我尝试使用 Blazor（服务器端）创建一个项目并将视图创建为 .razor，我还添加了控制器。如何将数据从控制器传递到视图 .razor ？
我想我可以在控制器中创建一个公共变量，即交互控制器和.razor。但我不知道代码
I want get var u to the view
//Controller
[HttpPost("[action]")]
public void Save(IList<IFormFile> UploadFiles)
{
var u = UploadFiles.FirstOrDefault().FileName;
long size = 0;
size = SaveUploadedFiles(UploadFiles, size);
}
//View
<EjsUploader ID="UploadFiles">
<UploaderAsyncSettings SaveUrl="api/Save" RemoveUrl="api/Remove"></UploaderAsyncSettings>
</EjsUploader>
同步融合支持在这里。
您可以使用“Headers”或“ReasonPhrase”将数据从控制器传递到成功事件中的视图，如下面的代码示例中所述。
[示例数据控制器.cs]
public void Save(IList<IFormFile> UploadFiles)
{
long size = 0;
try
{
foreach (var file in UploadFiles)
{
var filename = ContentDispositionHeaderValue
.Parse(file.ContentDisposition)
.FileName
.Trim('"');
filename = hostingEnv.ContentRootPath.Replace("WebApplication6.Server", "WebApplication6.Client") + $@"\{filename}";
size += (int)file.Length;
if (!System.IO.File.Exists(filename))
{
using (FileStream fs = System.IO.File.Create(filename))
{
file.CopyTo(fs);
fs.Flush();
}
}
}
Response.Headers.Add("custom-header", "Syncfusion");
Response.HttpContext.Features.Get<IHttpResponseFeature>().ReasonPhrase = "Syncfusion Upload";
}
catch (Exception e)
{
Response.Clear();
Response.StatusCode = 204;
Response.HttpContext.Features.Get<IHttpResponseFeature>().ReasonPhrase = "File failed to upload";
Response.HttpContext.Features.Get<IHttpResponseFeature>().ReasonPhrase = e.Message;
}
}
[索引.剃刀]
@using Newtonsoft.Json;
@using Newtonsoft.Json.Converters;
<EjsUploader Id="UploadFiles" AutoUpload="true" Success="@OnSuccess">
<UploaderAsyncSettings SaveUrl="api/SampleData/Save" RemoveUrl="api/SampleData/Remove"></UploaderAsyncSettings>
</EjsUploader>
<p>Additional Header Text is: @HeaderData</p>
<p>Additional Response Data is: @ResponseData</p>
@code{
public string HeaderData;
public string ResponseData;
public void OnSuccess(object args)
{
SuccessEventArgs eventArgs = JsonConvert.DeserializeObject<SuccessEventArgs>(args.ToString());
HeaderData = eventArgs.Response.Headers;
ResponseData = eventArgs.Response.StatusText;
this.StateHasChanged();
}
//Success event args class.
public class SuccessEventArgs
{
public object E { get; set; }
public FileInfo File { get; set; }
public string StatusText { get; set; }
public string Name { get; set; }
public string Operation { get; set; }
public ResponseEventArgs Response { get; set; }
}
public class ResponseEventArgs
{
public string Headers { get; set; }
public object ReadyState { get; set; }
public object StatusCode { get; set; }
public string StatusText { get; set; }
public bool withCredentials { get; set; }
}
}
And, you need to enable the allow header option in the Startup.cs file as mentioned in the below code example.
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc().AddNewtonsoftJson();
services.AddResponseCompression(opts =>
{
opts.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(
new[] { "application/octet-stream" });
});
services.AddCors(options =>
{
options.AddPolicy("EnableCORS", builder =>
{
builder.AllowAnyOrigin().AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod().AllowCredentials().Build();
});
});
}
我们准备了样品并附在下面。
此外，目前我们正在努力为成功事件参数提供特定类型，此支持将包含在我们计划于 2019 年 8 月中旬发布的补丁中。感谢您在此之前的耐心等待。
您可以通过以下反馈链接跟踪问题的状态。