C# 如何用正确的方法将字节数组转换成FormFile?
此示例从html创建pdf字节数组。我想在电子邮件附件中添加一些文件。如何以正确的方式将字节数组转换为FormFile?C# 如何用正确的方法将字节数组转换成FormFile?,c#,email,pdf,iformfile,C#,Email,Pdf,Iformfile,此示例从html创建pdf字节数组。我想在电子邮件附件中添加一些文件。如何以正确的方式将字节数组转换为FormFile? 这是我的密码: public async Task<byte[]> ShowPdfByInstructionId(int id) { InstructionTemplateDTO template = new InstructionTemplateDTO(); template
这是我的密码:
public async Task<byte[]> ShowPdfByInstructionId(int id)
{
InstructionTemplateDTO template = new InstructionTemplateDTO();
template = GetInstructionTemplate(id);
var actionPdf = new Rotativa.AspNetCore.ViewAsPdf("InstructionPdf", template )
{
FileName = template.number + ".pdf",
PageSize = Rotativa.AspNetCore.Options.Size.A4,
PageOrientation = Rotativa.AspNetCore.Options.Orientation.Portrait,
PageHeight = 20,
};
var pdfData = await actionPdf.BuildFile(this.ControllerContext);
return pdfData;
}
private async Task<ActionResult> SendMail( instructions instruction)
{
MailRequest mailRequest = new MailRequest();
try
{
mailRequest.ToEmail = partner_contact.mail;
mailRequest.Body = "This is a body of message";
var pdfData = ShowPdfByInstructionId(instruction.id).Result;
using (var ms = new MemoryStream(pdfData))
{
ms.Seek(0, SeekOrigin.Begin);
var formFile = new FormFile(ms, 0, ms.Length, null, instruction.id.ToString() + ".pdf")
{
Headers = new HeaderDictionary(),
ContentType = "application/pdf"
};
mailRequest.Attachments.Add(formFile);//System.NullReferenceException: "Object reference not set to an instance of an object."-MailRequest.Attachments.get return null.
await _publishEndpoint.Publish<MailRequest>(mailRequest);
}
return Ok();
}
public异步任务ShowPdfByInstructionId(int-id)
{
InstructionTemplateDTO template=新建InstructionTemplateDTO();
模板=GetInstructionTemplate(id);
var actionPdf=new Rotativa.AspNetCore.ViewAsPdf(“说明PDF”,模板)
{
FileName=template.number+“.pdf”,
PageSize=Rotativa.AspNetCore.Options.Size.A4,
PageOrientation=Rotativa.AspNetCore.Options.Orientation.Portrait,
页面高度=20,
};
var pdfData=await actionPdf.BuildFile(this.ControllerContext);
返回pdfData;
}
专用异步任务SendMail(说明)
{
MailRequest MailRequest=新的MailRequest();
尝试
{
mailRequest.ToEmail=合作伙伴\联系人.mail;
mailRequest.Body=“这是一个消息体”;
var pdfData=ShowPdfByInstructionId(instruction.id).Result;
使用(var ms=新内存流(pdfData))
{
Seek女士(0,SeekOrigin.Begin);
var formFile=new formFile(ms,0,ms.Length,null,指令.id.ToString()+“.pdf”)
{
Headers=新的HeaderDictionary(),
ContentType=“应用程序/pdf”
};
mailRequest.Attachments.Add(formFile);//System.NullReferenceException:“对象引用未设置为对象的实例。”-mailRequest.Attachments.get返回null。
等待发布点发布(mailRequest);
}
返回Ok();
}
这是否回答了您的问题?NullReferenceException
与FormFile
无关问题在MailRequest模型中。