我正在使用配备 M1 CPU 的 MacBook Pro,因此无法使用“普通”mssql docker 映像。我使用的 azure-sql-edge 没有 sqlcmd 来初始化数据库(创建架构、数据库、登录)。
我创建了一个 sql 脚本,我想在容器启动后运行该脚本,但我找不到 sqlcmd 的任何替代方案。
还有其他方法吗?
我正在尝试从已有配对代码和通信协议的医疗 BT 设备获取数据。
寻找一些代码我得到了这个代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using InTheHand.Net.Sockets;
using InTheHand.Net;
using InTheHand.Net.Bluetooth;
using InTheHand.Windows.Forms;
using System.Net.Sockets;
using System.Diagnostics;
using System.Threading;
namespace dConsoleApp
{
static class Program
{
// My BT USB adapter
private static BluetoothEndPoint EP = new BluetoothEndPoint(BluetoothAddress.Parse("00:02:72:CD:9A:33"), BluetoothService.BluetoothBase);
private static BluetoothClient BC = new BluetoothClient(EP);
// The BT device that would connect
private static BluetoothDeviceInfo BTDevice = new BluetoothDeviceInfo(BluetoothAddress.Parse("94:21:97:60:07:C0"));
private static NetworkStream stream = null;
static void Main(string[] args)
{
if (BluetoothSecurity.PairRequest(BTDevice.DeviceAddress, …Run Code Online (Sandbox Code Playgroud) 我正在构建一个页面来上传服务器上的Excel文件以进行导入操作.所以一个javascript检查文件选中文件扩展名void其他文件类型.现在我正在尝试启用上传ASP.NET按钮,但javascript返回错误document.getElementById(...)为null.
这里的代码:
<script type="text/javascript" language="javascript" defer="defer">
function enableControl() {
document.getElementById('button').disable = false;
}
function disableControl() {
document.getElementById('button').disable = true;
}
function checkExcelFileUpload(elem) {
var filePath = elem.value;
if (filePath.indexOf('.') == -1)
return false;
var validExtensions = new Array();
var ext = filePath.substring(filePath.lastIndexOf('.') + 1).toLowerCase();
//Add valid extentions in this array
validExtensions[0] = 'xls';
//validExtensions[1] = 'pdf';
for (var i = 0; i < validExtensions.length; i++) {
if (ext == validExtensions[i])
return true;
}
elem.value = '';
alert('Sono ammessi …Run Code Online (Sandbox Code Playgroud) 我正在尝试在MVC 5项目中显示带有标记和圆圈的地图.地图显示标记,但在圆圈方法a上获取错误setRadius:不是数字.
这里的代码:
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
$(document).ready(function () {
initialize();
});
function initialize() {
var myLat = '@Model.Lat'.replace(',', '.').replace(' ', '');
var myLong = '@Model.Lon'.replace(',', '.').replace(' ', '');
var rad = '@Model.Acc'.replace(',', '.').replace(' ', '');
var center = new google.maps.LatLng(myLat, myLong); // LatLng of center point of circle
var mapOptions = {
center: center,
zoom: 16,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
mapOptions);
// create a marker
var marker = new google.maps.Marker({
position: center,
map: map, …Run Code Online (Sandbox Code Playgroud) 我正在尝试使用Angular ReactiveForms生成动态表单.目前我收到错误Cannot find control with path 'myFormArray -> [index] -> myProperty.我已经检查了一些在互联网上找到的答案但没有成功.这是我的代码:
HTML:
<form [formGroup]="myForm">
<div formArrayName="myFormArray" *ngFor="let ctrl of foo.controls; let i=index">
<div [formGroupName]="i">
<input matInput type="text" formControlName="myProperty">
</div>
</div>
</form>
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TS:
export class MyClass implements OnChanges {
@Input() myData: any;
myForm: FormGroup;
get foo(): FormArray{
return <FormArray>this.myForm.get('myFormArray');
}
constructor(private fb: FormBuilder) { }
ngOnChanges() {
if (!this.myForm) {
this.myForm = this.fb.group({
myFormArray: this.fb.array([this.buildMyFormArray()])
});
}
this.myForm.setControl('myFormArray', this.fb.array(myData || []));
}
buildMyFormArray(): FormGroup {
return this.fb.group({
myProperty: '' …Run Code Online (Sandbox Code Playgroud) 这是我与Json的第一次合作.我已经在我的Visual Studio项目中安装了Json.Net并用于反序列化一些简单的字符串,如下所示:
{
"A":"1",
"B":"2",
"C":"3"
}
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使用此代码:
JToken token = JObject.Parse("{ "A":"1","B":"2","C":"3"}";
string aValue = token.SelectToken("A");
string aValue = token.SelectToken("B");
string aValue = token.SelectToken("C");
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但我不知道如何处理像这样的Json:
{
"LIST":[
{
"A":"value1",
"B":"value1",
"C":"value1"
}
{
"A":"value2",
"B":"value2",
"C":"value2"
}
{
"A":"value3",
"B":"value3",
"C":"value3"
}
],
"D":"value4",
"E":"value5",
"F":"value6"
}
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如何获得所有类型的元素和其他变量,如D,E和F?
谢谢
我正在使用 Xamarin.Forms 开发跨平台移动应用程序。
我正在尝试使用简单的活动指示器和 I 按钮来模拟 Web 服务上的 POST。我希望单击按钮时活动指示器会显示并保持不变,直到 IsLoading 属性设置为 false。
这是我的 XAML:
<AbsoluteLayout x:Name="layOuter">
<ActivityIndicator x:Name="actWebRequest"
IsVisible="{ Binding IsLoading,
Mode=TwoWay }"
IsRunning="{ Binding IsLoading,
Mode=TwoWay }"
AbsoluteLayout.LayoutBounds="0.5, 0.5, 100, 100"
AbsoluteLayout.LayoutFlags="PositionProportional" />
<Button x:Name="btnLogin"
IsVisible="{ Binding Show,
Mode=TwoWay }"
Text="{ StaticResource LoginButtonText }"
Command="{ Binding LoginCommand }"
BackgroundColor="Teal" />
</AbsoluteLayout>
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他的登录命令:
公共事件 PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
protected void SetValue<T>(ref T backingField, T value, [CallerMemberName] string propertyName = null) …Run Code Online (Sandbox Code Playgroud)