我尝试上传多个文件(PDF或各种图片格式)。现在上传单个文件有效,但多个不起作用。
这是代码:
HTML:
private void btnUpdate_Click(object sender, EventArgs e)
{
int id = 0;
id = Convert.ToInt32(lblId.Text);
foreach (var dgr in gridViewCompanies.Rows)
{
if (dgr.Cells[0].Value.Equals(tbl.ID))
{
dgr.IsSelected = true;
dgr.Cells[0].IsSelected = true;GridTableElement tableElement = this.gridViewCompanies.CurrentView as GridTableElement;
tableElement.ScrollToRow(dgr.Index);
break;
}
}
}
脚本:
<div>
<label> Upload PDF(s) or Images (PNG/JPG/DICOM/DCM):</label>
<div class="ctrl">
<div class="icon">
<i class="fa fa-file-image-o"></i>
</div>
<input type="file" (change)="onChange($event)"/>
<md-input class="ctrl" [(ngModel)]="fileName"></md-input>
</div>
</div>
帮我看看如何上传多个文件。
答案 0 :(得分:10)
将multiple
属性添加到您的输入中:
<input type="file" (change)="onChange($event)" multiple />
要显示输入中的所有文件名,请在此插件中执行此操作:https://plnkr.co/edit/WvkNbwXpAkD14r417cYM?p=preview
import {Component, NgModule} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
@Component({
selector: 'my-app',
template: `
<div>
<h2>Hello {{name}}</h2>
<input type="file" multiple (change)="onChange($event, showFileNames)" />
<input #showFileNames />
</div>
`,
})
export class App {
constructor() {
this.name = 'Angular2'
}
onChange(event: any, input: any) {
let files = [].slice.call(event.target.files);
input.value = files.map(f => f.name).join(', ');
}
}
@NgModule({
imports: [ BrowserModule ],
declarations: [ App ],
bootstrap: [ App ]
})
export class AppModule {}
或者使用你的变量而不是直接将它放到那个输入上!
答案 1 :(得分:1)
你可以试试这对我有用;)
答案 2 :(得分:1)
初始化:
selectedFiles: File[];
文件选择事件:
onFileSelected(event) {
this.selectedFiles = event.target.files;
for (let i = 0; i < event.target.files; i++) {
this.selectedFiles.push(event.target.files[i]);
}
}
提交表单事件:
onSubmit() {
const formData = new FormData();
if (this.selectedFiles.length > 0) {
for (const row of this.selectedFiles) {
formData.append('document_files[]', row);
}
}
}
HTML文件输入:
<input
type="file"
id="documents"
multiple
formControlName="documents"
(change)="onFileSelected($event)"
accept="image/*,.pdf,.doc,.docx,.xml">