyType; if
(info.PropertyType.IsGenericType) type = info.PropertyType.GetGenericArguments()[0]; DataColumn column = new
DataColumn(info.Name, type); column.AllowDBNull = true; table.Columns.Add(column); } return
table; } catch
{ return
null; } } /// <summary> /// Object to Object. 将一个对象转换为指定类型的对象. /// 注意: destination内的Property必需在source内存在. /// </summary> public
static object CopyProperties(object
source, Type destination) { try { if
(source == null) return
null; object
destObj = destination.Assembly.CreateInstance(destination.FullName); PropertyInfo[] propsDest = destObj.GetType().GetProperties(); foreach
(PropertyInfo infoDest in
propsDest) { object
value = GetValueOfObject(source, infoDest.Name); if
(CanShallowCopyProperty(value)) SetPropertyValue(destObj, infoDest, value); } return
destObj; } catch
{ return
null; } } /// <summary> /// 指定参数是否可用于浅拷贝 /// </summary> private
static bool CanShallowCopyProperty(object
propValue) { if
(propValue == null) return
true; if
(propValue.GetType().IsValueType || propValue is
string) return
true; return
false; } /// <summary> /// 复制对象属性. /// </summary> public
static void CopyProperties(object
source, object
destObj) { try { if
(source == null
|| destObj == null) return; PropertyInfo[] propsDest = destObj.GetType().GetProperties(); foreach
(PropertyInfo infoDest in
propsDest) { object
value = GetValueOfObject(source, infoDest.Name); if
(CanShallowCopyProperty(value)) SetPropertyValue(destObj, infoDest, value); } } catch
{ } } /// <summary> /// 复制对象. 浅拷贝. /// </summary> public
static object CloneObject(object
source) { try { if
(source == null) return
null; Type objType = source.GetType(); object
destObj = objType.Assembly.CreateInstance(objType.FullName); PropertyInfo[] propsSource = objType.GetProperties(); foreach
(PropertyInfo infoSource in
propsSource) { object
value = GetValueOfObject(source, infoSource.Name); if
(CanShallowCopyProperty(value)) SetPropertyValue(destObj, infoSource, value); } return
destObj; } catch
{ return
null; } } /// <summary> /// 复制一个对象数组. /// </summary> public
static ArrayList CloneObjects(IList source) { if
(source == null) return
null; ArrayList ret = new
ArrayList(); foreach
(object
o in
source) ret.Add(CloneObject(o)); return
ret; } /// <summary> /// 获取对象指定属性的值 /// </summary> public
static object GetValueOfObject(object
obj, string
property) { try { if
(obj == null) return
null; Type type = obj.GetType(); PropertyInfo[] pinfo = type.GetProperties(); foreach
(PropertyInfo info in
pinfo) { if
(info.Name.ToUpper() == property.ToUpper()) return
info.GetValue(obj, null); } return
null; } catch
{ return
null; } } /// <summary> /// 纵对象数据组取出某一个对象. 返回对象指定属性名称(returnPropName)的值 /// </summary> public
static object GetObjectValueByKey(IList objects, string
keyPropName, object
keyValue, string
returnPropName) { object
o = GetObjectByKey(objects, keyPropName, keyValue); if
(o != null) return
GetValueOfObject(o, returnPropName); else return
null; } /// <summary> /// 纵对象数据组取出某一个对象. 参数指定关键字段名称(keyPropName)及值(keyValue). /// </summary> public
static object GetObjectByKey(IList objects, string
keyPropName, object
keyValue) { foreach
(object
o in
objects) { object
value = GetValueOfObject(o, keyPropName); if
(value == null) continue; if
(value.ToString().ToLower() == keyValue.ToString().ToLower()) { return
o; } } return
null; } /// <summary> /// 查找对象包含指定属性. /// </summary> public
static bool FindProperty(object
obj, string
property) { try { if
(obj == null) return
false; Type type = obj.GetType(); PropertyInfo[] pinfo = type.GetProperties(); foreach
(PropertyInfo info in
pinfo) { if
(info.Name.ToUpper() == property.ToUpper()) return
true; } return
false; } catch
{ return
false; } } public
static void SetValueofDataRow(DataRow dr, string
field, object
value) { try { if
(dr == null) return; dr[field] = value; } catch { } } /// <summary> /// 设置对象某个属性的值 /// </summary> public
static void SetValueOfObject(object
obj, string
property, object
value) { try { if
(obj == null) return; Type type = obj.GetType(); PropertyInfo[] pinfo = type.GetProperties(); foreach
(PropertyInfo info in
pinfo) { if
(info.Name.ToUpper() == property.ToUpper()) { SetPropertyValue(obj, info, value); break; } } } catch
{ } } public
static void SetPropertyValue(object
instance, PropertyInfo prop, object
value) { try { if
(prop == null) return; if
(prop.PropertyType.ToString() == "System.String") { } else
if (prop.PropertyType.ToString() == "System.Decimal") value = Decimal.Parse(value.ToString()); else
if (prop.PropertyType.ToString() == "System.Int32") value = int.Parse(value.ToString()); else
if (prop.PropertyType.ToString() == "System.Single") value = Single.Parse(value.ToString()); else
if (prop.PropertyType.ToString() == "System.DateTime") value = DateTime.Parse(value.ToString()); prop.SetValue(instance, value, null); } catch
{ } } public
static IList CSharpDataTypes() { ArrayList list = new
ArrayList(); list.Add(typeof(System.DateTime)); list.Add(typeof(System.Byte)); list.Add(typeof(System.SByte)); list.Add(typeof(System.Int16)); list.Add(typeof(System.Int32)); list.Add(typeof(System.Int64)); list.Add(typeof(System.IntPtr)); list.Add(typeof(System.UInt16)); list.Add(typeof(System.UInt32)); list.Add(typeof(System.UInt64)); list.Add(typeof(System.UIntPtr)); list.Add(typeof(System.Single)); list.Add(typeof(System.Double)); list.Add(typeof(System.Decimal)); list.Add(typeof(System.Boolean)); list.Add(typeof(System.Char)); list.Add(typeof(System.String)); return
list; } /// <summary> /// 根据IList对象创建数据表 /// </summary> public
static DataTable IListToDataTable(IList list) { try { if
(list == null) return
null; if
(list.Count <= 0) return
null; Type type = list[0].GetType(); PropertyInfo[] pinfo = type.GetProperties(); DataTable table = BuiltTable(pinfo);//创建表 DataRow row = null; foreach
(object
o in
list) { row = table.NewRow(); foreach
(PropertyInfo info in
pinfo) { object
v = info.GetValue(o, null); if
(!ColumnExists(table, info.Name)) continue; if
(null
== v) row[info.Name] = DBNull.Value; else row[info.Name] = v; } table.Rows.Add(row); } return
table; } catch
{ return
null; } } public
static bool ColumnExists(DataTable dt, string
columnName) { if
(dt == null) return
false; foreach
(DataColumn col in
dt.Columns) { if
(col.ColumnName.ToLower() == columnName.ToLower()) return
true; } return
false; } /// <summary> /// 数据表转换为IList对象,Type参数:对象类型 /// </summary> public
static IList DataTableToIList(DataTable table, Type type) { try { if
(table == null) return
null; IList list = new
object[table.Rows.Count]; object
o = null; PropertyInfo[] pinfo = type.GetProperties(); int
idx = 0; foreach
(DataRow row in
table.Rows) { o = type.Assembly.CreateInstance(type.FullName); foreach
(PropertyInfo info in
pinfo) { SetPropertyValue(o, info, GetFieldValue(row, info.Name)); } list[idx] = o; idx += 1; } return
list; } catch
{ return
null; } } /// <summary> /// 根据对象的属性取字段的值 /// </summary> private
static object GetFieldValue(DataRow row, string
propertyName) { if
(row == null) return
null; if
(row.Table.Columns.IndexOf(propertyName) >= 0) { object
value = row[propertyName]; if
(value != null
&& value is
DateTime) { if
((DateTime)value <= DateTime.MinValue.AddDays(1)) value = null; } return
value; } return
null; } public
static DataRow UpdateDataRowFromObject(DataRow row, object
o) { PropertyInfo[] pinfo = o.GetType().GetProperties(); foreach
(PropertyInfo info in
pinfo) { if
(row.Table.Columns.IndexOf(info.Name) >= 0) row[info.Name] = info.GetValue(o, null); } return
row; } public
static DataRow AddDataRowFromObject(DataTable dt, object
o) { DataRow row = dt.NewRow(); PropertyInfo[] pinfo = o.GetType().GetProperties(); foreach
(PropertyInfo info in
pinfo) { if
(dt.Columns.IndexOf(info.Name) >= 0) row[info.Name] = info.GetValue(o, null); } dt.Rows.Add(row); return
row; } public
static void SetTwoRowValues(DataRow rowFrom, DataRow rowTo) { for
(int
i = 0; i < rowFrom.Table.Columns.Count; i++) { rowTo[i] = rowFrom[i]; } } /// <summary> /// 从源行中对相同字段名的列付值 /// </summary> /// <param name="drSouce"></param> /// <param name="drTo"></param> public
static void SetTwoRowSameColValue(DataRow drSource, DataRow drTo) { for
(int
i = 0; i < drSource.Table.Columns.Count; i++) { string
fieldname = drSource.Table.Columns[i].ColumnName; DataColumn col = drTo.Table.Columns[fieldname]; if
(col != null) { drTo[fieldname] = drSource[fieldname]; } } } /// <summary> /// 数据行(DataRow)转换为对象,对象的Type由type参数决定. /// </summary> public
static object DataRowToObject(DataRow row, Type type) { if
(null
== row) return
null; try { object
o = type.Assembly.CreateInstance(type.FullName); PropertyInfo[] pinfo = type.GetProperties(); foreach
(PropertyInfo info in
pinfo) { //字段名称与对象属性相符才赋值 if
(row.Table.Columns.IndexOf(info.Name) >= 0) { object
v = GetFieldValue(row, info.Name); SetPropertyValue(o, info, v); } } return
o; } catch
{ return
null; } } /// <summary> /// ArrayList转换为对象数组. /// </summary> public
static object[] ToObjects(IList source) { if
(null
== source) return
null; object[] ret = new
object[source.Count]; for
(int
i = 0; i < source.Count; i++) ret[i] = source[i]; return
ret; } /// <summary> /// 对象数组转换为ArrayList. /// </summary> public
static ArrayList ToArrayList(IList list) { if
(list == null) return
null; ArrayList arrlist = new
ArrayList(); foreach
(object
o in
list) arrlist.Add(o); return
arrlist; } /// <summary> /// 对象数组转换为ArrayList. /// </summary> public
static ArrayList ToArrayList(object[] source) { if
(null
!= source) return
new ArrayList((ICollection)source); else
//如果来源数据为null,返回一个空的ArrayList. return
new ArrayList(); } /// <summary> /// 把字符串以逗号分格，转换成数据库格式in(‘a‘,‘b‘) /// </summary> /// <param name="input"></param> /// <returns></returns> public
static string ToSQLInDataFormat(string
input) { string
HQL = string.Empty; if
(input == string.Empty) return
HQL; string[] sArray = input.Split(‘,‘); foreach
(string
str in
sArray) { if
(str.Length == 0) continue; HQL += "‘"
+ str + "‘,"; } if
(HQL.Substring(HQL.Length - 1, 1) == ",") HQL = HQL.Substring(0, HQL.Length - 1); return
HQL; } /// <summary> /// 把字符串以逗号分格，转换成数据库格式‘‘a‘‘,‘‘b‘‘ /// </summary> public
static string ToSQLInDataFormatTwo(string
input) { string
HQL = string.Empty; if
(input == string.Empty) return
HQL; string[] sArray = input.Split(‘,‘); foreach
(string
str in
sArray) { if
(str.Length == 0) continue; HQL += "‘‘"
+ str + "‘‘,"; } if
(HQL.Substring(HQL.Length - 1, 1) == ",") HQL = HQL.Substring(0, HQL.Length - 1); return
HQL; } public
static string ToSQLInDataFormat(string[] input) { string
HQL = string.Empty; if
(input.Length == 0) return
HQL; foreach
(string
str in
input) { HQL += "‘"
+ str + "‘,"; } if
(HQL.Substring(HQL.Length - 1, 1) == ",") HQL = HQL.Substring(0, HQL.Length - 1); return
HQL; } /// <summary> /// 从table转成dataset /// </summary> /// <param name="dt"></param> /// <returns></returns> public
static DataSet TableToDataSet(DataTable dt) { DataSet ds = new
DataSet(); ds.Tables.Add(dt); return
ds; } public
static DataSet TableToDataSet(DataTable[] dtArr) { DataSet ds = new
DataSet(); for
(int
i = 0; i < dtArr.Length; i++) { ds.Tables.Add(dtArr[i]); } return
ds; } /// <summary> /// 修改对表的某列的值 /// </summary> /// <param name="dt"></param> /// <param name="value"></param> public
static bool UpdateTableCol(DataTable dt, string
fieldName, object
value) { try { if
(dt.Columns.IndexOf(fieldName) < 0) throw
new Exception("表没有"
+ fieldName + "列！"); foreach
(DataRow dr in
dt.Rows) { dr[fieldName] = value; } return
true; } catch { return
false; } } /// <summary> /// 以逗号分格字符串，返回数组 /// 如果第一个和最后一个字符为, 去掉 /// </summary> /// <param name="str"></param> /// <returns></returns> public
static string[] ToStringSplit(string
str) { if
(str.Length > 0) { if
(str[0] == ‘,‘) str = str.Substring(1, str.Length - 1); if
(str[str.Length - 1] == ‘,‘) str = str.Substring(0, str.Length - 1); } string[] sArray = str.Split(‘,‘); return
sArray; } /// <summary> /// 把一个行的数据新增一个表中 /// </summary> /// <param name="dt"></param> /// <param name="dr"></param> /// <returns></returns> public
static DataTable AddTableRowByRow(DataTable dt, DataRow dr) { bool
b = false; DataRow drNew = dt.NewRow(); for
(int
i = 0; i < dr.Table.Columns.Count; i++) { string
colname = dr.Table.Columns[i].ColumnName; if
(dt.Columns.IndexOf(colname) >= 0) { drNew[colname] = dr[colname]; b = true; } } if
(b) dt.Rows.Add(drNew); return
dt; } } /// <summary> /// 对字符或字符串的处理 /// </summary> public
class DOString { /// <summary> /// 把字符转成大写并去两边空格 /// </summary> public
static string ToTrimAndUpper(string
str) { return
str.Trim().ToUpper(); } public
static string ToTrimAndUpper(object
o) { return
o.ToString().Trim().ToUpper(); } public
static string ToTrimAndBigToSmall(object
o) { return
BigToSmall(o.ToString().Trim(), 1); } /// <summary> /// 返回一个半角 去左右空格 大写的字符串 /// </summary> public
static string ToTUBS(object
o) { return
BigToSmall(o.ToString().Trim().ToUpper(), 1); } /// <summary> /// 判断字符是否是数字。是返回true /// </summary> /// <param name="c"></param> /// <returns></returns> public
static bool NuNumber(char
c) { if
((int)c >= 48 && (int)c <= 57) return
true; else return
false; } /// <summary> /// 去除千分号 /// </summary> public
static object OffkiloSign(object
obj) { if
(obj == null) return
obj; string
s = obj.ToString(); return
s.Replace(",", string.Empty); } /// <summary> /// 全角半角间转换 direction =-1 (半角转全角) /// </summary> public
static string BigToSmall(string
content, int
direction) { string
strBig, to_strBig; strBig = "ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺ０１２３４５６７８９ ＇﹃﹄『』＄／ａｂｃｄｅｆｇｈｉｊｋｌｍｎｏｐｑｒｓｔｕｖｗｘｙｚ．＊"; to_strBig = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ‘“”“”$/abcdefghijklmnopqrstuvwxyz.*"; int
i; for
(i = 0; i < strBig.Length; i++) { if
(direction != -1) { content = content.Replace(strBig[i], to_strBig[i]); } else { content = content.Replace(to_strBig[i], strBig[i]); } } return
content; } /// <summary> /// 对比两个字符串的ASCII值大小，要是X1>X2,将X1,X2交换 /// </summary> public
static void CompareStringASCII(ref
string x1, ref
string x2) { if
(string.IsNullOrEmpty(x1) || string.IsNullOrEmpty(x2)) return; string
y1 = x1.ToUpper(); string
y2 = x2.ToUpper(); int
iLength = y1.Length; if
(y2.Length < iLength) iLength = y2.Length; for
(int
i = 0; i < iLength; i++) { int
iASC1 = (int)y1[i]; int
iASC2 = (int)y2[i]; if
(iASC1 > iASC2) { string
tmp = x1; x1 = x2; x2 = tmp; break; } if
(iASC1 < iASC2) break; } } /// <summary> /// 查找出text中含有spilt字符串从第几个字符结束的位置数组 /// </summary> /// <param name="text">"12345678901234567890"</param> /// <param name="spilt">"12"</param> /// <returns>2，13</returns> public
static int[] DoStringIndexArray(string
text, string
spilt) { int[] ret = null; try { int
iStart = 0; int
iEnd = text.Length - 1; int
spiltLength = spilt.Length; ArrayList list = new
ArrayList(); while
(iStart <= iEnd) { int
index = text.IndexOf(spilt, iStart); iStart = index + spiltLength; if
(iStart <= iEnd) { list.Add(iStart); } } ret = new
int[list.Count]; for
(int
i = 0; i < ret.Length; i++) { ret[i] = Convert.ToInt32(list[i]); } } catch { ret = null; } return
ret; } }} |
对象列表转换为DataTable或DataTable转换为对象列表.,布布扣,bubuko.com
对象列表转换为DataTable或DataTable转换为对象列表.
原文：http://www.cnblogs.com/hongtian/p/3596572.html