Extjs+C# 文件上传

var ImportPanel = new Ext.form.FormPanel({
        baseCls: 'x-plain',
        frame: false,

　　　// 注意formPanel里面的fileUpload一定要打开
        fileUpload: true,
        id: 'ImportPanel',
        url: 'Excel.aspx?ac=Import',
        items: [{
            xtype: 'textfield',

　　　　// 注意要有以下字段
            inputType: 'file',
            fieldLabel: '请选择导入文件',
            id: 'stationFile',
            150,
            allowBlank: false
        }]
    });
var ImportWinFrom = new Ext.Window({
    layout: 'fit',
    360,
    height: 100,
    closeAction: 'hide',
    title:'导入数据',
    plain: true,
    items: ImportPanel,
    buttons: [{
        text: '提交',
        formPanel:this.ImportPanel,
        handler: function() {
            this.formPanel.form.submit({
                success: function(form, action) {
                    Ext.Msg.alert("导入成功", action.result.msg);
                    mportWinFrom.hide();
                },
                scope: this,
                failure: function(form, action) {
                    Ext.Msg.alert("导入失败", action.result.msg);
                    this.parent.SuperSearchWinForm.hide();
                }
            });
        }
    }, {
        text: '取消',
        handler: function() {
            ImportWinFrom.hide();
        }
    }]
});

C# 代码

public void UploadFile()

{

　　　// 接收Http发送过来的文件

   　　HttpFileCollection files = HttpContext.Current.Request.Files;
         HttpPostedFile postedFile = files[0];
         Hashtable hash = new Hashtable();
         JavaScriptSerializer adapter = new JavaScriptSerializer();
            
         string url = "uploadfile/excel/" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xlsx";
         try
         {
             postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath(url));
         }
         catch
         {
             hash.Add("success",false);
             hash.Add("msg", "上传附件失败!");
             MyResponse(hash);
         }

}