I am having difficulty getting the response text from a HTTP web request in vb.net when I get a web exception. This is the code I am doing it with. Try myWebResponse = CType(request.GetResponse(), HttpWebResponse) myStreamReader = New StreamReader(myWebResponse.GetResponseStream()) ResponseText = myStreamReader.ReadToEnd If myWebResponse.StatusC
当我收到web异常时，我无法从vb.net中的HTTP Web请求获取响应文本。 这是我正在做的代码。 Try myWebResponse = CType(request.GetResponse(), HttpWebResponse) myStreamReader = New StreamReader(myWebResponse.GetResponseStream()) ResponseText = myStreamReader.ReadToEnd If myWebResponse.StatusCode = HttpStatusCode.Accepted Or myWebResponse.StatusCode = 200
I have learned quite a bit browsing through Hidden Features of C# and was surprised when I couldn't find something similar for VB.NET. So what are some of its hidden or lesser known features? The Exception When clause is largely unknown. Consider this: Public Sub Login(host as string, user as String, password as string, _ Optional bRetry as Boolean = False)
我已经通过C＃的隐藏特性了解了相当多的浏览内容，并且当我无法找到类似于VB.NET的东西时感到惊讶。 那么它的一些隐藏或较少已知的功能是什么？ 子句时的Exception When很大程度上是未知的。 考虑这个： Public Sub Login(host as string, user as String, password as string, _ Optional bRetry as Boolean = False) Try ssh.Connect(host, user, password) Catch ex as TimeoutExceptio
This program has a "fl" variable that at a specific point, gets changed to file(0), the first line of the read file. I want to run some stuff when "fl" IS NOT EQUAL to "file(0)". I'm making this for the 1st of April. I'm not the best at this, so I figured to start this early. (CTRL + F for THIS_LINE if you want to find the line that I suppose doesn't
这个程序有一个“fl”变量，在特定点，变为文件（0），即读取文件的第一行。 我想在“fl”不等于“file（0）”时运行一些内容。 我在4月1日做这个。 我不是最好的，所以我想早点开始。 （如果你想找到我认为不行的行，则为CTRL + F为THIS_LINE。） Imports System Imports System.IO Imports System.Collections Public Class Form1 Private Property fl As String Private Sub Form1_Load(sender As Object, e As Even
I have this function which returns random numbers without repeating in same label divided by ",". How can I return all 6 values to 6 different labels? Public Class Tester Public ds As New DataSet Public strSQL As String Public cmd As New MySqlCommand Public dr As MySqlDataReader Dim intNumber As Integer Dim arrNumber(0 To 5) As Integer Dim i, x, y As In
我有这个函数返回随机数字，而不用重复的同一个标签除以“，”。 我如何将所有6个值返回到6个不同的标签？ Public Class Tester Public ds As New DataSet Public strSQL As String Public cmd As New MySqlCommand Public dr As MySqlDataReader Dim intNumber As Integer Dim arrNumber(0 To 5) As Integer Dim i, x, y As Integer Private Sub Button1_Click(ByVal sender As System.Obje
Does anyone here know how to integrate a progress bar while loading an xml data into a treeview in VB.Net? Most xml data I am loading can reach upto 30MB so the form freezes while the xml data is loaded or when the nodes are added in the treeview. Here is the code for creating the nodes in the treeview: Private Sub AddNodes(ByRef parent As TreeNodeCollection, ByVal root As XmlNode) For E
有没有人在这里知道如何在VB.Net中加载xml数据到treeview的时候集成一个进度条？ 我加载的大多数xml数据可以达到30MB，因此在加载xml数据时或者在树视图中添加节点时，表单冻结。 以下是在treeview中创建节点的代码： Private Sub AddNodes(ByRef parent As TreeNodeCollection, ByVal root As XmlNode) For Each child As XmlNode In root.ChildNodes Dim newNode As TreeNode = parent.Add(child.Name)
Forgive me if this is documented somewhere, but is there any nice way to create a MethodInvoker which will perform a specified function with specified arguments (capturing the argument values when the MethodInvoker is created)? I've sometimes done things by using a wrapper class, but wonder if that's the best approach. Should I be doing something like: Class Invoker(Of T) ReadOnly
原谅我，如果这是记录在某处，但是有没有什么好的方法来创建一个MethodInvoker，它将执行具有指定参数的指定函数（在创建MethodInvoker时捕获参数值）？ 我有时通过使用包装类来完成任务，但是不知道这是否是最好的方法。 我应该做些什么： Class Invoker(Of T) ReadOnly Param1 As T ReadOnly Act As Action(Of T) ReadOnly execDelegate As New MethodInvoker(AddressOf execProc) Private Sub New(ByVal p
I was just writing some quick code and noticed this complier error Using the iteration variable in a lambda expression may have unexpected results. Instead, create a local variable within the loop and assign it the value of the iteration variable. I know what it means and I can easily fix it, not a big deal. But I was wondering why it is a bad idea to use a iteration variable in a lambda?
我只是写了一些快速代码，并注意到这个编译器错误 在lambda表达式中使用迭代变量可能会产生意想不到的结果。 相反，在循环内创建一个局部变量并为其分配迭代变量的值。 我知道这意味着什么，我可以轻松修复它，而不是一件大事。 但我想知道为什么在lambda中使用迭代变量是一个坏主意？ 我以后可能会导致什么问题？ 考虑这个代码： List<Action> actions = new List<Action>(); for (int i = 0; i <
I am new to and struggling with the OpenXML SDK 2.5, I am trying to create an Excel file from a data table. I used the answer in this example to get started: Export DataTable to Excel with Open Xml SDK in c# It runs without error, but the resulting file is unreadable, says "Excel found unreadable content in 'TEST.xlsx.' Do you want to recover the contents of this workbook?"
我刚刚接触OpenXML SDK 2.5并且努力工作，我试图从数据表创建一个Excel文件。 我在这个例子中使用了答案开始： 使用c＃中的Open Xml SDK将DataTable导出到Excel 它运行时没有错误，但生成的文件不可读，“Excel发现'TEST.xlsx中的内容不可读。 你想恢复这本工作手册的内容吗？“ 在调试中，我在填充数据表后检查了数据表的内容，它具有预期数量的行以及预期的数据。 根据论坛上的一些阅读材料，我尝试将其导出到ZIP
Our company has a share point document server where the UNC looks something like this: \theserver.ourdomain.comrootdirectory Currently this drive is mapped to the Z: on my local computer. To access the Z: you have to specify (each time you login) credentials (in our case is it our username and password we logged on with) to access the folders and files in the rootdirectory . I am in a situat
我们公司有一个共享点文件服务器，UNC的外观如下所示：\ theserver.ourdomain.com rootdirectory 目前，该驱动器已映射到本地计算机上的Z：。 要访问Z：你必须指定（每次登录时）证书（在我们的例子是我们的用户名和密码登录，我们上）来访问文件夹和文件在rootdirectory。 我处于需要将文件复制到共享点服务器上的情况。 我希望能够在不使用映射网络驱动器的情况下将文件复制到服务器上（不必在路径中指定Z：）。 我如
What is the best way to make a class property "Write Once, Read Many" such that you can only set the property once? I know that I could pass all the properties in the constructor and make them ReadOnly, but in cases with a lot of properties I don't want a constructor that has 20+ arguments. Also, I realize I can "roll my own" setters, but having to do that for every pr
创建一个类属性“一次写入，多次读取”的最佳方式是什么，以便您只能设置属性一次？ 我知道我可以传递构造函数中的所有属性并使它们成为ReadOnly，但在具有很多属性的情况下，我不想要一个具有20多个参数的构造函数。 此外，我意识到我可以“推出我自己的”制定者，但必须为每个属性做这件事似乎是一堆冗余编码。 有没有一种干净的方式在VB 2008 .NET 3.5中做到这一点？ 一次写入属性永远不会“干净”。 我建议创建一个build