C#200个基础工具类，史上最全快收藏下载
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了C#200个基础工具类，史上最全快收藏下载，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含18114字，纯文字阅读大概需要26分钟。
内容图文
场景
包含工具类部分如下：
CSV文件转换;DataTable转实体;Excel操作类;FTP操作类;Html操作类;IP辅助类;JSON操作;JS操作;URL的操作类;XML操作类;处理多媒体的公共类;弹出消息类;二维码操作类;汉字转拼音;加密解密;科学计数，数学;类型转换;配置文件操作类;上传下载;时间操作类;视频帮助类;数据展示控件绑定数据类;条形码帮助类;图片操作类;文件操作类;序列化;压缩解压缩;邮件;字符串。
实现
部分代码展示
Excel导出类
using System;
using System.Web;
using System.Web.UI;
using System.IO;
using System.Web.UI.WebControls;
namespace Common.Utility
{
public class ExportExcel
{
protected void ExportData(string strContent, string FileName)
{
FileName = FileName + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Charset = "gb2312";
HttpContext.Current.Response.ContentType = "application/ms-excel";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
//this.Page.EnableViewState = false;
// 添加头信息，为"文件下载/另存为"对话框指定默认文件名
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + FileName + ".xls");
// 把文件流发送到客户端
HttpContext.Current.Response.Write("<html><head><meta http-equiv=Content-Type content=\"text/html; charset=utf-8\">");
HttpContext.Current.Response.Write(strContent);
HttpContext.Current.Response.Write("</body></html>");
// 停止页面的执行
//Response.End();
}
/// <summary>
/// 导出Excel
/// </summary>
/// <param name="obj"></param>
public void ExportData(GridView obj)
{
try
{
string style = "";
if (obj.Rows.Count > 0)
{
style = @"<style> .text { mso-number-format:\@; } </style> ";
}
else
{
style = "no data.";
}
HttpContext.Current.Response.ClearContent();
DateTime dt = DateTime.Now;
string filename = dt.Year.ToString() + dt.Month.ToString() + dt.Day.ToString() + dt.Hour.ToString() + dt.Minute.ToString() + dt.Second.ToString();
HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename=ExportData" + filename + ".xls");
HttpContext.Current.Response.ContentType = "application/ms-excel";
HttpContext.Current.Response.Charset = "GB2312";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
obj.RenderControl(htw);
HttpContext.Current.Response.Write(style);
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
catch
{
}
}
}
}
/*实际应用的例子
if (list.Count > 0)
{
* //1.实例化
xftwl.Infrastructure.ExportExcel ex = new Infrastructure.ExportExcel();
* //2.指定数据源
GridView gv = new GridView();
gv.DataSource = list;
gv.DataBind();
//3.设置导出的excel某列格式
if(gv.Rows.Count>0)
{
for (int j = 0; j < gv.Rows.Count; j++)
{
//把每行第二列格式设为文本格式
gv.Rows[j].Cells[1].Attributes.Add("style", "mso-number-format:'\\@'");
//每行第三列格式：两位小数
gv.Rows[j].Cells[2].Attributes.Add("style", "mso-number-format:'0\\.00'");
}
}
ex.ExportData(gv);
}
*/
Json操作
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Reflection;
using System.Collections;
using System.Data.Common;
using Newtonsoft.Json;
using System.IO;
namespace Common.Utility
{
//JSON转换类
public class ConvertJson
{
#region 私有方法
/// <summary>
/// 过滤特殊字符
/// </summary>
private static string String2Json(String s)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.Length; i++)
{
char c = s.ToCharArray()[i];
switch (c)
{
case '\"':
sb.Append("\\\""); break;
case '\\':
sb.Append("\\\\"); break;
case '/':
sb.Append("\\/"); break;
case '\b':
sb.Append("\\b"); break;
case '\f':
sb.Append("\\f"); break;
case '\n':
sb.Append("\\n"); break;
case '\r':
sb.Append("\\r"); break;
case '\t':
sb.Append("\\t"); break;
default:
sb.Append(c); break;
}
}
return sb.ToString();
}
/// <summary>
/// 格式化字符型、日期型、布尔型
/// </summary>
private static string StringFormat(string str, Type type)
{
if (type == typeof(string))
{
str = String2Json(str);
str = "\"" + str + "\"";
}
else if (type == typeof(DateTime))
{
str = "\"" + str + "\"";
}
else if (type == typeof(bool))
{
str = str.ToLower();
}
else if (type != typeof(string) && string.IsNullOrEmpty(str))
{
str = "\"" + str + "\"";
}
return str;
}
#endregion
#region List转换成Json
/// <summary>
/// List转换成Json
/// </summary>
public static string ListToJson<T>(IList<T> list)
{
object obj = list[0];
return ListToJson<T>(list, obj.GetType().Name);
}
/// <summary>
/// List转换成Json
/// </summary>
public static string ListToJson<T>(IList<T> list, string jsonName)
{
StringBuilder Json = new StringBuilder();
if (string.IsNullOrEmpty(jsonName)) jsonName = list[0].GetType().Name;
Json.Append("{\"" + jsonName + "\":[");
if (list.Count > 0)
{
for (int i = 0; i < list.Count; i++)
{
T obj = Activator.CreateInstance<T>();
PropertyInfo[] pi = obj.GetType().GetProperties();
Json.Append("{");
for (int j = 0; j < pi.Length; j++)
{
Type type = pi[j].GetValue(list[i], null).GetType();
Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(pi[j].GetValue(list[i], null).ToString(), type));
if (j < pi.Length - 1)
{
Json.Append(",");
}
}
Json.Append("}");
if (i < list.Count - 1)
{
Json.Append(",");
}
}
}
Json.Append("]}");
return Json.ToString();
}
#endregion
#region 对象转换为Json
/// <summary>
/// 对象转换为Json
/// </summary>
/// <param name="jsonObject">对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(object jsonObject)
{
string jsonString = "{";
PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();
for (int i = 0; i < propertyInfo.Length; i++)
{
object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);
string value = string.Empty;
if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)
{
value = "'" + objectValue.ToString() + "'";
}
else if (objectValue is string)
{
value = "'" + ToJson(objectValue.ToString()) + "'";
}
else if (objectValue is IEnumerable)
{
value = ToJson((IEnumerable)objectValue);
}
else
{
value = ToJson(objectValue.ToString());
}
jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ",";
}
jsonString.Remove(jsonString.Length - 1, jsonString.Length);
return jsonString + "}";
}
#endregion
#region 对象集合转换Json
/// <summary>
/// 对象集合转换Json
/// </summary>
/// <param name="array">集合对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(IEnumerable array)
{
string jsonString = "[";
foreach (object item in array)
{
jsonString += ToJson(item) + ",";
}
jsonString.Remove(jsonString.Length - 1, jsonString.Length);
return jsonString + "]";
}
#endregion
#region 普通集合转换Json
/// <summary>
/// 普通集合转换Json
/// </summary>
/// <param name="array">集合对象</param>
/// <returns>Json字符串</returns>
public static string ToArrayString(IEnumerable array)
{
string jsonString = "[";
foreach (object item in array)
{
jsonString = ToJson(item.ToString()) + ",";
}
jsonString.Remove(jsonString.Length - 1, jsonString.Length);
return jsonString + "]";
}
#endregion
#region DataSet转换为Json
/// <summary>
/// DataSet转换为Json
/// </summary>
/// <param name="dataSet">DataSet对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(DataSet dataSet)
{
string jsonString = "{";
foreach (DataTable table in dataSet.Tables)
{
jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
}
jsonString = jsonString.TrimEnd(',');
return jsonString + "}";
}
#endregion
#region Datatable转换为Json
/// <summary>
/// Datatable转换为Json
/// </summary>
/// <param name="table">Datatable对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(DataTable dt)
{
StringBuilder jsonString = new StringBuilder();
jsonString.Append("[");
DataRowCollection drc = dt.Rows;
for (int i = 0; i < drc.Count; i++)
{
jsonString.Append("{");
for (int j = 0; j < dt.Columns.Count; j++)
{
string strKey = dt.Columns[j].ColumnName;
string strValue = drc[i][j].ToString();
Type type = dt.Columns[j].DataType;
jsonString.Append("\"" + strKey + "\":");
strValue = StringFormat(strValue, type);
if (j < dt.Columns.Count - 1)
{
jsonString.Append(strValue + ",");
}
else
{
jsonString.Append(strValue);
}
}
jsonString.Append("},");
}
jsonString.Remove(jsonString.Length - 1, 1);
jsonString.Append("]");
return jsonString.ToString();
}
/// <summary>
/// DataTable转换为Json
/// </summary>
public static string ToJson(DataTable dt, string jsonName)
{
StringBuilder Json = new StringBuilder();
if (string.IsNullOrEmpty(jsonName)) jsonName = dt.TableName;
Json.Append("{\"" + jsonName + "\":[");
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
Json.Append("{");
for (int j = 0; j < dt.Columns.Count; j++)
{
Type type = dt.Rows[i][j].GetType();
Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j].ToString(), type));
if (j < dt.Columns.Count - 1)
{
Json.Append(",");
}
}
Json.Append("}");
if (i < dt.Rows.Count - 1)
{
Json.Append(",");
}
}
}
Json.Append("]}");
return Json.ToString();
}
#endregion
#region DataReader转换为Json
/// <summary>
/// DataReader转换为Json
/// </summary>
/// <param name="dataReader">DataReader对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(DbDataReader dataReader)
{
StringBuilder jsonString = new StringBuilder();
jsonString.Append("[");
while (dataReader.Read())
{
jsonString.Append("{");
for (int i = 0; i < dataReader.FieldCount; i++)
{
Type type = dataReader.GetFieldType(i);
string strKey = dataReader.GetName(i);
string strValue = dataReader[i].ToString();
jsonString.Append("\"" + strKey + "\":");
strValue = StringFormat(strValue, type);
if (i < dataReader.FieldCount - 1)
{
jsonString.Append(strValue + ",");
}
else
{
jsonString.Append(strValue);
}
}
jsonString.Append("},");
}
dataReader.Close();
jsonString.Remove(jsonString.Length - 1, 1);
jsonString.Append("]");
return jsonString.ToString();
}
#endregion
#region Datatable转换为Json 2
/// <summary>
/// Datatable转换为Json 2
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static List<Dictionary<string, object>> DataTableToDictionary(DataTable dt)
{
List<Dictionary<string, object>> list = new List<Dictionary<string, object>>();
foreach (DataRow dr in dt.Rows)
{
Dictionary<string, object> result = new Dictionary<string, object>();
foreach (DataColumn dc in dt.Columns)
{
result.Add(dc.ColumnName, dr[dc].ToString());
}
list.Add(result);
}
return list;
}
#endregion
#region SerializeObject
/// <summary>
/// SerializeObject
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static string SerializeObject(object o)
{
string json = JsonConvert.SerializeObject(o);
return json;
}
#endregion
#region 解析JSON字符串生成对象实体
/// <summary>
/// 解析JSON字符串生成对象实体
/// </summary>
/// <typeparam name="T">对象类型</typeparam>
/// <param name="json">json字符串(eg.{"ID":"112","Name":"石子儿"})</param>
/// <returns>对象实体</returns>
public static T DeserializeJsonToObject<T>(string json) where T : class
{
JsonSerializer serializer = new JsonSerializer();
StringReader sr = new StringReader(json);
object o = serializer.Deserialize(new JsonTextReader(sr), typeof(T));
T t = o as T;
return t;
}
#endregion
#region 解析JSON数组生成对象实体集合
/// <summary>
/// 解析JSON数组生成对象实体集合
/// </summary>
/// <typeparam name="T">对象类型</typeparam>
/// <param name="json">json数组字符串(eg.[{"ID":"112","Name":"石子儿"}])</param>
/// <returns>对象实体集合</returns>
public static List<T> DeserializeJsonToList<T>(string json) where T : class
{
JsonSerializer serializer = new JsonSerializer();
StringReader sr = new StringReader(json);
object o = serializer.Deserialize(new JsonTextReader(sr), typeof(List<T>));
List<T> list = o as List<T>;
return list;
}
#endregion
#region 反序列化JSON到给定的匿名对象
/// <summary>
/// 反序列化JSON到给定的匿名对象.
/// </summary>
/// <typeparam name="T">匿名对象类型</typeparam>
/// <param name="json">json字符串</param>
/// <param name="anonymousTypeObject">匿名对象</param>
/// <returns>匿名对象</returns>
public static T DeserializeAnonymousType<T>(string json, T anonymousTypeObject)
{
T t = JsonConvert.DeserializeAnonymousType(json, anonymousTypeObject);
return t;
}
#endregion
}
}
XML操作类
using System.Xml;
using System.Data;
namespace Common.Utility
{
/// <summary>
/// Xml的操作公共类
/// </summary>
public class XmlHelper
{
#region 字段定义
/// <summary>
/// XML文件的物理路径
/// </summary>
private string _filePath = string.Empty;
/// <summary>
/// Xml文档
/// </summary>
private XmlDocument _xml;
/// <summary>
/// XML的根节点
/// </summary>
private XmlElement _element;
#endregion
#region 构造方法
/// <summary>
/// 实例化XmlHelper对象
/// </summary>
/// <param name="xmlFilePath">Xml文件的相对路径</param>
public XmlHelper(string xmlFilePath)
{
//获取XML文件的绝对路径
_filePath = System.Web.HttpContext.Current.Server.MapPath(xmlFilePath);
}
#endregion
#region 创建XML的根节点
/// <summary>
/// 创建XML的根节点
/// </summary>
private void CreateXMLElement()
{
//创建一个XML对象
_xml = new XmlDocument();
if (DirFile.IsExistFile(_filePath))
{
//加载XML文件
_xml.Load(this._filePath);
}
//为XML的根节点赋值
_element = _xml.DocumentElement;
}
#endregion
#region 获取指定XPath表达式的节点对象
/// <summary>
/// 获取指定XPath表达式的节点对象
/// </summary>
/// <param name="xPath">XPath表达式,
/// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem"
/// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点.
/// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性.
/// </param>
public XmlNode GetNode(string xPath)
{
//创建XML的根节点
CreateXMLElement();
//返回XPath节点
return _element.SelectSingleNode(xPath);
}
#endregion
#region 获取指定XPath表达式节点的值
/// <summary>
/// 获取指定XPath表达式节点的值
/// </summary>
/// <param name="xPath">XPath表达式,
/// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem"
/// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点.
/// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性.
/// </param>
public string GetValue(string xPath)
{
//创建XML的根节点
CreateXMLElement();
//返回XPath节点的值
return _element.SelectSingleNode(xPath).InnerText;
}
#endregion
#region 获取指定XPath表达式节点的属性值
/// <summary>
/// 获取指定XPath表达式节点的属性值
/// </summary>
/// <param name="xPath">XPath表达式,
/// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem"
/// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点.
/// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性.
/// </param>
/// <param name="attributeName">属性名</param>
public string GetAttributeValue(string xPath, string attributeName)
{
//创建XML的根节点
CreateXMLElement();
//返回XPath节点的属性值
return _element.SelectSingleNode(xPath).Attributes[attributeName].Value;
}
#endregion
#region 新增节点
/// <summary>
/// 1. 功能：新增节点。
/// 2. 使用条件：将任意节点插入到当前Xml文件中。
/// </summary>
/// <param name="xmlNode">要插入的Xml节点</param>
public void AppendNode(XmlNode xmlNode)
{
//创建XML的根节点
CreateXMLElement();
//导入节点
XmlNode node = _xml.ImportNode(xmlNode, true);
//将节点插入到根节点下
_element.AppendChild(node);
}
/// <summary>
/// 1. 功能：新增节点。
/// 2. 使用条件：将DataSet中的第一条记录插入Xml文件中。
/// </summary>
/// <param name="ds">DataSet的实例，该DataSet中应该只有一条记录</param>
public void AppendNode(DataSet ds)
{
//创建XmlDataDocument对象
XmlDataDocument xmlDataDocument = new XmlDataDocument(ds);
//导入节点
XmlNode node = xmlDataDocument.DocumentElement.FirstChild;
//将节点插入到根节点下
AppendNode(node);
}
#endregion
#region 删除节点
/// <summary>
/// 删除指定XPath表达式的节点
/// </summary>
/// <param name="xPath">XPath表达式,
/// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem"
/// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点.
/// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性.
/// </param>
public void RemoveNode(string xPath)
{
//创建XML的根节点
CreateXMLElement();
//获取要删除的节点
XmlNode node = _xml.SelectSingleNode(xPath);
//删除节点
_element.RemoveChild(node);
}
#endregion //删除节点
#region 保存XML文件
/// <summary>
/// 保存XML文件
/// </summary>
public void Save()
{
//创建XML的根节点
CreateXMLElement();
//保存XML文件
_xml.Save(this._filePath);
}
#endregion //保存XML文件
#region 静态方法
#region 创建根节点对象
/// <summary>
/// 创建根节点对象
/// </summary>
/// <param name="xmlFilePath">Xml文件的相对路径</param>
private static XmlElement CreateRootElement(string xmlFilePath)
{
//定义变量，表示XML文件的绝对路径
string filePath = "";
//获取XML文件的绝对路径
filePath = System.Web.HttpContext.Current.Server.MapPath(xmlFilePath);
//创建XmlDocument对象
XmlDocument xmlDocument = new XmlDocument();
//加载XML文件
xmlDocument.Load(filePath);
//返回根节点
return xmlDocument.DocumentElement;
}
#endregion
#region 获取指定XPath表达式节点的值
/// <summary>
/// 获取指定XPath表达式节点的值
/// </summary>
/// <param name="xmlFilePath">Xml文件的相对路径</param>
/// <param name="xPath">XPath表达式,
/// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem"
/// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点.
/// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性.
/// </param>
public static string GetValue(string xmlFilePath, string xPath)
{
//创建根对象
XmlElement rootElement = CreateRootElement(xmlFilePath);
//返回XPath节点的值
return rootElement.SelectSingleNode(xPath).InnerText;
}
#endregion
#region 获取指定XPath表达式节点的属性值
/// <summary>
/// 获取指定XPath表达式节点的属性值
/// </summary>
/// <param name="xmlFilePath">Xml文件的相对路径</param>
/// <param name="xPath">XPath表达式,
/// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem"
/// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点.
/// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性.
/// </param>
/// <param name="attributeName">属性名</param>
public static string GetAttributeValue(string xmlFilePath, string xPath, string attributeName)
{
//创建根对象
XmlElement rootElement = CreateRootElement(xmlFilePath);
//返回XPath节点的属性值
return rootElement.SelectSingleNode(xPath).Attributes[attributeName].Value;
}
#endregion
#endregion
}
}
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