小编KMR*_*KMR的帖子

我很困惑，我可以从微调器中选择一个项目，然后在弹出的消息中显示它。我有这个，

btnSubmitRequest.Click += (sender, e) =>
        {
            spinnerJobTypes.ItemSelected += new EventHandler<AdapterView.ItemSelectedEventArgs>(spinnerJobTypes_ItemSelected);
        }


private void spinnerJobTypes_ItemSelected(object sender, AdapterView.ItemSelectedEventArgs e)
    {
        Spinner spinner = (Spinner)sender;

        string toast = string.Format("{0}", spinner.GetItemAtPosition(e.Position));
        Toast.MakeText(this, toast, ToastLength.Long).Show();
    }

如何获得SpinnerJobTypes_ItemSelected对字符串的响应，以便可以将其提交到数据库中？

任何帮助是极大的赞赏

我正在尝试从 ac# 应用程序读取 xml 文件。到目前为止，根本没有运气。这是 XML 文件

<?xml version="1.0" encoding="utf-8"?>
<ExportJobs xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <JobList>
    <Job Id="555555">
      <Comments></Comments>
      <DueDate>2017-11-17</DueDate>
      <FormattedDueDate>17-Nov-2017 12:00</FormattedDueDate>
      <TargetDueDate>2017-11-17</TargetDueDate>
      <ServiceTypeId>3</ServiceTypeId>
      <ServiceType>Service</ServiceType>
      <TenantName>Miss Ash</TenantName>
      <Uprn>testUpr</Uprn>
      <HouseName></HouseName>
    </Job>
    <Job Id="666666">
      <Comments></Comments>
      <DueDate>2018-03-15</DueDate>
      <FormattedDueDate>15-Mar-2018 12:00</FormattedDueDate>
      <TargetDueDate>2018-03-15</TargetDueDate>
      <ServiceTypeId>3</ServiceTypeId>
      <ServiceType>Service</ServiceType>
      <TenantName>Mr Howard</TenantName>
      <Uprn>testUpr2</Uprn>
    </Job>
  </JobList>
</ExportJobs>

我正在尝试从作业列表节点获取作业 ID和 Uprn，并将值传递给 Sql Server DB。我试过这个，但我无法得到值，

            string costCode;
            string uprn;

            //File path where the xml is located
            string filepath = "C:\\ExportJobs.xml";

            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(filepath);

            foreach (XmlNode node in …

我正在尝试在我的 React 项目中实现 SignaturePad，并且我可以绘制签名，但我无法访问属性以清除或保存它。我在 ref={signCanvas} 以及 current.clear() 和 signCanvas.current.clear() 和 signCanvas.getTrimmedCanvas().toDataURL("image/png") 上收到以下错误

没有重载与此调用匹配。

  Overload 1 of 2, '(props: Readonly<ReactSignatureCanvasProps>): ReactSignatureCanvas', gave the following error.
    Type 'MutableRefObject<{}>' is not assignable to type 'string | ((instance: ReactSignatureCanvas | null) => void) | RefObject<ReactSignatureCanvas> | null | undefined'.
      Type 'MutableRefObject<{}>' is not assignable to type 'RefObject<ReactSignatureCanvas>'.
        Types of property 'current' are incompatible.
          Type '{}' is missing the following properties from type 'ReactSignatureCanvas': on, off, clear, isEmpty, and 14 more.
  Overload 2 of 2, …