Engine.Razor.Run导致InvalidCastException异常
我有以下代码来获取我的cshtml电子邮件模板Engine.Razor.Run导致InvalidCastException异常,razor,razorengine,Razor,Razorengine,我有以下代码来获取我的cshtml电子邮件模板 try { var layoutTemplateKey = new NameOnlyTemplateKey("layout", ResolveType.Global, null); if (!Engine.Razor.IsTemplateCached(layoutTemplateKey, null)) Engine.Razor.AddTempl
try
{
var layoutTemplateKey = new NameOnlyTemplateKey("layout", ResolveType.Global, null);
if (!Engine.Razor.IsTemplateCached(layoutTemplateKey, null))
Engine.Razor.AddTemplate(layoutTemplateKey, ReadTemplateFile("/Views/Email/Layout.cshtml"));
var templateKey = new NameOnlyTemplateKey(templatePath, ResolveType.Global, null);
if (!Engine.Razor.IsTemplateCached(templateKey, viewModel.GetType()))
{
Engine.Razor.AddTemplate(templateKey, ReadTemplateFile(templatePath));
Engine.Razor.Compile(templateKey, viewModel.GetType());
}
return viewModel == null ?
Engine.Razor.Run(templateKey) :
Engine.Razor.Run(templateKey, viewModel.GetType(), viewModel);
}
catch (Exception ex)
{
return ex.Message;
}
但是,我的Engine.Razor.Run会对此处引用的型号造成InvalidCastException
任何其他车型也会持续出现这种情况
我最近所做的更改是通过另一个模型继承这个类中的每个类,该模型将在Layout.cshtml
中使用
预期型号:NewBookRecievedEmailViewModel
public class NewBookRecievedEmailViewModel : EmailHelperModel
{
public ProposalPostedEmailViewModel()
{
this.canBeDeleted = true;
}
public string BookName { get; set; }
public string Author {get; set;}
}
获取模型PayOutBookEmailViewModel的错误
public class PayOutBookEmailViewModel : EmailHelperModel
{
public string BookID { get; set; }
public string BookUrl {get; set;}
}
继承的模型是:EmailHelper
public class EmailHelperModel
{
public bool canBeDeleted { get; set; }
public string DeleteUrl { get; set; }
}
堆栈跟踪:
at RazorEngine.Templating.TemplateBase`1.SetModel(Object model)
at RazorEngine.Templating.TemplateBase.SetData(Object model, DynamicViewBag viewbag)
at RazorEngine.Templating.RazorEngineCore.CreateTemplate(ICompiledTemplate template, Object model, DynamicViewBag viewbag)
at RazorEngine.Templating.RazorEngineCoreWithCache.ResolveInternal(String cacheName, Object model, Type modelType, DynamicViewBag viewbag, ResolveType resolveType, ITemplateKey context)
at RazorEngine.Templating.InternalTemplateService.Resolve(String name, Object model, Type modelType, DynamicViewBag viewbag, ResolveType resolveType)
at RazorEngine.Templating.TemplateBase`1.ResolveLayout(String name)
at RazorEngine.Templating.TemplateBase.RazorEngine.Templating.ITemplate.Run(ExecuteContext context, TextWriter reader)
at RazorEngine.Templating.RazorEngineCore.RunTemplate(ICompiledTemplate template, TextWriter writer, Object model, DynamicViewBag viewBag)
at RazorEngine.Templating.RazorEngineService.Run(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
at RazorEngine.Templating.DynamicWrapperService.Run(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
at RazorEngine.Templating.RazorEngineServiceExtensions.<>c__DisplayClass22_0.<Run>b__0(TextWriter writer)
at RazorEngine.Templating.RazorEngineServiceExtensions.WithWriter(Action`1 withWriter)
at RazorEngine.Templating.RazorEngineServiceExtensions.Run(IRazorEngineService service, ITemplateKey key, Type modelType, Object model, DynamicViewBag viewBag)
at Pxp.Api.Helpers.EmailHelper.GetHtmlContent(String templatePath, Object viewModel)
at RazorEngine.Templating.TemplateBase`1.SetModel(对象模型)
位于RazorEngine.Templating.TemplateBase.SetData(对象模型,DynamicViewBag视图包)
位于RazorEngine.Templating.RazorEngineCore.CreateTemplate(ICompiledTemplate模板、对象模型、DynamicViewBag视图包)
位于RazorEngine.Templating.RazorEngineCoreWithCache.ResolveInternal(字符串缓存名称、对象模型、类型modelType、DynamicViewBag视图包、ResolveType ResolveType、ITemplateKey上下文)
位于RazorEngine.Templating.InternalTemplateService.Resolve(字符串名称、对象模型、类型modelType、DynamicViewBag视图包、ResolveType ResolveType)
在RazorEngine.Templating.TemplateBase`1.ResolveLayout(字符串名)
在RazorEngine.Templating.TemplateBase.RazorEngine.Templating.ITemplate.Run(ExecuteContext上下文,TextWriter阅读器)
位于RazorEngine.Templating.RazorEngineCore.RunTemplate(ICompiledTemplate模板、TextWriter编写器、对象模型、DynamicViewBag视图包)
在RazorEngine.Templating.RazorEngineService.Run(ITemplateKey键、TextWriter编写器、类型modelType、对象模型、DynamicView视图包)
在RazorEngine.Templating.DynamicWrapperService.Run(ITemplateKey、TextWriter编写器、类型modelType、对象模型、DynamicViewBag视图包)
在RazorEngine.Templating.RazorEngineServiceExtensions.c_uu显示类22_0.b_u0(TextWriter)
在RazorEngine.Templating.RazorEngineServiceExtensions.WithWriter处(操作'1 WithWriter)
在RazorEngine.Templating.RazorEngineServiceExtensions.Run(IRazorEngineService,ITemplateKey键,Type modelType,Object model,DynamicViewBag viewBag)
位于Pxp.Api.Helpers.EmailHelper.GetHtmlContent(字符串模板路径,对象视图模型)
> p>而不是使用CSHTML,考虑使用实际HTML;或者更好的是,使用JavaScript生成元素,这是真正的方法,下面是一些如何在JavaScript中创建元素的示例代码:
var MyEngine = new (function() {
this.el = function(opts) {
if(!svgList.split(" ").find(x => x == opts.tag)) {
this.node = document.createElement(opts.tag || "div");
} else {
this.node = document.createElementNS('http://www.w3.org/2000/svg', opts.tag);
}
for(var k in opts) {
if(k == "style") {
for(var s in opts[k]) {
this.node.style[s] = opts[k][s];
}
} else if(k != "parent"){
this.node[k] = opts[k];
}
}
this.setAttrs = (attrs) => {
for(var k in attrs) {
this.node.setAttribute(k, attrs[k]);
}
};
this.getAttr = (at) => {
return this.node.getAttribute(at);
};
this.setStyle = (stl) => {
for(var k in stl) {
this.node.style[k] = stl[k];
}
}
var attr = opts.attr || {};
this.setAttrs(attr);
var optsPar = opts.parent;
var par = null;
if(optsPar) {
if(optsPar.constructor == String) {
par = f("#" + optsPar);
} else if(optsPar instanceof Element) {
par = optsPar;
}
}
this.parent = par || document.body || {appendChild: (d) => {}};
this.parent.appendChild(this.node);
};
)();
然后,要创建新元素,请执行以下操作:
var temp = new MyEngine.el({
id:"hi",
style:{position:absolute, left:100+"px"},
innerHTML:"<b>nice to meet you</b>
});
var temp=new MyEngine.el({
id:“你好”,
样式:{位置:绝对,左:100+“px”},
innerHTML:“很高兴认识你
});
顺便说一句,这是一个很好的建议。