完整版 RazorHelper.cs
using System; using System.Collections; using System.Collections.Generic; using System.IO; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; using System.Web; using RazorEngine; using RazorEngine.Text; namespace Console_Core.Common { public class RazorHelper { /// <summary> /// Razor解析cshtml页面，并输出到浏览器 /// </summary> /// <param name="context">上下文</param> /// <param name="cshtmlVirtualPath">cshtml页面的虚拟路径</param> /// <param name="data">传递的虚拟实例</param> public static void RazorParse(HttpContext context, string cshtmlVirtualPath, object data) { string fullPath = context.Server.MapPath(cshtmlVirtualPath); string cshtml = File.ReadAllText(fullPath); string cacheName = fullPath + File.GetLastWriteTime(fullPath); string html = Razor.Parse(cshtml, data, cacheName); context.Response.Write(html); } /// <summary> /// 对html进行加密 /// </summary> /// <param name="htmlStr">html标签</param> /// <returns>加密之后的字符串</returns> public static HtmlEncodedString HtmlEncodedString(string htmlStr) { return new HtmlEncodedString(htmlStr); } /// <summary> /// 对html原样显示 /// </summary> /// <param name="htmlStr">html标签</param> /// <returns>html原来样子</returns> public static RawString RawString(string htmlStr) { return new RawString(htmlStr); } /// <summary> /// 拼接生成CheckBox 标签 /// </summary> /// <param name="isCheck">是否选中</param> /// <param name="extendProperties">扩展属性的对象：比如，new {id='managerId',name='manager',style='color:red' }</param> /// <returns>CheckBox标签</returns> public static RawString CheckBox(bool isCheck, object extendProperties) { StringBuilder sb = new StringBuilder(); sb.Append("<input type='checkbox' "); sb.Append(RenderExtProperties(extendProperties)); if(isCheck) { sb.Append(" checked "); } sb.AppendLine(" />"); return new RawString(sb.ToString()); } /// <summary> /// 拼接扩展属性 及对应的值 /// </summary> /// <param name="extendProperties">扩展属性 所在的匿名实例</param> /// <returns>拼接生成的 包含属性名和值 的字符串： 比如，“ name='manager' id='managerId' ” </returns> private static string RenderExtProperties(object extendProperties) { StringBuilder sb = new StringBuilder(); #region 拼接扩展属性 Type extType = extendProperties.GetType(); PropertyInfo[] props = extType.GetProperties(); foreach (PropertyInfo prop in props) { string extPropName = prop.Name; object extPropValue = prop.GetValue(extendProperties); sb.Append(" ").Append(extPropName).Append("='").Append(extPropValue).Append("' "); } #endregion return sb.ToString(); } /// <summary> /// 拼接生成DropDownList下拉列表 标签 /// </summary> /// <param name="list">实例的集合</param> /// <param name="valuePropName">实际的值属性的名称：比如，Id</param> /// <param name="textPropName">显示的文本属性的名称：比如，Name</param> /// <param name="selectedValue">选中的值</param> /// <param name="extendProperties">扩展属性的对象：比如，new {id='managerId',name='manager',style='color:red' }</param> /// <returns>DropDownList下拉列表 标签</returns> public static RawString DropDownList(IEnumerable list,string valuePropName,string textPropName,object selectedValue,object extendProperties) { //<select name='' id='' > //<option value=''> </option> //</select> StringBuilder sb = new StringBuilder(); sb.Append("<select "); #region 拼接扩展属性 sb.Append(RenderExtProperties(extendProperties)); #endregion sb.AppendLine(" >"); #region 拼接下拉选项 foreach (object item in list) { object valuePropValue, textPropValue; GetvalueAndTextPropValue(item, valuePropName, textPropName, out valuePropValue, out textPropValue); sb.Append("<option value='").Append(valuePropValue).Append("' "); if(object.Equals(valuePropValue,selectedValue)) //如果当前值与选中的值相等，则selected （引用类型用equal，如果用=则是不同的实例，因为发生过装箱） { sb.Append(" selected "); } sb.Append(">").Append(textPropValue).AppendLine(" </option> "); } #endregion sb.AppendLine("</select>"); return new RawString(sb.ToString()); } /// <summary> /// 拼接生成RadioButtonList 标签 /// </summary> /// <param name="list">实例的集合</param> /// <param name="valuePropName">实际的值属性的名称：比如，Id</param> /// <param name="textPropName">显示的文本属性的名称：比如，Name</param> /// <param name="selectedValue">选中的值</param> // <param name="extendProperties">扩展属性的对象：比如，new {name='gender',style='color:red' }</param> /// <returns>RadioButtonList 标签</returns> public static RawString RadioButtonList(IEnumerable list, string valuePropName, string textPropName, object selectedValue, object extendProperties) { //<input type="radio" name="gender" value="1" checked /><label>男</label><br /> //只能单选 StringBuilder sb = new StringBuilder(); foreach(object item in list) { object valuePropValue, textPropValue; GetvalueAndTextPropValue(item, valuePropName, textPropName, out valuePropValue, out textPropValue); sb.Append("<input type="radio" "); sb.Append(RenderExtProperties(extendProperties)); sb.Append(" value="").Append(valuePropValue).Append("""); if(object.Equals(valuePropValue,selectedValue)) { sb.Append(" checked "); } sb.Append(" /><label>").Append(textPropValue).AppendLine("</label><br />"); } return new RawString(sb.ToString()); } /// <summary> /// 拼接生成CheckBoxList 标签 /// </summary> /// <param name="list">实例的集合</param> /// <param name="valuePropName">实际的值属性的名称：比如，Id</param> /// <param name="textPropName">显示的文本属性的名称：比如，Name</param> /// <param name="selectedValues">选中的值的数组</param> /// <param name="extendProperties">扩展属性的对象：比如，new {name='hobby',style='color:red' }</param> /// <returns>CheckBoxList 标签</returns> public static RawString CheckBoxList(IEnumerable list, string valuePropName, string textPropName, object[] selectedValues, object extendProperties) { //<input type="checkbox" name="hobby" value="1" checked /><label>足球</label><br /> //可多选 StringBuilder sb = new StringBuilder(); foreach(object item in list) { object valuePropValue,textPropValue; GetvalueAndTextPropValue(item, valuePropName, textPropName, out valuePropValue, out textPropValue); sb.Append("<input type="checkbox" "); sb.Append(RenderExtProperties(extendProperties)); sb.Append (" value="").Append(valuePropValue).Append("" "); if(selectedValues.Contains(valuePropValue)) { sb.Append(" checked "); } sb.Append(" /><label>").Append(textPropValue).AppendLine("</label><br />"); } return new RawString(sb.ToString()); } /// <summary> /// 根据指定实例的 值属性名和文本属性名 获得 值属性值和文本属性值 /// </summary> /// <param name="item">指定实例</param> /// <param name="valuePropName">值属性名</param> /// <param name="textPropName">文本属性名</param> /// <param name="valuePropValue">out 值属性值</param> /// <param name="textPropValue">out 文本属性值</param> private static void GetvalueAndTextPropValue(object item, string valuePropName, string textPropName, out object valuePropValue, out object textPropValue) { Type type = item.GetType(); PropertyInfo valueProp = type.GetProperty(valuePropName); valuePropValue = valueProp.GetValue(item); PropertyInfo textProp = type.GetProperty(textPropName); textPropValue = textProp.GetValue(item); } } }