C# 使用多部分/表单数据上传文件
我用这个代码上传了一个文件,但它没有上传C# 使用多部分/表单数据上传文件,c#,asp.net,.net,C#,Asp.net,.net,我用这个代码上传了一个文件,但它没有上传 var content = new MultipartFormDataContent(); var fileContent = new ByteArrayContent(System.IO.File.ReadAllBytes(filePath)); fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment") {
var content = new MultipartFormDataContent();
var fileContent = new ByteArrayContent(System.IO.File.ReadAllBytes(filePath));
fileContent.Headers.ContentDisposition =
new ContentDispositionHeaderValue("attachment")
{
FileName = Path.GetFileName(filePath)
};
content.Add(fileContent);
var responce = client.PostAsync(queryString.ToString(), content).Result;
试试这个
<form id="form1" runat="server">
<asp:FileUpload id="FileUploadControl" runat="server" />
<asp:Button runat="server" id="UploadButton" text="Upload" onclick="UploadButton_Click" /> <br /><br />
<asp:Label runat="server" id="StatusLabel" text="Upload status: " />
</form>
protected void UploadButton_Click(object sender, EventArgs e)
{
if(FileUploadControl.HasFile)
{
try
{
string filename = Path.GetFileName(FileUploadControl.FileName);
FileUploadControl.SaveAs(Server.MapPath("~/") + filename);
StatusLabel.Text = "Upload status: File uploaded!";
}
catch(Exception ex)
{
StatusLabel.Text = "Upload status: The file could not be uploaded. The following error occured: " + ex.Message;
}
}
}
受保护的无效上载按钮\u单击(对象发送者,事件参数e)
{
if(FileUploadControl.HasFile)
{
尝试
{
字符串filename=Path.GetFileName(FileUploadControl.filename);
FileUploadControl.SaveAs(Server.MapPath(“~/”)+文件名);
StatusLabel.Text=“上载状态:文件已上载!”;
}
捕获(例外情况除外)
{
StatusLabel.Text=“上载状态:无法上载文件。出现以下错误:“+ex.Message;
}
}
}
状态消息应该清楚地表明它们都是关于什么的,并且您可以更改它们以满足您的需要 试试这段代码。它工作正常。只需在解决方案资源管理器中创建一个名为“Upload”的文件夹,即可上载文件 在您的aspx页面中
<asp:FileUpload runat="server" ID="FileUploadContacts" Width="300px" />
<asp:Button runat="server" ID="btnUpload" Text="Upload" OnClick="btnUpload_OnClick" />
您遇到了什么错误?不上传是什么意思?客户端是否没有收到帖子,或者内容是否为空/空?它适用于所有类型的文件。但是您可以通过添加一个条件来修改它,只允许上传特定类型的文件。
protected void btnUpload_OnClick(object sender, EventArgs e)
{
try
{
if (FileUploadContacts.HasFile)
{
FileUploadContacts.SaveAs(Server.MapPath("Uploads//") + FileUploadContacts.FileName);
this.lblMessage.Text = "File uploaded Successfully!>";
}
else
{
this.lblMessage.Text = "File not uploaded!>";
}
}
catch (Exception ex)
{
Logger.WriteException(ex);
}
}