Public Function Contains ( _
    name As String _
) As Boolean

Dim instance As DataColumnCollection
Dim name As String
Dim returnValue As Boolean

returnValue = instance.Contains(name)

public bool Contains (
    string name
)

public:
bool Contains (
    String^ name
)

public boolean Contains (
    String name
)

public function Contains (
    name : String
) : boolean

Private Sub RemoveColumn(columnName As String, table As DataTable)
    Dim columns As DataColumnCollection = table.Columns

    If columns.Contains(columnName) Then 
        If columns.CanRemove(columns(columnName)) Then 
            columns.Remove(columnName)
        End If
    End If
End Sub

private void RemoveColumn(string columnName, DataTable table)
{
    DataColumnCollection columns = table.Columns;
 
    if (columns.Contains(columnName))
        if (columns.CanRemove(columns[columnName]))
            columns.Remove(columnName);
}