VB to C# Functions

Question

Which are the equivalent of the following operators from VB.Net to C#?

• UBound()
• LBound()
• IsNothing()
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Answer 1

All these functions are member methods of the Microsoft.VisualBasic.Information class, in the Microsoft.VisualBasic assembly, so you can use them directly. However, most of them have C# equivalents, or non language specific equivalents in core .NET framework classes :

• UBound() : Array.GetUpperBound
• LBound() : Array.GetLowerBound
• IsNothing() : == null
• Chr() : (char)intValue (cast)
• Len() : String.Length
• UCase() : String.ToUpper
• LCase() : String.ToLower
• Left(), Right() and Mid() : String.Substring (with different arguments)
• RTrim() : String.TrimEnd
• LTrim() : String.TrimStart
• Trim() : String.Trim
• Replace() : String.Replace
• Split() : String.Split
• Join() : String.Join
• MsgBox() : MessageBox.Show
• IIF() : condition ? valueIfTrue : valueIfFalse (conditional operator)

Links

• Array members
• String members
• MessageBox.Show
• conditional operator

Answer 2

• UBound() -> if x is an array of string[] for example: x.GetUpperBound();
• LBound() -> if x is an array of string[] for example: x.GetLowerBound();
• IsNothing() -> if (x == null)
• Chr() -> char x = (char)65;
• Len() -> x.Length();
• UCase() -> assume x is a string: x.ToUpper();
• LCase() -> assume x is a string: x.ToLower();
• Left() -> assume x is a string: x.Substring(0, 10); // first 10 characters
• Right() -> assume x is a string: x.Substring(x.Length - 10); // last 10 characters
• RTrim() -> x.TrimEnd();
• LTrim() -> x.TrimStart();
• Trim() -> x.Trim();
• Mid() -> assume x is a string: x.Substring()
• Replace() -> assume x is a string: x.Replace();
• Split() -> assume x is a string: x.Split();
• Join() -> String.Join();
• MsgBox() -> MessageBox.Show();
• IIF() -> ternary operator (x == true ? true-value : false-value);