Riempire datatable tramite datarow

[Dario the best]

Salve, posto di seguito il codice col quale tento di riempire un DataTable. Mi va in errore:

Dim DtItem As New DataTable
DtItem.Columns.Add("IDRullo")
DtItem.Columns.Add("IDRiga")
DtItem.Columns.Add("IDItem")
DtItem.Columns.Add("Qu")


Dim DrItem As DataRow
Dim DrItem As DataRow
DtItem.NewRow()
DrItem("IDRullo") = 1
DrItem("IDRiga") = 2
DrItem("IDItem") = 3
DrItem("Qu") = 7
DtItem.Rows.Add(DrItem)

Mi esce il seguente errore: Object reference not set to an instance of an object.

[djciko]

C#

DataTable table = new DataTable();

DataColumn col1 = new DataColumn("ID");
DataColumn col2 = new DataColumn("Name");
DataColumn col3 = new DataColumn("Checked");


col1.DataType = System.Type.GetType("System.Int");
col2.DataType = System.Type.GetType("System.String");
col3.DataType = System.Type.GetType("System.Boolean");

table.Columns.Add(col1);
table.Columns.Add(col2);
table.Columns.Add(col3);

DataRow row = table.NewRow(); // << E' qui che sbagli
row[col1] = 1100;
row[col2] = "Computer Set";
row[col3] = true;

table.Rows.Add(row);

[djciko]

VB.Net

Dim table As New DataTable()

Dim col1 As New DataColumn("ID")
Dim col2 As New DataColumn("Name")
Dim col3 As New DataColumn("Checked")

col1.DataType = System.Type.[GetType]("System.Int")
col2.DataType = System.Type.[GetType]("System.String")
col3.DataType = System.Type.[GetType]("System.Boolean")

table.Columns.Add(col1)
table.Columns.Add(col2)
table.Columns.Add(col3)

Dim row As DataRow = table.NewRow() ' << E' qui che sbagli
row(col1) = 1100
row(col2) = "Computer Set"
row(col3) = True


table.Rows.Add(row)