Check out the Fisher-Yates shuffle algorithm here: http://en.wikipedia.org/wiki/Knuth_shuffle with a more concise discussion by this site’s chief overlord here: http://www.codinghorror.com/blog/archives/001015.html There is a simple C# implementation in the blog entry that should be real easy to change to VB.NET
At the top of your .vb file: Imports System.data.sqlclient Within your code: ‘Setup SQL Command Dim CMD as new sqlCommand(“StoredProcedureName”) CMD.parameters(“@Parameter1”, sqlDBType.Int).value = Param_1_value Dim connection As New SqlConnection(connectionString) CMD.Connection = connection CMD.CommandType = CommandType.StoredProcedure Dim adapter As New SqlDataAdapter(CMD) adapter.SelectCommand.CommandTimeout = 300 ‘Fill the dataset Dim DS as DataSet adapter.Fill(ds) connection.Close() ‘Now, read through … Read more
Code in C# that produces list of combinations as arrays of k elements: public static class ListExtensions { public static IEnumerable<T[]> Combinations<T>(this IEnumerable<T> elements, int k) { List<T[]> result = new List<T[]>(); if (k == 0) { // single combination: empty set result.Add(new T[0]); } else { int current = 1; foreach (T element in … Read more
When you cast any non-zero number to a Boolean, it will evaluate to True. For instance: Dim value As Boolean = CBool(-1) ‘ True Dim value1 As Boolean = CBool(1) ‘ True Dim value2 As Boolean = CBool(0) ‘ False However, as you point out, any time you cast a Boolean that is set to … Read more
You won’t be able to capture the output from Shell. You will need to change this to a process and you will need to capture the the Standard Output (and possibly Error) streams from the process. Here is an example: Dim oProcess As New Process() Dim oStartInfo As New ProcessStartInfo(“ApplicationName.exe”, “arguments”) oStartInfo.UseShellExecute = False oStartInfo.RedirectStandardOutput … Read more
You can do this with the use of Ascii integers. Put this code in the Textbox’s Keypress event. e.KeyChar represents the key that’s pressed. And the the built-in function Asc() converts it into its Ascii integer. Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress ’97 – 122 = Ascii codes for … Read more
The correct way to escape double-quotes in VB is by doubling the double-quotes: <TestCase(“FirstNode”, “<node id=””FirstNode””>”)>
You will need to use some type of selector. The GetElementByID method works best because if the HTML file is formatted correctly then there should only be one element with that unique ID. The GetElementFromPoint will return an element based on the X,Y coordinate of the document, this is best used in the Document’s Click … Read more
The VB.NET compiler has the /langversion option for this. Also supported by MSBuild. But not by the IDE, that makes it awkward to change it. Still possible, you have to edit the .vbproj file. Use a text editor, Notepad will do. And copy/paste this snippet, insert it in the 4th line so it is effective … Read more
in case you need a version in C#: public static class LoggerExtensions { public static ILogger Here(this ILogger logger, [CallerMemberName] string memberName = “”, [CallerFilePath] string sourceFilePath = “”, [CallerLineNumber] int sourceLineNumber = 0) { return logger .ForContext(“MemberName”, memberName) .ForContext(“FilePath”, sourceFilePath) .ForContext(“LineNumber”, sourceLineNumber); } } use like this: // at the beginning of the class … Read more