Detecting Enter keypress on VB.NET
In the KeyDown Event: If e.KeyCode = Keys.Enter Then Messagebox.Show(“Enter key pressed”) end if
vb.net
How can I delete an item from an array in VB.NET?
As Heinzi said, an array has a fixed size. In order to ‘remove an item’ or ‘resize’ it, you’ll have to create a new array with the desired size and copy the items you need as appropriate. Here’s code to remove an item from an array: <System.Runtime.CompilerServices.Extension()> _ Function RemoveAt(Of T)(ByVal arr As T(), ByVal … Read more
Get the Integer value of an enumeration which is a generic
I was going to use a cool piece of reflection code but just a simple Convert.ToInt32 works great… Forgive my VB I’m a C# guy Public Function GetEnumInt(Of T)(enumVal As T) As Integer Return Convert.ToInt32(enumVal) End Function
VB.NET Function Return
The difference is that they DO DIFFERENT THINGS! ‘Return value’ does 2 things: 1. It sets the function return value at that point 2. It immediately exits the function No further code in the function executes! ‘Functionname = value’ does 1 thing: 1. It sets the function return value at that point Other code in … Read more
New line character in VB.Net?
Check out Environment.NewLine. As for web pages, break lines with <br> or <p></p> tags.
x=x+1 vs. x +=1
From the MSDN library for +=: Using this operator is almost the same as specifying result = result + expression, except that result is only evaluated once. So they are not identical and that is why x += 1 will be more efficient. Update: I just noticed that my MSDN Library link was to the … Read more
Why does a VB.Net function that returns string only actually return a single character?
Note: this answer was originally written by the OP, Kibbee, as a self-answer. However, it was written in the body of the question, not as an actual separate answer. Since the OP has refused repeated requests by other users, including a moderator, to repost in accordance with site rules, I’m reposting it myself. After trying … Read more
how to add new rows into a datatable vb.net
Here is an example of adding a new row to a datatable that uses AutoIncrement on the first column: Define the table structure: Dim dt As New DataTable dt.Columns.Add(“ID”) dt.Columns.Add(“Name”) dt.Columns(0).AutoIncrement = True Add a New row: Dim R As DataRow = dt.NewRow R(“Name”) = txtName.Text dt.Rows.Add(R) DataGridView1.DataSource = dt
Nullable Types in VB.NET?
VB.Net does have nullable types, they can be declared in the following two different ways. Dim iNullable As Integer? or Dim iNullable As Nullable(Of Integer)
Why is it not necessary to indicate ByVal/ByRef anymore?
It seems that this post covers your question: http://msmvps.com/blogs/carlosq/archive/2011/03/15/vs-2010-sp1-changing-quot-byval-quot-vb-net-code-editor-experience.aspx So no, there is no way to get the old behaviour. From now on ByVal is the default (what it was before) and it won’t get added automatically to the method parameters. In my opinion this is a good decision since it’s making VB.NET a bit … Read more