Filling DataGrid from TextBox (VB, wpf)

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VB

WPF

Basically I have a datagrid of 6 columns.Also,on the same form I have 6 TextBox. When i fill all TextBox, i click on a Button "ADD"; then, all the textbox are loaded in the appropriate columns of my DataGrid.

In other words, I have a datagrid composed of:

COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6

Now,in another region of the same window(form)I have:

TextBox1TextBox2TextBox5TextBox4TextBox3TextBox6

I want that once all the TextBox are filled, each time that i press the button "ADD",all the contents of the textbox appear in the appropriate columns, ie

COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6

TextBox1TextBox2TextBox5TextBox4TextBox3TextBox6

TextBox4.1TextBox3.1TextBox2.1TextBox5.1TextBox1.1TextBox6.1

TextBox4.2TextBox3.2TextBox2.2TextBox5.2TextBox1.2TextBox6.2

The DataGrid should be fill always that i click the button"ADD"

Note: Is not a DataGridView, is DataGrid
Thanks,