String.Concat Method (Object)

Parameters

• arg0
  Type: System.Object
  The object to represent, or nulla null reference (Nothing in Visual Basic).

Return Value

Type: System.String
The string representation of the value of arg0, or String.Empty if arg0 is nulla null reference (Nothing in Visual Basic).

 _

Class Example

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Dim i As Integer = -123
      Dim o As [Object] = i
      Dim objs() As [Object] = {-123, -456, -789}

      outputBlock.Text += String.Format("Concatenate 1, 2, and 3 objects:") & vbCrLf
      outputBlock.Text += String.Format("1) {0}", [String].Concat(o)) & vbCrLf
      outputBlock.Text += String.Format("2) {0}", [String].Concat(o, o)) & vbCrLf
      outputBlock.Text += String.Format("3) {0}", [String].Concat(o, o, o)) & vbCrLf

      outputBlock.Text &= vbCrLf & "Concatenate 4 objects and a variable length parameter list:" & vbCrLf
      outputBlock.Text += String.Format("4) {0}", [String].Concat(o, o, o, o, o)) & vbCrLf

      outputBlock.Text &= vbCrLf & "Concatenate a 3 element object array:" & vbCrLf
      outputBlock.Text += String.Format("5) {0}", [String].Concat(objs)) & vbCrLf
   End Sub 'Main
End Class 'stringConcat5
'
'This example produces the following output:
'Concatenate 1, 2, and 3 objects:
'1) -123
'2) -123-123
'3) -123-123-123
'
'Concatenate 4 objects and a variable length parameter list:
'4) -123-123-123-123-123
'
'Concatenate a 3 element object array:
'5) -123-456-789
'

using System;

class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      int i = -123;
      Object o = i;
      Object[] objs = new Object[] { -123, -456, -789 };

      outputBlock.Text += String.Format("Concatenate 1, 2, and 3 objects:") + "\n";
      outputBlock.Text += String.Format("1) {0}", String.Concat(o)) + "\n";
      outputBlock.Text += String.Format("2) {0}", String.Concat(o, o)) + "\n";
      outputBlock.Text += String.Format("3) {0}", String.Concat(o, o, o)) + "\n";

      outputBlock.Text += "\nConcatenate 4 objects and a variable length parameter list:" + "\n";
      outputBlock.Text += String.Format("4) {0}", String.Concat(o, o, o, o, o)) + "\n";

      outputBlock.Text += "\nConcatenate a 3 element object array:" + "\n";
      outputBlock.Text += String.Format("5) {0}", String.Concat(objs)) + "\n";
   }
}
/*
This example produces the following output:
Concatenate 1, 2, and 3 objects:
1) -123
2) -123-123
3) -123-123-123

Concatenate 4 objects and a variable length parameter list:
4) -123-123-123-123-123

Concatenate a 3 element object array:
5) -123-456-789
*/