Upload tips in Asp.net MVC

 

 

In the past two days, the Asp.net MVC project allows users to upload an image as their Avatar.

HtmlCode

<Form method = "Post" enctype = "multipart/form-Data" Action = "/home/uploadfile">

<Input type = "file" id = "uploadfile"/>

<Input type = "Submit" value = "save"/>

</Form>

Controller code

[Httppost]
 Public Actionresult Uploadfile(Httppostedfilebase File)
{
Return View();
}
 

 
Which file is always null.
 

 
On an English website, you can see:
 

 
The file upload control must have a name value, and the file in the httppostedfilebase file on the controller must be the name value of the upload control.
 

 
Add the following code:
 

<Form method = "Post" enctype = "multipart/form-Data" Action = "/home/uploadfile">
<Input type = "file" id = "uploadfile" name = "file"/>
<Input type = "Submit" value = "save"/>
</Form>
 

 
The Controller code will not be written. It is the same as above.
 

 
After tracking, file is no longer null.
 

 
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