我的 WebImage.GetImageFromRequest
返回 null,即使存在文件也是如此。怎么会这样?
cshtml代码:
@{
if(IsPost)
{
if(Request["upload"] != null)
{
image = WebImage.GetImageFromRequest();
if(image != null)
{
// something
}
}
if(Request["btn"] != null)
{
// something
}
}
}
<form action="" method="post">
<table>
<tr>
<td>
<p>
Upload image:
</p>
</td>
<td>
<input type="file" name="img" />
<br/>
<input type="submit" name="upload" value="Upload" />
</td>
</tr>
</table>
<input type="submit" name="btn" value="update" />
</form>
最佳答案
尝试使用这种替代方法(因为存在一些错误):
public static WebImage GetImageFromRequest() {
var request = HttpContext.Current.Request;
if (request.Files.Length == 0) {
return null;
}
try {
var postedFile = request.Files[0];
var image = new WebImage(postedFile.InputStream) {
FileName = postedFile.FileName
};
return image;
} catch {
// The user uploaded a file that wasn't an image or an image format that we don't understand
return null;
}
}
来自 here
关于c# - 当文件存在时,WebImage.GetImageFromRequest 返回 null,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/16593366/