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VB WPF到C#WPF

converter xaml vb.net wpf c#

Gaudreau95 · 技术社区 · 9 年前

我正试图从使用VB WPF转到使用C#WPF,由于我拥有大量的代码,我目前尝试的是使用在线转换器。问题是,我在理解出现的一些错误时遇到了一些困难,作为C#的初学者,我有点迷茫。

下面的代码是我目前在标准VBWPF中使用的,工作非常好,是c#转换器将其更改为的代码的副本。(注意,我在VB和C#中都添加了Bing Maps WPF参考)

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

下面是将代码转换为c的示例#

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);



    }


}
}

我收到了3个错误,我想知道你能否告诉我它们的意思以及如何解决问题?

CountyLocation是一个变量,但用作方法?

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?

任何帮助都将非常感激,因为这对我来说是一个非常重要的外国领土。

1 回复 | 直到 9 年前

Kenneth 9 年前

请在线查看答案。主要问题是转换器已经转换了所有类型推断调用( Dim variable = ... )这是不正确的。你应该使用 var 用于类型推断。

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);
        }   
    }
}