在窗体上使用WebBrowser并使用window.external从Javascript调用C#.传入函数中的Javascript数组类:
var x = [];
x.push(classa);
x.push(classa);
window.external.CSharpFunction(x);
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我可以在C#中成功获取x.length:
int length=(int)x.GetType().InvokeMember("length", BindingFlags.GetProperty, null, x, null);
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我的问题是如何获得x [0]和x [1]?我试过了
x.GetType().InvokeMember(string.Empty, BindingFlags.GetProperty, null, x, new object[1]{1});
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和
x.GetType().InvokeMember(string.Empty, BindingFlags.InvokeMethod | BindingFlags.Default, null, x, new object[1]{0});
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这两个都触发了WebBrowser控件中的错误.
谢谢
我正在尝试在C#中进行一些图像处理.我想使用一些线程在我的图像中的几个区域上进行并行计算.线程实际上是在Bitmap对象中获取和设置像素.2个线程绝对没有机会访问同一个像素,所以这不是问题所在.
问题是C#不允许我在同一个Bitmap对象上启动多个线程,即使我确定不会同时读取和修改相同的像素.
有没有办法避免C#引发此错误?或者只是不可能在我的Bitmap对象上运行多个线程?
谢谢,
皮埃尔 - 奥利维尔
我正在使用GDAL库.目前,我可以接受左上角和右上角,并从原始图像中切出图像.我现在要做的是,接受两个WKT点并转换为X,Y坐标来做同样的事情.我只是想知道如果我知道GeoTransform及它使用的坐标系统(WGS84)是否可以这样做?
我有一个 android.net.Uri 指向我需要确定文件大小的文件。目前这是使用 contentResolver 上的查询完成的(我使用的是 Xamarin,所以它是 C#):
var cursor = contentResolver.Query(uri, new string[] {
Android.Provider.OpenableColumns.Size,
Android.Provider.OpenableColumns.DisplayName
}, null, null, null);
cursor.MoveToFirst();
size = cursor.GetLong(0);
fileName = cursor.GetString(1);
cursor.Close();
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这在大多数情况下都有效,但对于某些文件,该值似乎比正确的文件大小略大(我使用 Total Commander 作为参考)。

必须有更好的方法来做到这一点,我真的需要确切的大小信息,并且由于文件非常大,无法先将它们读入内存。为什么我的方法会产生错误的结果?
在此先感谢您的帮助。
我发现如果我从网站上复制C#代码并将其粘贴到Notepad ++中,它看起来很难看.基本上它都在一条线上.是否有某个网站,或Notepad ++的加载项,将采取类似1长串的C#代码,然后正确缩进代码?
我估计我可以这样做:
Dictionary<string, <Dictionary<int, int>> targetChapterAdjustments = new Dictionary<string, <Dictionary<int, int>>();
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(创建一个将Dictionary作为其"定义"成员的字典).
但到底能走多远 - 有限制或实际限制吗?
我可以有这样的字典:
Dictionary<string, <Dictionary<int, Dictionary<string, <Dictionary<int, Dictionary<bool, <Dictionary<float, Dictionary<string, <Dictionary<int>>>>>>>>>>>>
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...例如?
我会喜欢/讨厌看到这样一个类的创作看起来如何.
好吧,LineBacker跟我说说了 我试过了,但是这个:
Dictionary<string, <Dictionary<int, Dictionary<string, <Dictionary<int, Dictionary<bool, <Dictionary<float, Dictionary<string, <Dictionary<int>>>>>>>>>>>> funWithDictionaries =
new Dictionary<string, <Dictionary<int, Dictionary<string, <Dictionary<int, Dictionary<bool, <Dictionary<float, Dictionary<string, <Dictionary<int>>>>>>>>>>>>();
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...因多个语法错误而失败.
由LB编辑(对不起评论太大了)
这段代码编译.足够你的情况?
var dict = new Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary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nary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,Dictionary<string,string>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>();
Run Code Online (Sandbox Code Playgroud) 我需要为IOS找到以下代码的等效项。
byte[] encodedMess;
using (var stream = new MemoryStream())
{
using (var writer = new BinaryWriter(stream))
{
writer.Write(message.getType().ToString();
writer.Write(message.toJSONString());
}
encodedMess = stream.ToArray();
}
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我已经尝试了一些技巧并在互联网上找到短裤代码,但没有任何效果:(
你是我最后的机会......我必须有一个像encodedMess这样的字节数组......
感谢每一个帮助(对不起,我的英语不好)
我有像这样的xml文档:
<?xml version="1.0" encoding="utf-8" ?>
<demographics>
<country id="1" value="USA">
<state id ="1" value="California">
<city>Long Beach</city>
<city>Los Angeles</city>
<city>San Diego</city>
</state>
<state id ="2" value="Arizona">
<city>Tucson</city>
<city>Phoenix</city>
<city>Tempe</city>
</state>
</country>
<country id="2" value="Mexico">
<state id ="1" value="Baja California">
<city>Tijuana</city>
<city>Rosarito</city>
</state>
</country>
</demographics>
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如何使用XML linq查询从人口统计信息节点开始选择所有内容,如下所示:
var node=from c in xmldocument.Descendants("demographics") ??
Run Code Online (Sandbox Code Playgroud) 我有一个看起来像这样的文本文件
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 …Run Code Online (Sandbox Code Playgroud)