DataTable.Columns Property
Important
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Gets the collection of columns that belong to this table.
public:
property System::Data::DataColumnCollection ^ Columns { System::Data::DataColumnCollection ^ get(); };
public System.Data.DataColumnCollection Columns { get; }
[System.Data.DataSysDescription("DataTableColumnsDescr")]
public System.Data.DataColumnCollection Columns { get; }
member this.Columns : System.Data.DataColumnCollection
[<System.Data.DataSysDescription("DataTableColumnsDescr")>]
member this.Columns : System.Data.DataColumnCollection
Public ReadOnly Property Columns As DataColumnCollection
A DataColumnCollection that contains the collection of DataColumn objects for the table. An empty collection is returned if no DataColumn objects exist.
- Attributes
The following example prints each value of each row in a table using the Columns property.
private void PrintValues(DataTable table)
{
foreach(DataRow row in table.Rows)
{
foreach(DataColumn column in table.Columns)
{
Console.WriteLine(row[column]);
}
}
}
Private Sub PrintValues(ByVal table As DataTable)
Dim row As DataRow
Dim column As DataColumn
For Each row in table.Rows
For Each column In table.Columns
Console.WriteLine(row(column))
Next
Next
End Sub
The DataColumnCollection determines the schema of a table by defining the data type of each column.
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
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