我正在尝试从使用 VB WPF 转移到使用 C# WPF,由于我拥有的代码量,到目前为止我尝试使用的是在线转换器。问题是我在理解一些出现的错误时遇到了一些麻烦,作为 C# 的初学者我有点迷茫。
下面的代码是我目前在标准 VB WPF 中使用的代码,并且工作得非常好,并且是 c# 转换器将其更改为的内容的副本。 (请注意,我已将 Bing Maps WPF 引用添加到 VB 和 C#)
Private Sub Aberdeen() Handles BTNCounty.Click
If TXTCounty.Text = "Aberdeen" Then
Dim CountyLocation(2) As Microsoft.Maps.MapControl.WPF.Location
CountyLocation(0) = New Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584)
CountyLocation(1) = New Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584)
CountyLocation(2) = New Microsoft.Maps.MapControl.WPF.Location(57.124838, -2.0991633)
Dim names = New String() {"Aberdeen Central", "Aberdeen Lochnagar", "Aberdeen Kincorth"}
For index = 0 To CountyLocation.Length - 1
Dim Pin = New Microsoft.Maps.MapControl.WPF.Pushpin()
Dim CoordinateTip = New ToolTip()
CoordinateTip.Content = names(index)
Pin.Location = CountyLocation(index)
Pin.ToolTip = CoordinateTip
BingMap.Children.Add(Pin)
Next
End If
End Sub
下面是代码转换成c#的例子
private void Aberdeen()
{
if (TXTCounty.Text == "Aberdeen") {
Microsoft.Maps.MapControl.WPF.Location[] CountyLocation = new Microsoft.Maps.MapControl.WPF.Location[3];
CountyLocation(0) = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation(1) = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation(2) = new Microsoft.Maps.MapControl.WPF.Location(57.124838, -2.0991633);
dynamic names = new string[] {
"Aberdeen Central",
"Aberdeen Lochnagar",
"\tAberdeen Kincorth"
};
for (index = 0; index <= CountyLocation.Length - 1; index++) {
dynamic Pin = new Microsoft.Maps.MapControl.WPF.Pushpin();
dynamic CoordinateTip = new ToolTip();
CoordinateTip.Content = names(index);
Pin.Location = CountyLocation(index);
Pin.ToolTip = CoordinateTip;
BingMap.Children.Add(Pin);
}
}
}
我收到 3 个错误,我想知道您能否告诉我它们的含义以及如何解决问题?
- CountyLocation 是一个变量,但像方法一样使用?
2 名称索引在当前上下文中不存在?
3 System.Windows.FrameworkElement.ToolTip 是一个属性,但像类型一样使用?
任何帮助将不胜感激,因为这对我来说非常陌生。
最佳答案
请查看内联答案。
主要问题是转换器已将您所有的类型推断调用 (Dim variable = ...
) 转换为动态,这是不正确的。您应该使用 var
进行类型推断。
private void Aberdeen()
{
if (TXTCounty.Text == "Aberdeen") {
Microsoft.Maps.MapControl.WPF.Location[] CountyLocation = new Microsoft.Maps.MapControl.WPF.Location[3];
// Error 1: Setting array variables is done using square brackets, otherwise it's considered a method invocation
CountyLocation[0] = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation[1] = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation[2] = new Microsoft.Maps.MapControl.WPF.Location(57.124838, -2.0991633);
// extra: you don't need dynamic here, just var will do
var names = new string[] {
"Aberdeen Central",
"Aberdeen Lochnagar",
"\tAberdeen Kincorth"
};
// Error 2: you need to declare the index variable (added var)
for (var index = 0; index <= CountyLocation.Length - 1; index++) {
// Error 3: don't need dynamic here
var Pin = new Microsoft.Maps.MapControl.WPF.Pushpin();
// don't need dynamic here
var CoordinateTip = new ToolTip();
// Same as error 1: Array access is done with square brackets
CoordinateTip.Content = names[index];
// Same as error 1: Array access is done with square brackets
Pin.Location = CountyLocation[index];
Pin.ToolTip = CoordinateTip;
BingMap.Children.Add(Pin);
}
}
}
关于c# - VB WPF 到 C# WPF,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34840836/